Publication 510 (6/2006), Excise Taxes for 2006

2. Fuel Tax Credits and Refunds

Table of Contents

Federal excise taxes are imposed on certain fuels as discussed in Chapter 1. This chapter lists the nontaxable uses of each fuel and defines the nontaxable uses. Information on the refund of second tax is included. This chapter also explains credits and refunds for the alcohol fuel mixture credit, the biodiesel mixture credit, the alcohol fuel credit, the biodiesel fuel credit, the renewable diesel credits, and the alternative fuel credits.

Information on how to make a claim for credit or refund is included in this chapter and can also can be found in the instructions for the following forms.

Form 720.
Form 4136.
Form 8849.
Form 6478.
Form 8864.

Exported taxable fuel. The claim rates for exported taxable fuel are listed on Form 720 (Schedule C), Form 8849 (Schedule 1), and Form 4136. Taxpayers making a claim for exported taxable fuel must include with their records proof of exportation. Proof of exportation includes:

A copy of the export bill of lading issued by the delivering carrier,
A certificate by the agent or representative of the export carrier showing actual exportation of the fuel,
A certificate of lading signed by a customs officer of the foreign country to which the fuel is exported, or
A statement of the foreign consignee showing receipt of the fuel.

Gasoline and Aviation Gasoline

Ultimate Purchasers

The following are the uses of gasoline (defined earlier) for which a credit or refund may be allowable to an ultimate purchaser.

On a farm for farming purposes (credit only).
Off-highway business use.
Export.
In a boat engaged in commercial fishing.
In certain intercity and local buses.
In a school bus.
In a highway vehicle owned by the United States that is not used on a highway.
Exclusive use by a nonprofit educational organization (see sales by registered ultimate vendors and registered credit card issuers later).
Exclusive use by a state, political subdivision of a state, or the District of Columbia (see sales by registered ultimate vendors and registered credit card issuers later).
In an aircraft or vehicle owned by an aircraft museum.

The following are the uses of aviation gasoline for which a credit or refund may be allowable to an ultimate purchaser.

On a farm for farming purposes (credit only).
Export.
In foreign trade.
Certain helicopter and fixed-wing air ambulance uses.
In commercial aviation (other than foreign trade).
Exclusive use by a nonprofit education organization (see sales by registered ultimate vendors and registered credit card issuers later).
Exclusive use by a state, political subdivision of a state, or the District of Columbia (see sales by registered ultimate vendors and registered credit card issuers later).
In an aircraft owned by an aircraft museum.
In military aircraft.

Claims by persons who paid the tax to the government. Except for sales to nonprofit educational organizations and states and local governments, a credit or refund is allowable to the person that paid the tax to the government if the gasoline was sold to the ultimate purchaser (including an exporter) by either that person or by a retailer for a purpose listed above.

Sales by Registered Ultimate Vendors

This is an ultimate vendor that sells gasoline or aviation gasoline to any of the following and that is purchased without the use of a credit card.

A state or local government for its exclusive use (including essential government use by an Indian tribal government).
A nonprofit educational organization for its exclusive use.

The registered ultimate vendor may make the claim if the ultimate purchaser waives its right to the credit or refund by providing the registered ultimate vendor with a certificate. A sample certificate is included as Model Certificate M in the Appendix. The registered ultimate vendor must have the certificate at the time the credit or refund is claimed.

The ultimate vendor must be registered by the IRS. See Registration Requirements earlier.

Credit Card Purchases

If gasoline and aviation gasoline are purchased with a credit card issued to a state or local government for its exclusive use (including essential government use by an Indian tribal government), or a nonprofit educational organization for its exclusive use, the person who extended credit to the ultimate purchaser (the credit card issuer) is treated as the person that paid the tax and makes the claim if the following conditions are met:

Is registered by the IRS,
Has established that the amount of tax has not been collected from the person who purchased the gasoline or has obtained written consent from the ultimate purchaser to the allowance of the credit or refund, and
Has repaid or agreed to repay the amount of the tax to the ultimate vendor, has obtained the written consent of the ultimate vendor to the allowance of the credit or refund, or has made arrangements which provides the ultimate vendor with reimbursement of the tax.

If the requirements above are not met by the credit card issuer, the credit card issuer must collect the tax from the ultimate purchaser and only the ultimate purchaser may make the claim.

How to make the claim. If the claim is made by the credit card issuer, see Schedule C
(Form 720) or Schedule 8 (Form 8849).

If the claim is made by the ultimate purchaser, see Ultimate Purchasers earlier.

Undyed Diesel Fuel and Undyed Kerosene (Other Than Kerosene Used in Aviation)

For conditions to an allowance of a credit or refund on exported dyed diesel fuel and dyed kerosene, see Exported taxable fuel above.

Ultimate Purchasers

The following are nontaxable uses of diesel fuel and kerosene (defined earlier) for which a credit or refund may be allowable to an ultimate purchaser.

On a farm for farming purposes.
Off-highway business use.
Export.
In a qualified local bus.
In a school bus.
Other than as a fuel in a propulsion engine of a diesel-powered highway vehicle (such as home heating oil).
In a highway vehicle owned by the United States that is not used on a highway.
Exclusive use by a nonprofit educational organization (see sales by registered ultimate vendors and registered credit card issuers later).
Exclusive use by a state, political subdivision of a state, or the District of Columbia (see sales by registered ultimate vendors and registered credit card issuers later).
In a vehicle owned by an aircraft museum.
As a fuel in a propulsion engine of a diesel-powered train (subject to back-up tax, discussed earlier).

Sales by Registered Ultimate Vendors

The following are the sales for which a credit or refund may be allowable to the registered ultimate vendor only.

Undyed diesel fuel or undyed kerosene sold for the exclusive use by a state or local government (if credit card rules (defined below) do not apply),
Undyed kerosene sold from a blocked pump (defined below), or
Undyed diesel fuel or undyed kerosene used in certain intercity and local buses, only if the ultimate purchaser waives its right to the credit or refund by providing the registered ultimate vendor with a waiver.

Registered ultimate vendor (state use). This is a person that sells undyed diesel fuel or undyed kerosene to a state or local government for its exclusive use (including essential government use by an Indian tribal government). The diesel fuel or kerosene must be purchased by the state without the use of a credit card, issued to the state by the credit card issuer, in order for the ultimate vendor to make the claim. The ultimate vendor must be registered by the IRS. See Registration Requirements earlier.

Registered ultimate vendor (blocked pump). This is an ultimate vendor that sells undyed kerosene from a blocked pump.

A credit or refund may be allowable to a registered ultimate vendor (blocked pump) if the vendor sold to a buyer undyed kerosene from a blocked pump for use other than as a fuel in a diesel-powered highway vehicle and the vendor had no reason to believe the kerosene would not be used in that manner.

Blocked pump. A blocked pump is a fuel pump that meets all the following requirements.

It is used to make retail sales of undyed kerosene for use by the buyer in any nontaxable use.
It is at a fixed location.
It is identified with a legible and conspicuous notice stating, “UNDYED UNTAXED KEROSENE, NONTAXABLE USE ONLY.”
It meets either of the following conditions.
1. It cannot reasonably be used to dispense fuel directly into the fuel supply tank of a diesel-powered highway vehicle or train.
2. It is locked by the vendor after each sale and unlocked by the vendor only in response to a buyer's request for undyed kerosene for use other than as a fuel in a diesel-powered highway vehicle or train.

Registered ultimate vendor (certain intercity and local buses). This is an ultimate vendor that sells undyed diesel fuel or undyed kerosene to the ultimate purchaser for use in certain intercity and local buses.

The registered ultimate vendor may make the claim if the ultimate purchaser waives its right to the credit or refund by providing the registered ultimate vendor with a waiver. A sample waiver is included as Model Waiver N in the Appendix. The registered ultimate vendor must have the waiver at the time the credit or payment is claimed.

Credit Card Purchases

If undyed diesel fuel or kerosene is purchased with a credit card issued to a state, the person who extended credit to the state (the credit card issuer) is treated as the person that paid the tax and makes the claim if the following conditions are met:

Is registered by the IRS.
Has established that the amount of tax has not been collected from the person who purchased the diesel fuel or kerosene, or has obtained written consent from the ultimate purchaser to the allowance of the credit or refund, and
Has repaid or agreed to repay the amount of the tax to the ultimate vendor, has obtained the written consent of the ultimate vendor to the allowance of the credit or refund, or has made arrangements which provides the ultimate vendor with reimbursement of the tax.

If the requirements above are not met by the credit card issuer, the credit card issuer must collect the tax from the ultimate purchaser and only the ultimate purchaser may make the claim.

Diesel-Water Fuel Emulsion

Beginning January 1, 2006, a claim for credit or refund may be made for the nontaxable use of a diesel-water fuel emulsion and for undyed diesel fuel used to produce a diesel-water fuel emulsion. The claim rate for nontaxable use of a diesel-water fuel emulsion taxed at $.198 per gallon is $.197 (if exported, the claim rate is $.198). The following are the nontaxable uses for a diesel-water fuel emulsion for which a credit or refund may be allowable to an ultimate purchaser:

On a farm for farming purposes.
Off-highway business use.
Export.
In a qualified local bus.
In a school bus.
Other than as fuel in the propulsion engine of a train or diesel-powered highway vehicle (but not off-highway use).
In a highway vehicle owned by the United States that is not used on a highway.
Exclusive use by a nonprofit educational organization.
Exclusive use by a state, political subdivision of a state, or the District of Columbia.
In an aircraft or vehicle owned by an aircraft museum.

Blender claims. The claim rate for undyed diesel fuel taxed at $.244 and used to produce a diesel-water fuel emulsion is $.046 per gallon of diesel fuel so used. The blender must be registered by the IRS in order to make the claim. The blender must attach a statement to the claim certifying all of the following:

That the diesel-water fuel emulsion contains at least 14 percent water,
That the emulsion additive is registered by a United States manufacturer under section 211 of the Clean Air Act with the Environmental Protection Agency,
That undyed diesel fuel taxed at $.244 was used to produce the diesel-water fuel emulsion, and
That the diesel-water fuel emulsion was used or sold for use in the blender's trade or business.

Kerosene For Use in Aviation

Kerosene For Use in Commercial Aviation

The ultimate purchaser of the kerosene used in commercial aviation (other than foreign trade) is eligible to make a claim if the ultimate purchaser certifies that the right to make the claim has not been waived. Generally, the ultimate purchaser is the aircraft operator.

The registered ultimate vendor of kerosene for use in commercial aviation (other than foreign trade ) may make this claim if the ultimate purchaser waives its right to the credit or payment by providing the registered ultimate vendor with a waiver. A sample waiver is included as Model Waiver L in the Appendix. The registered ultimate vendor must have the waiver at the time the credit or payment is claimed.

For the definition of commercial aviation, see Commercial aviation on page 11.

Kerosene for use partly in commercial aviation and partly in noncommercial aviation If the fuel is used partly for use in commercial aviation and partly for use in noncommercial aviation, the operator may identify, either at the time of purchase or after the kerosene has been used, the amount that will be (or has been) used in commercial aviation. At the same time, the operator would either claim or waive the right to or make the claim for credit or refund of the kerosene for use in commercial aviation.

If the operator does not identify the amount of kerosene that will be (or has been) used in commercial aviation, the operator may provide a certificate to the ultimate vendor similar to Model Certificate Q in the Appendix. Check box 7, “for a nonexempt use in noncommercial aviation” on the certificate. For kerosene purchased with the certificate, used in commercial aviation, and taxed at $.244 per gallon, use of the certificate will be treated as a waiver of the right to claim a credit or refund for the $.025 per gallon part of the tax. The ultimate vendor may make this claim. The operator may make a claim for the $.175 per gallon of the kerosene, but cannot waive the right to make the claim for the $.175 per gallon.

Sales by Registered Ultimate Vendors

For information on claims by registered ultimate vendors for kerosene used in commercial aviation, see Kerosene For Use in Commercial Aviation, above.

Kerosene for use in noncommercial aviation or foreign trade

Only the registered ultimate vendor may claim a credit or payment for sales of kerosene for use in foreign trade or use (other than by a state or local government) in noncommercial aviation. The ultimate vendor must be registered by the IRS (activity letter UA) and have the required certificate from the ultimate purchaser. A sample certificate is included as Model Certificate Q in the Appendix. The registered ultimate vendor must have the certificate at the time the credit or payment is claimed.

Noncommercial aviation means any use of an aircraft not described as commercial aviation. See the definition of commercial aviation earlier.

The following are the uses of kerosene for which a claim may be allowable to the ultimate vendor:

On a farm for farming purposes.
In foreign trade.
Certain helicopter and fixed-wing ambulance uses.
Exclusive use by a nonprofit education organization.
In an aircraft or vehicle owned by an aircraft museum.
In military aircraft.
In nonexempt noncommercial aviation.

Kerosene for use in aviation by a state or local government

Only the registered ultimate vendor may claim a credit or payment for sales of kerosene for use in aviation to a state or local government for its exclusive use (including essential government use by an Indian tribal government). The kerosene for use in aviation must be purchased by the state without the use of a credit card in order for the ultimate vendor to make the claim. The ultimate vendor must be registered by the IRS (activity letter UV) and have the required certificate from the ultimate purchaser. A sample certificate is included as Model Certificate Q in the Appendix. The registered ultimate vendor must have the certificate at the time the credit or payment is claimed.

Credit Card Purchases

If taxed kerosene for use in aviation is purchased with a credit card issued to a state, the person who extended credit to the state (the credit card issuer) is treated as the person that paid the tax and makes the claim if the following conditions are met:

Is registered by the IRS,
Has established that the amount of tax has not been collected from the person who purchased the kerosene, or has obtained written consent from the ultimate purchaser to the allowance of the credit or refund, and
Has repaid or agreed to repay the amount of the tax to the ultimate vendor, has obtained the written consent of the ultimate vendor to the allowance of the credit or refund, or has made arrangements which provides the ultimate vendor with reimbursement of the tax.

If the requirements above are not met by the credit card issuer, the credit card issuer must collect the tax from the ultimate purchaser and only the ultimate purchaser may make the claim.

Special Motor Fuel/Alternative Fuel

The following are the uses of taxed special motor fuel (including LPG) for which a credit or refund may be allowable to an ultimate purchaser. While tax is generally imposed on delivery, special motor fuels is taxed prior to delivery in the case of certain bulk sales described in Chapter 1. Credits or refunds for nontaxable uses of alternative fuels are effective after September 30, 2006. See Alternative Fuel Credits later.

On a farm for farming purposes.
Off-highway business use.
In a boat engaged in commercial fishing.
In certain intercity and local buses.
In a school bus.
In a qualified local bus.
Exclusive use by a nonprofit educational organization.
Exclusive use by a state, political subdivision of a state, or the District of Columbia.
In an aircraft or vehicle owned by an aircraft museum.
Use in any boat operated by the United States for its exclusive use or any vessel of war of any foreign nation.

Compressed Natural Gas (CNG)

The following are the uses of taxed CNG for which a credit or refund may be allowable to an ultimate purchaser.

On a farm for farming purposes.
In an off-highway business use.
In a boat engaged in commercial fishing.
In certain intercity and local buses.
In a school bus.
In a qualified local bus.
Exclusive use by a nonprofit educational organization.
Exclusive use by a state, political subdivision of a state, or the District of Columbia.
Use in a vehicle owned by an aircraft museum.
Use in any boat operated by the United States for its exclusive use or any vessel of war of any foreign nation.

Refunds of Second Tax

The tax on dyed diesel fuel used in trains and inland waterways fuel use applies at the rate listed on Form 720. This is in addition to all other taxes imposed on the sale or use of the fuel. The section 4081(e) refund (discussed below) cannot be claimed.

If the tax is paid and reported to the government on more than one taxable event for a taxable fuel under Internal Revenue Code section 4081, the person paying the “second tax” may claim a refund (without interest) of that tax if certain conditions and reporting requirements are met. No credit against any tax is allowed for this tax. For information about taxable events, see the discussions under Gasoline, Diesel Fuel and Kerosene, and Kerosene For Use in Aviation earlier.

Conditions to allowance of refund. A claim for refund of the tax is allowed only if all the following conditions are met.

A tax on the fuel was paid to the government and not credited or refunded (the “first tax”).
After the first tax was imposed, another tax was imposed on the same fuel and was paid to the government (the “second tax”).
The person that paid the second tax filed a timely claim for refund containing the information required (see Refund claim, later).
The person that paid the first tax has met the reporting requirements, discussed next.

Reporting requirements. Generally, the person that paid the first tax must file a “First Taxpayer's Report” with its Form 720 for the quarter to which the report relates. A model first taxpayer's report is shown in the Appendix as Model Certificate B. The report must contain all information needed to complete the model.

By the due date for filing the Form 720, you must also send a separate copy of the report to the following address.

Internal Revenue Service Center
Cincinnati, OH 45999-0555

Write “EXCISE - FIRST TAXPAYER'S REPORT” across the top of that copy.

Optional reporting. A first taxpayer's report is not required for the tax imposed on any of the following taxable events.

Removal at a terminal rack.
Nonbulk entries into the United States.
Removals or sales by blenders.

However, if the person liable for the tax expects that another tax will be imposed on that fuel, that person should (but is not required to) file a first taxpayer's report.

Providing information. The first taxpayer must give a copy of the report to the buyer of the fuel within the bulk transfer/terminal system or to the owner of the fuel immediately before the first tax was imposed, if the first taxpayer is not the owner at that time. If an optional report is filed, a copy should (but is not required to) be given to the buyer or owner.

A person that receives a copy of the first taxpayer's report and later sells the fuel within the bulk transfer/terminal system must give the copy and a “Statement of Subsequent Seller” to the buyer. If the later sale is outside the bulk transfer/terminal system and that person expects that another tax will be imposed, that person should (but is not required to) give the copy and the statement to the buyer. A model statement of subsequent seller is shown in the Appendix as Model Certificate A. The statement must contain all information necessary to complete the model.

If the first taxpayer's report relates to fuel sold to more than one buyer, copies of that report must be made when the fuel is divided. Each buyer must be given a copy of the report.

Refund claim. You must have filed Form 720 and paid the second tax before you file for a refund of that tax. You must make your claim for refund on Form 8849. Complete Schedule 5 (Form 8849) and attach it to your Form 8849. Do not include this claim with a claim under another tax provision. You must not have included the second tax in the price of the fuel and must not have collected it from the purchaser. You must submit the following information with your claim.

A copy of the first taxpayer's report (discussed earlier).
A copy of the statement of subsequent seller if the fuel was bought from someone other than the first taxpayer.

Definitions of Nontaxable Uses

This section provides definitions of the terms used in Table 2-1 for nontaxable uses. If applicable, the type of use number from Table 2-1 is indicated in each heading.

Type of use table. The first column of the table is the number you enter on Form 4136, Form 8849, or Schedule C (Form 720) for that type of use. For type of use 2, the mobile machinery parenthetical applies only to Form 8849 and Form 720.

Table 2-1. Type of Use Table

No.	Type of Use
1	On a farm for farming purposes
2	Off-highway business use (for business use other than in a highway vehicle registered or required to be registered for highway use) (other than use in mobile machinery)
3	Export
4	In a boat engaged in commercial fishing
5	In certain intercity and local buses
6	For diesel fuel or kerosene in a qualified local bus
7	In a bus transporting students and employees of schools (school buses)
8	For diesel fuel and kerosene (other than kerosene used in aviation) used other than as a fuel in the propulsion engine of a train or diesel-powered highway vehicle (but not off-highway business use)
9	In foreign trade
10	Certain helicopter and fixed-wing aircraft uses
11	Not applicable
12	In a highway vehicle owned by the United States that is not used on a highway
13	Exclusive use by a nonprofit educational organization
14	Exclusive use by a state, political subdivision of a state, or the District of Columbia
15	In an aircraft or vehicle owned by an aircraft museum
16	In military aircraft
17	For use in the production of special motor fuels/alternative fuels

On a Farm for Farming Purposes (No. 1)

On a farm for farming purposes means fuel used in carrying on a trade or business of farming, on a farm in the United States, and for farming purposes.

Farm. A farm includes livestock, dairy, fish, poultry, fruit, fur-bearing animals, and truck farms, orchards, plantations, ranches, nurseries, ranges, and feed yards for fattening cattle. It also includes structures such as greenhouses used primarily for the raising of agricultural or horticultural commodities. A fish farm is an area where fish are grown or
raised — not merely caught or harvested.

Farming purposes. As an owner, tenant, or operator, you use fuel on a farm for farming purposes if you use it in any of the following ways.

To cultivate the soil or to raise or harvest any agricultural or horticultural commodity.
To raise, shear, feed, care for, train, or manage livestock, bees, poultry, fur-bearing animals, or wildlife.
To operate, manage, conserve, improve, or maintain your farm and its tools and equipment.
To handle, dry, pack, grade, or store any raw agricultural or horticultural commodity. For this use to qualify, you must have produced more than half the commodity so treated during the tax year. Commodity means a single raw product. For example, apples and peaches are two separate commodities.
To plant, cultivate, care for, or cut trees or to prepare (other than sawing logs into lumber, chipping, or other milling) trees for market, but only if the planting, etc., is incidental to your farming operations. Your tree operations will be incidental only if they are minor in nature when compared to the total farming operations.

If any other person, such as a neighbor or custom operator, performs a service for you on your farm for any of the purposes listed in (1) or (2), you are considered to be the ultimate purchaser that used the fuel on a farm for farming purposes. However, see Custom application of fertilizer and pesticide, next.

If doubt exists whether the owner, the tenant, or the operator of the farm bought the fuel, determine who bore the cost of the fuel. For example, if the owner of a farm and the tenant equally share the cost of gasoline that is used on a farm for farming purposes, each can claim a credit for the tax on one-half the fuel used.

Custom application of fertilizer and pesticide. Fuel used on a farm for farming purposes includes fuel used in the application of fertilizer, pesticides, or other substances, including aerial applications. Generally, the applicator is treated as having used the fuel on a farm for farming purposes. Effective after September 20, 2005, the aerial applicator waiver is no longer required to be provided by the farmer. For aviation gasoline, the aerial applicator makes the claim as the ultimate purchaser. For kerosene used in aviation, the registered ultimate vendor makes the claim.

Fuel used between airfield and farm. Fuel used by an aerial applicator for the direct flight between the airfield and one or more farms is treated as a farming purpose.

Fuel not used for farming. Fuel is not used on a farm for farming purposes if it is used in any of the following ways.

Off the farm, such as on the highway or in noncommercial aviation, other than fuel used between the airfield and farm described above, even if the fuel is used in transporting livestock, feed, crops, or equipment.
For personal use, such as mowing the lawn.
In processing, packaging, freezing, or canning operations.
In processing crude gum into gum spirits of turpentine or gum resin or in processing maple sap into maple syrup or maple sugar.

Off-Highway Business Use (No. 2)

Off-highway business use means fuel used in a trade or business or in an income-producing activity other than as a fuel in a highway vehicle registered or required to be registered for use on public highways. The terms , “highway vehicle”, “public highway”, and “registered” are defined below. Do not consider any use in a boat as an off-highway business use.

Off-highway business use includes fuels used in any of the following ways.

In stationary machines such as generators, compressors, power saws, and similar equipment.
For cleaning purposes.
In forklift trucks, bulldozers, and earthmovers.
For transmix (diesel fuel), the refining of tax-paid transmix into gasoline, diesel fuel, or kerosene.

Generally, this use does not include nonbusiness use of fuel, such as use by minibikes, snowmobiles, power lawn mowers, chain saws, and other yard equipment.

Example.

Caroline owns a landscaping business. She uses power lawn mowers and chain saws in her business. The gasoline used in the power lawn mowers and chain saws qualifies as fuel used in an off-highway business use. The gasoline used in her personal lawn mower at home does not qualify.

Highway vehicle. A highway vehicle is any self-propelled vehicle designed to carry a load over public highways, whether or not it is also designed to perform other functions. Examples of vehicles designed to carry a load over public highways are passenger automobiles, motorcycles, buses, and highway-type trucks and truck tractors. A vehicle is a highway vehicle even though the vehicle's design allows it to perform a highway transportation function for only one of the following.

A particular type of load, such as passengers, furnishings, and personal effects (as in a house, office, or utility trailer).
A special kind of cargo, goods, supplies, or materials.
Some off-highway task unrelated to highway transportation, except as discussed next.

Vehicles not considered highway vehicles. Generally, the following kinds of vehicles are not considered highway vehicles for purposes of the credit or refund of fuel taxes.

Specially designed mobile machinery for nontransportation functions. A self-propelled vehicle is not a highway vehicle if all the following apply.
1. The chassis has permanently mounted to it machinery or equipment used to perform certain operations (construction, manufacturing, drilling, mining, timbering, processing, farming, or similar operations) if the operation of the machinery or equipment is unrelated to transportation on or off the public highways.
2. The chassis has been specially designed to serve only as a mobile carriage and mount (and power source, if applicable) for the machinery or equipment, whether or not the machinery or equipment is in operation.
3. The chassis could not, because of its special design and without substantial structural modification, be used as part of a vehicle designed to carry any other load.
4. The vehicle must have traveled less than 7,500 miles on public highways during the owner's taxable year.
Vehicles specially designed for off-highway transportation. A vehicle is not treated as a highway vehicle if the vehicle is specially designed for the primary function of transporting a particular type of load other than over the public highway and because of this special design, the vehicles's capability to transport a load over a public highway is substantially limited or impaired.

To make this determination, you can take into account the vehicle's size, whether the vehicle is subject to licensing, safety, or other requirements, and whether the vehicle can transport a load at a sustained speed of at least 25 miles per hour. It does not matter that the vehicle can carry heavier loads off highway than it is allowed to carry over the highway.
Nontransportation trailers and semitrailers. A trailer or semi-trailer is not treated as a highway vehicle if it is specially designed to function only as an enclosed stationary shelter for carrying on a nontransportation function at an off-highway site. For example, a trailer that is capable only of functioning as an office for an off-highway construction operation is not a highway vehicle.

Public highway. A public highway includes any road in the United States that is not a private roadway. This includes federal, state, county, and city roads and streets.

Registered. A vehicle is considered registered when it is registered or required to be registered for highway use under the law of any state, the District of Columbia, or any foreign country in which it is operated or situated. Any highway vehicle operated under a dealer's tag, license, or permit is considered registered. A highway vehicle is not considered registered solely because a special permit allows the vehicle to be operated at particular times and under specified conditions.

Dual use of propulsion motor. Off-highway business use does not include any fuel used in the propulsion motor of a registered highway vehicle even though that motor also operates special equipment by means of a power take-off or power transfer. It does not matter if the special equipment is mounted on the vehicle.

Example.

The motor of a registered concrete-mixer truck operates both the engine and the mixing unit by means of a power take-off. The fuel used in the motor to run the mixer is not off-highway business use.

Use in separate motor. Off-highway business use includes fuel used in a separate motor to operate special equipment, such as a refrigeration unit, pump, generator, or mixing unit. If you draw fuel from the same tank that supplies fuel to the propulsion motor, you must figure the quantity used in the separate motor operating the special equipment. You may make a reasonable estimate based on your operating experience and supported by your records.

You can use devices that measure the miles the vehicle has traveled (such as hubometers) to figure the gallons of fuel used to propel the vehicle. Add to this amount the fuel consumed while idling or warming up the motor before propelling the vehicle. The difference between your total fuel used and the fuel used to propel the vehicle is the fuel used in the separate motor.

Example.

Hazel owns a refrigerated truck. It has a separate motor for the refrigeration unit. The same tank supplies both motors. Using the truck's hubometer, Hazel figures that 90% of the fuel was used to propel the truck. Therefore, 10% of the fuel is used in an off-highway business use.

Fuel lost or destroyed. You cannot treat fuel lost or destroyed through spillage, fire, or other casualty as fuel used in an off-highway business use.

Export (No. 3)

Export means fuel removed from the United States with the intention that the fuel remain in a foreign country or possession of the United States. Fuel is not exported if it is in the fuel supply tank of a vehicle or aircraft.

In a Boat Engaged in Commercial Fishing (No. 4)

In a boat engaged in commercial fishing means fuel used in taking, catching, processing, or transporting fish, shellfish, or other aquatic life for commercial purposes, such as selling or processing the catch, on a specific trip basis. They include boats used in both fresh and salt water fishing. They do not include boats used for both sport fishing and commercial fishing on the same trip.

In Certain Intercity and Local Buses (No. 5)

In certain intercity and local buses means fuel used in a bus engaged in furnishing (for compensation) passenger land transportation available to the general public. The bus must be engaged in one of the following activities.

Scheduled transportation along regular routes.
Nonscheduled operations if the seating capacity of the bus is at least 20 adults, not including the driver. Vans and similar vehicles used for van-pooling or taxi service do not qualify.

Available to the general public. This means you offer service to more than a limited number of persons or organizations. If a bus operator normally provides charter operations through travel agencies but has buses available for chartering by the general public, this service is available to the general public. A bus does not qualify when its operator uses it to provide exclusive services to only one person, group, or organization. Also, intercity bus transportation does not include transporting students and employees of schools or intercity transportation in a qualified local bus.

For Diesel Fuel or Kerosene in a Qualified Local Bus (No. 6)

In a qualified local bus means fuel used in a bus meeting all the following requirements.

It is engaged in furnishing (for compensation) intracity passenger land transportation available to the general public.
It operates along scheduled, regular routes.
It has a seating capacity of at least 20 adults (excluding the driver).
It is under contract with (or is receiving more than a nominal subsidy from) any state or local government to furnish the transportation.

Intracity passenger land transportation. This is the land transportation of passengers between points located within the same metropolitan area. It includes transportation along routes that cross state, city, or county boundaries if the routes remain within the metropolitan area.

Under contract. A bus is under contract with a state or local government only if the contract imposes a bona fide obligation on the bus operator to furnish the transportation.

More than a nominal subsidy. A subsidy is more than nominal if it is reasonably expected to exceed an amount equal to 3 cents multiplied by the number of gallons of fuel used in buses on subsidized routes. A company that operates its buses along subsidized and unsubsidized intracity routes may consider its buses qualified local buses only when the buses are used on the subsidized intracity routes.

In a School Bus (No. 7)

In a school bus means fuel used in a bus engaged in the transportation of students or employees of schools. A school is an educational organization with a regular faculty and curriculum and a regularly enrolled body of students who attend the place where the educational activities occur.

For Diesel Fuel and Kerosene (Other Than Kerosene Used in Aviation) Used Other Than as a Fuel (No. 8)

Diesel fuel and kerosene (other than kerosene used in aviation) used other than as a fuel in the propulsion engine of a diesel-powered highway vehicle or diesel-powered train (not including off-highway business use), means undyed diesel fuel and undyed kerosene used in the following ways:

For home heating, lighting, and cooking.
In boats.
For any of the following nonbusiness uses.

In stationary machines, such as generators and compressors.
For cleaning purposes.
In minibikes and snowmobiles.

In Foreign Trade (No. 9)

In foreign trade means fuel used in civil aircraft employed in foreign trade or trade between the United States and any of its possessions. The term trade includes the transportation of persons or property for hire and the making of the necessary preparations for such transportation. In the case of aircraft registered in a foreign country, the country must allow reciprocal benefits for aircraft registered in the United States.

Certain Helicopter and Fixed-Wing Aircraft Uses (No. 10)

Certain helicopter uses. Certain helicopter uses means fuel used by a helicopter for any of the following purposes.

Transporting individuals, equipment, or supplies in the exploration for, or the development or removal of, hard minerals, oil, or gas.
Planting, cultivating, cutting, transporting, or caring for trees (including logging operations).
Providing emergency medical transportation.

During a use described in items (1) and (2), the helicopter must not take off from, or land at, a facility eligible for assistance under the Airport and Airway Development Act of 1970, or otherwise use services provided pursuant to section 44509 or 44913(b) or subchapter I of chapter 471 of title 49, United States Code. For item (1), treat each flight segment as a separate flight.

Fixed-wing aircraft uses. Fixed-wing aircraft uses means fuel used by a fixed-wing aircraft for any of the following purposes.

Planting, cultivating, cutting, transporting, or caring for trees (including logging operations).
Providing emergency medical transportation. The aircraft must be equipped for and exclusively dedicated on that flight to acute care emergency medical services.

During a use described in item (1), the aircraft must not take off from, or land at, a facility eligible for assistance under the Airport and Airway Development Act of 1970, or otherwise use services provided pursuant to section 44509 or 44913(b) or subchapter I of chapter 471 of title 49, United States Code.

In a Highway Vehicle Owned by the United States That is Not Used on a Highway (No. 12)

In a highway vehicle owned by the United States that is not used on a highway means fuel used in a vehicle was not used on public highways during the period covered by the claim. This use applies whether or not the vehicle is registered or required to be registered for highway use.

Exclusive Use by a Nonprofit Educational Organization (No. 13)

Exclusive use by a nonprofit educational organization means fuel used by an organization exempt from income tax under Internal Revenue Code section 501(a) that meets both of the following requirements.

It has a regular faculty and curriculum.
It has a regularly enrolled body of students who attend the place where the instruction normally occurs.

A nonprofit educational organization also includes a school operated by a church or other organization described in Internal Revenue Code section 501(c)(3) if the school meets the above requirements.

Exclusive Use by a State, Political Subdivision of a State, or the District of Columbia (No. 14)

Exclusive use by a state, political subdivision of a state, or the District of Columbia means fuel purchased by the state or local government for its exclusive use. A state or local government is any state, any political subdivision thereof, or the District of Columbia. An Indian tribal government is treated as a state only if the fuel is used in an activity that involves the exercise of an essential tribal government function. Gasoline, diesel fuel, and kerosene used by the American Red Cross is considered to be the use of these fuels by a state.

In an Aircraft or Vehicle Owned by an Aircraft Museum (No. 15)

In an aircraft or vehicle owned by an aircraft museum means fuel used in an aircraft or vehicle that is owned by an organization that meets all the following requirements.

It is exempt from income tax as an organization described in Internal Revenue Code section 501(c)(3).
It is operated as a museum under a state (or District of Columbia) charter.
It is operated exclusively for acquiring, exhibiting, and caring for aircraft of the type used for combat or transport in
World War II.

The aircraft or vehicle (such as a ground servicing vehicle for aircraft) must be used exclusively for the purposes described in item (3).

In Military Aircraft (No. 16)

In a military aircraft means fuel used in an aircraft owned by the United States or any foreign nation and constituting a part of its armed forces.

For Use in the Production of Special Motor Fuels/Alternative Fuels (No. 17)

For use in the production of special fuels/alternative fuels means used to produce any liquid fuel (including LPG or liquefied