The buyer wants a multi-year installment sale under Section 453 with zero stated interest to keep payments level, but our accountant warned us about imputed interest. How do we structure the note to avoid converting capital gains into ordinary income?

Question

Tyler Smith · Accepted Answer

The IRS does not permit interest-free promissory notes in business sales. Under Section 483 and Section 1274 of the Internal Revenue Code, if a debt instrument does not state an adequate interest rate, the IRS will automatically recharacterize a portion of every principal payment as imputed ordinary interest income rather than capital gain. This shrinks your enterprise valuation and triggers higher ordinary tax rates on money you assumed would be taxed at long-term capital gains rates.

To keep your tax position clean and preserve installment sale treatment under Section 453, take the following steps:
- Require the installment note to carry a stated interest rate at least equal to the Applicable Federal Rate (AFR) published monthly by the IRS for the corresponding maturity term.
- If the buyer insists on a flat, level payment schedule for their cash flow planning, adjust the headline principal value upward and run a fully amortizing payment schedule using the prevailing AFR rather than zero interest.
- Negotiate monthly or quarterly interest payments alongside principal amortization to avoid original issue discount (OID) complications, which force you to pay tax on accrued unpaid interest before you actually receive the cash.
- Ensure the note explicitly specifies the interest component and principal component on each scheduled payment stub to prevent audit recharacterization.

Do not let a buyer disguise financing costs as purchase price. Meet the statutory minimum interest rates so your hard-earned equity keeps its long-term capital gains status.