Selling a Business at Retirement

What’s the most expensive number in a business sale? Not the price. The tax, and most of it is decided before you ever sign. Selling the company you built is usually the biggest financial event of your life, and the after-tax outcome turns on choices, deal structure, timing, residency, that are far easier to shape a year out than at the closing table.

The number that matters is after tax

Two offers at the same price can leave you with wildly different amounts, because how the deal is taxed depends on how it’s structured. An asset sale and a stock sale split the tax very differently between you and the buyer. Ordinary income, depreciation recapture, and long-term capital gains can all show up in the same transaction at different rates. The headline price is a starting point. What you keep is the real deal, and that’s an exercise you do with a tax advisor before you negotiate, not after.

Why a sale is a tax bomb in one year

The core problem is concentration in time. Decades of value can land on a single tax return, vaulting you into the top brackets for that one year. For 2026, long-term capital gains hit the top 20% federal rate once taxable income passes $613,700 for a married couple filing jointly, and a big sale blows past that easily. On top of the capital-gains rate, large investment income can trigger the net investment income tax, an additional federal surtax.

And it doesn’t stop at federal tax. A spike that large sets your IRMAA Medicare surcharge two years later and, if you’re still in a high-tax state, hands that state a share too.

Levers that change the bill

Several structures exist to soften the concentration, each with trade-offs:

• Installment sale. Spread the payments, and the gain, across several years to avoid stacking it all into one top-bracket year. The cost is you carry the buyer’s credit risk over time.
• Residency change. Closing as a resident of a no-income-tax state can erase the state tax on the gain entirely, if the move is genuine and done first. See Relocation Timing and Tax Impact.
• Qualified Small Business Stock. Certain C-corporation stock held long enough can exclude a large share of the gain from federal tax. The eligibility rules are narrow and technical.
• Charitable structures. Funding a charitable remainder trust or a donor-advised fund with appreciated stock before the sale can defer or reduce the gain while meeting giving goals.

The hidden price: don’t let the tax tail wag the dog

Here’s where I watch sellers go wrong. After a lifetime of building one illiquid asset, the temptation is to roll the proceeds straight into another illiquid, tax-driven deal, a big leveraged real estate play, a private fund, anything that promises to defer the tax. That’s trading one concentrated, hard-to-sell risk for another and calling it diversification. I don’t manage money for people who can live forever, and I’m wary of any move whose main selling point is the deduction. The point of the sale is to convert a single concentrated bet into liquidity and freedom. A tax break is a poor reason to give that back.

For higher-net-worth households

The bigger the sale, the earlier the planning has to start, ideally a year or more before you go to market, because the best levers, residency, entity structure, charitable vehicles, QSBS holding periods, all need lead time and can’t be bolted on at closing. Coordinate the sale year with everything else you control: it’s the wrong year to also run large Roth conversions on top, and the right time to think about what the proceeds do for the next thirty years, not just the next April.

You spent decades building the thing. Spend a year planning the exit. The price gets your attention, but the structure, the timing, and where you sign decide what you actually take home.