What to Do With Business Sale Proceeds: A First-Year Plan

Selling a business creates more planning complexity than almost any other wealth event. Deal structure, earnouts, a massive income spike, employee obligations, and the sudden loss of a familiar financial anchor all arrive at once. The first-year plan is what separates sellers who build lasting wealth from those who spend the next decade undoing first-year mistakes.

Your first question: what do you actually net?

The headline number in the purchase agreement is rarely the amount that hits your account. Before building any plan, you need to work through the layers:

Gross sale price. The number in the letter of intent or purchase agreement.
Minus transaction costs. M&A advisory fees (typically 3–10% for lower middle-market deals), legal fees, accounting, and rep and warranty insurance can reduce proceeds by 5–15% of the headline.
Minus escrow holdbacks. Buyers typically hold 5–15% in escrow for 12–24 months against indemnification claims. This is your money, but it is not liquid yet.
Minus federal and state taxes. For a stock sale, expect 23.8% federal on capital gain above basis (20% LTCG + 3.8% NIIT) plus state tax. For an asset sale, the mix of ordinary income recapture and capital gain can push the effective rate significantly higher. See the windfall tax planning guide for a full rate breakdown by source.
Equals true net proceeds — the amount that is actually yours to allocate.

Use the windfall allocation calculator to model different scenarios before your CPA runs the final numbers. Knowing your true net before making commitments is the single most valuable first step.

Deal structure shapes the tax bill more than anything else

Two sellers with identical headline prices can have very different tax outcomes depending on how the deal was structured. The four most common structures:

Stock sale (or LLC membership interest)

All gain above your basis is taxed at long-term capital gain rates if held more than one year — 20% federal plus 3.8% NIIT for high earners, or 23.8% combined.¹ This is generally the most tax-efficient structure for the seller. Many buyers prefer asset sales for the stepped-up basis; expect the buyer to ask for a price concession in exchange for accepting a stock deal.

Asset sale

Different assets in the deal are taxed differently. Goodwill and customer lists qualify for long-term capital gains rates. Equipment, vehicles, and fixtures are subject to Section 1245 recapture: prior depreciation is recaptured as ordinary income (up to 37%).² Building improvements can trigger Section 1250 recapture at up to 25%. Asset sales almost always result in a higher total tax bill for the seller than stock sales.

Installment sale (Section 453)

Proceeds are received over multiple years, and gain is recognized in proportion to each year's payment.³ This spreads the income spike across years, potentially keeping you below top LTCG brackets and reducing IRMAA exposure. The tradeoff: the deferred payments carry interest income at the applicable federal rate (AFR), taxed as ordinary income, and the buyer's financial risk is on your balance sheet during the installment period.

Earnouts

A portion of the price is contingent on future performance. Tax treatment of earnout payments depends on structure: payments tied to services (stay bonuses, consulting) are ordinary income; payments structured as deferred purchase price are capital gain. Your M&A attorney and CPA should clarify the tax treatment before signing. Budget earnout receipts conservatively — you cannot plan spending against contingent income.

Setting the first-year cash policy

Business sellers face a version of the windfall problem that is especially acute: you may have had most of your personal financial life tied up in the business, and now it is suddenly liquid — all at once, with a large tax bill attached. A written cash policy prevents decisions from being made under pressure.

Four numbers to establish before any money moves:

Tax reserve. For a stock sale to a high-income seller, a working estimate is 25–30% federal plus your state rate. For an asset sale with significant equipment recapture, the effective blended rate can reach 35–40% or higher on the full proceeds. Work with your CPA to pin the actual number. Keep the reserve in short-term Treasuries or FDIC-insured money market — do not invest it.
Escrow holdback. Treat escrowed amounts as unavailable until released. Do not plan around them.
Liquid buffer. Set aside 18–24 months of living expenses in accessible cash before making long-term investment commitments. Many business owners have minimal personal liquidity outside the business; the sale may be the first time you have had unencumbered personal cash.
Investable capital. What remains after the tax reserve, escrowed funds, and liquid buffer is the amount to build the long-term plan around. For most sellers, this is 30–50% of the headline sale price — smaller than it feels on close day.

The income spike: IRMAA and estimated taxes

A sale in the $1M–$25M range creates one of the largest single-year income spikes most individuals will ever experience. Two tax issues that catch sellers off guard:

Estimated taxes

Capital gains and business income from the sale are not subject to withholding. You are responsible for making quarterly estimated payments or risk underpayment penalties. The safest path: pay 110% of your prior-year tax liability across the four quarterly installments due in April, June, September, and January.⁴ If your 2025 federal tax was $120,000, pay $132,000 across the 2026 quarters — this creates a safe harbor regardless of how large the sale-year bill turns out to be.

IRMAA (Medicare premium surcharges)

Medicare uses a two-year lookback to set Part B and Part D premiums. A high-income sale in 2026 means your 2028 premiums are calculated using 2026 income. For 2026 Part B, surcharges begin at $109,000 MAGI (single) or $218,000 MAGI (MFJ).⁵ A seller whose MAGI spikes to $5M in the sale year will pay the maximum IRMAA tier for two subsequent years. Strategies that reduce the spike-year AGI — installment sale structure, charitable bunching, Qualified Opportunity Zone deferral — can permanently avoid this exposure if planned before the deal closes.

Charitable giving: the sale year is the best window

For sellers with charitable intentions, the year of a business sale is the highest-value year to give. Income is elevated, making deductions worth more than in any normal year.

Donor-advised fund (DAF): Contribute cash — up to 60% of AGI⁶ — before December 31 of the sale year to generate a deduction against the spike-year income. The DAF holds the funds and distributes to charities over future years on your timeline. This decouples the tax event from the giving decision.
Appreciated securities or business interests: Contributing appreciated assets directly to a DAF avoids the embedded capital gain entirely while generating a fair-market-value deduction (subject to 30% of AGI for non-cash contributions). If pre-sale planning is still possible, contributing a minority interest before the sale closes can be a powerful strategy — coordinate with your M&A attorney and CPA.
Charitable remainder trust (CRT): For very large transactions, a CRT can provide an income stream, a partial deduction, and deferral of the embedded gain. Requires planning before the sale closes to be effective.

Deploying capital: methodical over immediate

After a sale closes, the instinct is to "get the money working." For smaller windfalls, lump-sum investing typically outperforms staged deployment over time. But for former business owners, there are reasons to move methodically over 12–24 months that are not purely about market timing:

Psychological adjustment time. Your personal relationship with money and risk is about to change significantly. An investment policy statement drafted two months post-sale will reflect a more stable risk tolerance than one drafted in week one.
Escrow resolution. You may receive additional proceeds as holdbacks release. The full picture is not clear until the escrow period closes.
Earnout trajectory. If a portion of price is contingent, the total available capital may change over 2–5 years.
Tax optimization windows. A fee-only advisor can time major allocations — Roth conversions, QOZ investments, large charitable contributions — with quarterly planning in mind rather than forcing them all into the first 30 days.

Staged deployment does not mean "sitting in cash indefinitely." It means building an investment policy statement first, then moving capital purposefully according to that plan rather than reacting to urgency or opportunity pressure.

Estate plan updates after a sale close

A business sale changes your net worth materially — often crossing thresholds where existing estate documents are no longer adequate. At minimum, review the following immediately after close:

Account titling. New accounts receiving proceeds should be titled consistently with your estate plan. Individual accounts, trust accounts, and joint accounts have different estate and creditor-protection consequences.
Beneficiary designations. These govern regardless of what a will says. Confirm all accounts have correct beneficiaries.
Trust structures. If your estate now exceeds $15,000,000 (the 2026 per-person lifetime exemption, permanently raised by OBBBA⁷), existing revocable trusts may need to be supplemented with irrevocable gifting or dynasty trust structures.
Business succession documents. Operating agreements, buy-sell provisions, and other business documents are now moot — ensure clean termination of any continuing obligations or representations.

Why a fee-only advisor matters after a business sale

Closing a sale generates significant outreach from financial professionals: wirehouses, insurance agents, annuity salespeople, private placement representatives, and commission-based planners who earn meaningful fees on large investment transactions. A fee-only fiduciary earns no commission income tied to product placement. Their only incentive is to build a plan that works for you.

The highest-risk period is the 90 days after the wire arrives. Commitments made before the cash policy is written — real estate, alternative investments, family gifts, concentrated re-investment in a new venture — are frequently the ones sellers regret most. The role of a fee-only advisor is to slow the process down enough that irreversible decisions are made deliberately, not under pressure.

For general sudden-wealth planning principles, see what to do after receiving a large sum of money. For a detailed breakdown of tax rates by windfall type, see the windfall tax planning guide.

Sources

Tax values verified as of June 2026. Dollar thresholds are subject to annual adjustment by the IRS.

IRS Topic 409 — Capital Gains and Losses. Long-term capital gains rates and 3.8% NIIT threshold ($200,000 single / $250,000 MFJ). NIIT thresholds are not indexed for inflation (IRC §1411).
IRS Publication 544 — Sales and Other Dispositions of Assets. Section 1245 recapture (depreciable personal property) taxed as ordinary income; Section 1250 recapture (depreciable real property) taxed at maximum 25% unrecaptured gain rate.
IRS Topic 705 — Installment Sales. Section 453 treatment: gain recognized proportionally as payments are received; interest income at applicable federal rate (AFR) is ordinary income.
IRS Estimated Taxes. The 110% prior-year safe harbor applies when prior-year AGI exceeds $150,000. Quarterly payment dates: April 15, June 16, September 15, January 15.
CMS Fact Sheet: 2026 Medicare Parts A & B Premiums and Deductibles. IRMAA surcharges for Part B based on 2024 MAGI; first tier starts at $109,000 single / $218,000 MFJ.
IRS Charitable Contribution Deductions. Cash contributions to public charities (including donor-advised funds) deductible up to 60% of AGI; appreciated property contributions limited to 30% of AGI.
IRS 2026 Inflation Adjustments — OBBBA. Estate and gift tax exemption permanently set at $15,000,000 per person for 2026 under the One Big Beautiful Bill Act (2025).

Tax values verified June 2026 against IRC §§453, 1245, 1250, 1411, Rev. Proc. 2025-32, and CMS 2026 IRMAA fact sheet. Verify current-year adjustments with a CPA or qualified tax advisor before making planning decisions.

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