The Internal Revenue Service (IRS) studied 401(k) plan compliance with Internal Revenue Code requirements for tax-qualified plans. GAO found that IRS's estimates of noncompliance were inaccurate. The study, which audited a sample of 401(k) plans, did not provide information on the severity of the compliance violations identified and did not determine the number of plan participants or the amount of assets associated with noncompliance errors. Only 27 of the 73 study questions identified as compliance indicators conclusively demonstrated whether a plan was compliant or not. Consequently, the 44 percent reported to have one or more instances of noncompliance is at best an upper limit on the extent of noncompliance found. IRS has chosen specific types of private pension plans to study in a manner similar to the one conducted on 401(k) pension plans. The data that IRS collects will be analyzed to determine the prevalence and types of noncompliance among the plans studied.
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