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Loan Interest Rates

What is an appropriate interest rate for plan loans?

Photo of author, Monica Garver, CPA, CFP®, AIFA®, CDFA®.
Monica Garver, CPA, CFP®, AIFA®, CDFA®
Director of Retirement Plan Services and Financial Strategist

Both, ERISA and the IRS requires that DC plan loans reflect a “reasonable rate of interest”.

DOL Reg Section 2550.408b-1 states that “a loan will be considered to bear a reasonable rate of interest if such loan provides the plan with a return commensurate with the interest rates charged by persons in the business of lending money for loans which would be made under similar circumstances.” A pre-existing DOL Advisory Opinion, 81-12A, suggests that plan sponsors should align their plan interest rate with the interest rate banks utilize.

The IRS has a similar requirement where they informally state that the Prime Rate plus 2% would be considered to be a reasonable rate. Some plans use the Prime Rate plus 1%, or a rate based on the Moody’s Corporate Bond Yield Average.

Plan sponsors should document justification for the plan loan interest rate selected.

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