You may need copies of your original or amended income tax returns for 2000, 2001, and 2002 to figure your tax on Schedule J. If you do not have copies of those returns, you can get them by filing Form 4506. See your Form 1040 instruction booklet to find out how to get this form. Keep a copy of your 2003 income tax return for use in 2004, 2005, or 2006.

See Regulations section 1.1301-1 for more details.