Seller Financing a Business Sale: How the Tax Works

How selling a business on a seller note works

When you seller-finance a business, the buyer pays part of the price at closing and signs a promissory note for the rest. Under installment sale tax rules (IRC 453), you report gain as principal comes in instead of all in the year of sale. Interest on the note is ordinary income each year.

The catch is that a business is not one asset. IRS Publication 537 says the sale of a whole business for one price is treated as a sale of each asset. You allocate the price across asset classes using the residual method of Section 1060, both sides report it on Form 8594, and each class follows its own tax rule. Some classes can use the installment method. Some cannot. For the broader rules on carrying paper, see seller financing taxes.

Asset sale vs stock sale on a note

• Asset sale. The buyer gets a fresh, depreciable basis, so most buyers prefer it. You (or your S corporation or LLC) sell each asset, and the class-by-class rules below apply.
• Stock sale of a corporation. Shares of a private company are a single capital asset. The whole gain can generally be spread on the installment method, with no inventory or recapture carve-out at the shareholder level. Stock traded on an established market cannot use the installment method (IRC 453(k)(2)).
• Partnership or LLC interest. The share of gain from unrealized receivables and inventory (Section 751, which includes recapture) is ordinary income and cannot be reported on the installment method. The rest can.
• Deemed asset sale. A Section 338(h)(10) election treats a stock sale as an asset sale for tax, which brings the asset-class rules back.

A C corporation that sells assets is taxed twice, which is where a personal goodwill sale can matter.

Which assets can use Section 453, and which cannot

Because recapture is taxed in year one even if the buyer pays little at closing, the depreciation recapture on an installment sale often sets the minimum down payment. The purchase price allocation sets how much lands in each row.

Worked example (engine-computed)

Assumptions (illustrative): married filing jointly, tax year 2026, $80,000 of other ordinary income, seller materially participated (no net investment income tax on the sale gain), federal tax only (including alternative minimum tax where the engine finds it). Asset sale for $2,000,000 allocated as: inventory $150,000 (basis $120,000); equipment $250,000 (basis $50,000 after $400,000 of depreciation); self-created goodwill $1,600,000 (basis $0). No selling costs, no non-compete. Seller note: $500,000 down (the agreement applies $150,000 of it to inventory), $1,500,000 note at 6.5% interest, $150,000 of principal a year for 10 years.

• Inventory: $30,000 of ordinary income, year one.
• Equipment: all $200,000 of gain is Section 1245 recapture, year one.
• Installment assets: $1,850,000 of price, $1,600,000 gross profit, so about 86.5% of each principal dollar is capital gain.

Spreading the goodwill gain keeps most of it in lower brackets: the gain alone costs $92,033 plus $117,940 over the life of the note, against $379,875 in a cash year. The note also pays $536,250 of interest; that income is taxed (and in this example, net investment income tax appears in years two to seven), but it is income the seller would not get in a cash sale. Note the third row: with no down payment, the seller still owes $46,628 on inventory and recapture with no cash in hand.

Engine: yearTax, 2026 brackets from Rev. Proc. 2025-32. State tax is not shown and can be large. To test your own allocation, run your numbers.

Personal goodwill, earn-outs and the non-compete

Personal goodwill

If the value sits in the owner's own relationships and skill, and the owner has no non-compete or employment agreement with the company, the owner may sell that goodwill directly. Courts have accepted this (Martin Ice Cream Co. v. Commissioner, 110 T.C. 189 (1998)) and rejected it where the owner had already tied the goodwill to the company (Howard v. United States, 9th Cir. 2011). The owner's personal goodwill can be sold on its own installment note. See the personal goodwill sale analysis.

Earn-out vs seller note

A seller note is a fixed debt: the buyer owes it whether or not the business performs. An earn-out pays only if targets are hit. For tax, an earn-out is a contingent payment installment sale: basis is recovered under Treas. Reg. 15a.453-1(c) (stated maximum price, fixed period, or a 15-year default), and part of each payment can be recharacterized as interest. Many deals use both.

Non-compete and consulting

Money allocated to a covenant not to compete is ordinary income to you, taxed as received, and the buyer amortizes it over 15 years under Section 197. Every dollar moved there from goodwill turns capital gain into ordinary income.

SBA loans: standby and subordination

Many small business buyers use an SBA 7(a) loan. SBA SOP 50 10 8.1 (effective October 1, 2026) lets seller debt count toward the buyer's equity injection only if it is subordinated to the lender and on full standby: no principal or interest payments for the term of the 7(a) loan. Standby debt may accrue interest and be paid after the SBA loan is repaid. Seller debt can supply no more than half of the required equity injection, and seller earn-outs are prohibited in SBA deals. Seller debt not on standby is allowed but must fit within the business valuation and the buyer's debt service coverage.

Tax effect: a full-standby note defers your gain longer, but your money sits behind a bank longer too. Interest that accrues unpaid can still be taxable under the original issue discount rules, depending on how the note is written. See seller note interest and the AFR.

Protecting the note: how to know the buyer can pay

Tax deferral is worth little if the buyer stops paying. Standard protections for a business seller:

• Down payment large enough to cover your year-one tax and give the buyer real money at stake.
• Security interest in all business assets, perfected with a UCC-1 filing, and a pledge of the buyer entity's stock or membership interests. For intangible-heavy and online businesses, include domains, accounts, code and intellectual property.
• Personal guarantee from the buyer's owners, and their spouses where state law makes that necessary.
• Note terms: interest at or above the AFR, an amortization schedule, any balloon, acceleration on default and on a sale of the business, cure periods, prepayment terms, late fees.
• Covenants and reporting: monthly or quarterly financials, limits on new debt and owner distributions, minimum working capital, and cross-default with the senior loan.

When a senior lender is involved, the subordination agreement limits when you can collect or enforce. Read it before you sign the purchase agreement. If the buyer defaults, see when the buyer stops paying.

IRS stance, costs, and how it compares

The installment method for business sales is settled law (IRC 453, Pub. 537). Audit risk sits in execution: Forms 8594 that do not match between buyer and seller, recapture or inventory left on the installment schedule, and price moved between goodwill and the non-compete without support. Notes over $5 million outstanding at year end can trigger the Section 453A interest charge, and borrowing against the note is treated as payment under the pledge rule. A sale to a related entity can lose installment treatment for depreciable property (IRC 453(g)).

Costs: legal fees to draft the note, security agreement and personal guarantee; UCC filings; a valuation or allocation study if values are contested; and your CPA's preparation of Forms 6252, 4797 and 8594.

Compared with a cash sale, the seller note defers the capital gain portion and adds interest income, at the price of buyer risk. Compared with an earn-out, it is a fixed claim. For a side-by-side of every path, Get the full Big Sale Tax Analysis.

Get the full Big Sale Tax Analysis

Frequently asked questions