Installment Sales: Spreading Capital Gains Tax Over Multiple Years When Selling a Business

By Yarik Yarosh, CPA ·September 5, 2026 ·Updated September 23, 2026 ·5 min read

Written by Yarik Yarosh, CPA (US & Canada) September 5, 2026 · FL CPA license AC61704 · CPA Ontario

When a business or major business asset is sold and the buyer pays over time (seller financing), the installment method under IRC 453 allows the seller to report the capital gain proportionally as payments are received, rather than recognizing the entire gain in the year of sale. This spreads the tax liability over the payment period, potentially keeping the seller in lower tax brackets each year and deferring a portion of the tax for years.

✓Key takeaway

Installment sale rules (IRC 453):

Automatic application. The installment method applies automatically to any sale where at least one payment is received after the year of sale. The seller can elect out (report the entire gain in Year 1) by choosing to do so on the return, but must affirmatively elect out.
Gross profit ratio. Each payment is divided into three components:
- Return of basis (tax-free)
- Capital gain (taxable at capital gains rates)
- Interest income (taxable at ordinary income rates)
- The gross profit ratio = (total gain / total contract price) determines the gain portion of each payment
Interest requirement. The IRS requires adequate stated interest on installment payments. If the contract doesn’t state interest or states below-market interest, the IRS will impute interest at the applicable federal rate (AFR), which increases the ordinary income component and decreases the capital gain component.
Depreciation recapture is front-loaded. Section 1245 and 1250 depreciation recapture is recognized in the year of sale, regardless of when payments are received. Only the capital gain portion above recapture is spread over the installment period.
Who cannot use installment sales:
- Dealer dispositions (inventory sales)
- Sales of publicly traded securities
- Depreciation recapture (recognized in Year 1)
- Related-party sales with resale within 2 years (IRC 453(e))
Pledging the installment note. If the seller uses the installment note as collateral for a loan, the pledged amount is treated as a payment received, accelerating the gain recognition.

How does the installment method reduce total taxes?

Hypothetical example

Round numbers. For current guidance, see IRS installment agreement guidance. A business owner sells their business for $500,000 with a $100,000 down payment and $100,000/year for 4 additional years (total: 5 payments). The business has a basis of $100,000. Gain: $400,000. The seller is married filing jointly with about $150,000 of other income.

Lump-sum recognition (Year 1):

Capital gain: $400,000
Federal capital gains tax (15%, since for 2025 the 15% band runs to $600,050 of taxable income MFJ): $60,000
NIIT (3.8% on the $300,000 of MAGI over $250,000): $11,400
State tax (5%): $20,000
Total tax: $91,400 (all due in Year 1)

Installment method (5 annual payments):

Gross profit ratio: $400,000 / $500,000 = 80%
Each $100,000 payment: $20,000 return of basis + $80,000 capital gain
Annual capital gains tax (15% rate, lower bracket): $80,000 x 15% = $12,000
NIIT: may not apply if MAGI stays below $250,000 (MFJ) each year
State tax (5%): $80,000 x 5% = $4,000
Annual total: $16,000
5-year total: $80,000

Tax savings from installment method: $11,400 ($91,400 - $80,000)

With about $150,000 of other income, the gain stays in the 15% capital gains band either way, so the savings come from avoiding the 3.8% NIIT by keeping MAGI below $250,000 each year. A seller whose other income would push a lump-sum gain past the 15% band ($600,050 of taxable income MFJ for 2025) could also save the difference between 20% and 15%.

Plus the time value of money: Paying $16,000/year for 5 years is worth less in present value than paying $91,400 in Year 1. At a 5% discount rate, the present value of $80,000 over 5 years is approximately $71,200. The true savings (rate benefit + time value) approaches $20,200.

Illustrative numbers only, not a real client and not advice for your facts.

Can I spread the gain from a business sale over multiple years?

If the buyer pays in installments, you can report the gain proportionally under IRC 453 as you receive each payment. The installment method applies automatically to any sale where at least one payment is received after the tax year of the sale. Each payment consists of three components: return of basis (tax-free), gain (taxed at capital gains rates), and interest income (taxed as ordinary income). Dealer dispositions, sales of inventory, and sales of depreciable property to a related party don’t qualify for installment treatment. If you elect out of the installment method (by reporting the full gain in the year of sale), you cannot reverse that election without IRS consent.

How are long-term and short-term capital gains taxed differently?

Short-term capital gains (assets held one year or less) are taxed at ordinary income rates, which can be as high as 37%. Long-term capital gains (assets held more than one year) are taxed at preferential rates: 0%, 15%, or 20% depending on your taxable income. The 3.8% net investment income tax (NIIT) applies on top of both rates for taxpayers with modified AGI above $200,000 ($250,000 married filing jointly). The holding period is critical for tax planning: selling an asset one day before the one-year mark costs you the rate differential, which can be 20+ percentage points. Installment sales under IRC 453 can spread the recognition of gain over multiple years.

Related guides:

Can seller financing keep my gain in the 15% bracket?

It can, as long as each year’s taxable income stays under the 15% ceiling. For 2025 that ceiling is $600,050 for joint filers, $533,400 for single filers and $566,700 for head of household; for 2026 it’s $613,700, $545,500 and $579,600. Long-term gain above the ceiling in any year is taxed at 20%, which is why one lump-sum year can cost more.

Depreciation recapture works against the plan. It’s recognized in the year of sale no matter when the buyer pays, and it’s ordinary income taxed at rates up to 37%, so a business with heavily depreciated equipment front-loads part of its tax. The 3.8% net investment income tax uses fixed thresholds of $250,000 joint and $200,000 single, and gain on assets of a business you actively ran may be excluded from it entirely.

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Cite this page

Yarik Yarosh, CPA. "Installment Sales: Spreading Capital Gains Tax Over Multiple Years When Selling a Business." Blue Cloud CPA, September 5, 2026, updated September 23, 2026. https://bluecloudcpa.com/guides/small-business-installment-sale-tax-deferral

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.