How does Section 453 handle contingent payment sales and earnouts?

Question

Tyler Smith · Accepted Answer

When a business or asset sale includes an earnout or variable consideration, the transaction falls under the contingent payment sale regulations of Treasury Regulation Section 15A.453-1(c). Because the total contract price is uncertain at the time of sale, the IRS applies specific ordering rules to allocate the seller basis against incoming payments over time.

The regulatory framework establishes three distinct mechanisms depending on the terms of the purchase agreement:

1. Stated Maximum Selling Price: If the agreement specifies a cap on what the buyer might pay, basis is allocated assuming the maximum price will be achieved. Each installment payment recognizes gain based on this assumed maximum gross profit ratio. If the seller ultimately receives less than the maximum, they can adjust the gross profit percentage in later years or claim a capital loss in the final year.

2. Fixed Period of Time: If there is no stated maximum price but payments must occur over a set number of years, the seller's basis is allocated ratably across each year of that period. Even if zero payment is received in a particular tax year, basis is generally amortized forward, unless the seller demonstrates unrecoverable loss.

3. Neither Stated Maximum Nor Fixed Period: In transactions where neither the price nor the timeline is capped, the IRS examines whether a genuine sale occurred. If valid, the seller recovers basis ratably over an assumed 15-year period. However, investment income rules and income forecast methods may be requested under private letter rulings if the 15-year rule significantly distorts basis recovery.

Sellers negotiating earnout structures must balance financial incentives against deferred basis recovery, as back-loaded earnout payments paired with front-loaded basis depletion can accelerate taxable gain in early years.