We are structuring a sale with both fixed installment notes and contingent earnout payments under Section 453. How does the IRS installment sale method treat contingent earnouts, and how do we prevent front-loading our tax basis recovery?

Question

Tyler Smith · Accepted Answer

Under Internal Revenue Code Section 453, combining fixed installment notes with a contingent earnout creates complex tax consequences under the IRS contingent payment installment sale regulations. When a transaction has a stated maximum selling price, the IRS assumes the seller will receive that maximum amount for the purpose of computing basis recovery.

This default rule works against you. The IRS spreads your tax basis across the maximum theoretical price. As a result, you recognize an artificially high percentage of capital gain on the upfront cash and fixed installment payments in the early years. If the business fails to hit the earnout targets in later years, you will have overpaid taxes upfront and ended up with a capital loss at the end of the earnout term. That capital loss cannot be carried back to offset your prior capital gain; it can only offset future capital gains or three thousand dollars of ordinary income annually.

To resolve this issue, work with your CPA to negotiate a structured fixed payment schedule or utilize alternative basis recovery methods under Treasury Regulation 15A.453-1. If a maximum selling price cannot be determined, the IRS defaults to recovering basis in equal annual increments over the term of the agreement, which also distorts actual cash received. You can petition the IRS for an alternative method of basis recovery if you demonstrate that the standard rules substantially accelerate taxable gain ahead of actual proceeds.