A 64-Year-Old Selling a Family Business for $3.2 Million Faces a $740,000 Capital Gains Tax Bill Without Planning

Selling a business you spent 30 years building should feel like a finish line. For a 64-year-old California owner cashing out a closely held S-corp for $3.2 million, it can feel more like an ambush. With a cost basis of roughly $400,000, the gain is $2.8 million, and the combined federal and California tax bill can quietly cross $1 million if no planning happens before the deal closes.

This is one of the most common scenarios in r/tax and r/fatFIRE. One owner in r/tax recently asked whether capital gains were “inevitable” on an S-corp sale after reading about Section 1202, only to be told the structure mostly locks them in. That is the trap. By the time most owners learn the rules, the clock has already run out on the best moves.

The Numbers at a Glance

• Age: 64, planning to retire after the sale
• Sale price: $3.2 million; basis: $400,000
• Total long-term capital gain: $2.8 million
• State of residence: California (top bracket 13.3%)
• Entity: S-corporation, held for 30 years

Why the Tax Bill Is Bigger Than You Think

The single financial reality driving this outcome is stacking. Federal long-term capital gains at the top 20% rate alone produce $560,000 of tax on a $2.8 million gain. The Net Investment Income Tax of 3.8% adds another $106,400. California then layers 13.3% on top, roughly $372,400 more. The effective rate lands above 37%, and depreciation recapture on equipment can push the federal-only piece toward $740,000.

That is not a rounding error on retirement. At today’s 4.4% 10-year Treasury yield, an extra $1 million kept invested throws off meaningful safe income for life at current Treasury yields. Losing it to taxes that planning could have legally avoided is the difference between a comfortable retirement and a constrained one.

Three Moves That Actually Change the Outcome

1. Qualified Small Business Stock via F-reorganization. Section 1202 can exclude up to 100% of federal gain on the first $10 million of qualifying C-corp stock. S-corp shares do not qualify directly, but an F-reorganization can convert the entity to a C-corp. The catch: the five-year holding period on the new C-corp stock starts from issuance. At 64 with a sale already on the horizon, this only works if the timeline is at least five years out. For owners 55 to 60, thinking ahead, it is the single most powerful lever in the tax code.
2. Charitable Remainder Trust. A CRT lets the seller contribute shares before the sale, defer the gain, draw an income stream for life, and capture a partial charitable deduction. It works best for owners who already plan to leave money to charity. It is a poor fit for anyone who needs full liquidity from the proceeds.
3. Change residency, then use an installment sale. Establishing residency in a no-income-tax state at least 18 months before closing can eliminate the California piece, worth roughly $372,400 here. California’s Franchise Tax Board scrutinizes these moves aggressively, so the move has to be real. Layering an installment sale on top spreads the federal gain across years, useful when the lower-rate brackets and NIIT threshold can be exploited. Today’s 3.75% Fed funds rate keeps the required Applicable Federal Rate on installment notes manageable for buyers.

What to Do This Week

Pull the original capital contribution records and verify the basis.

Then map the closing date against the calendar. If the sale is more than five years away, QSBS planning is the highest-value conversation. If it is closer than that, residency planning and a CRT are the two levers with real dollars behind them. The most expensive mistake in this scenario is signing a letter of intent before any of these structures are in place. Once the deal is in motion, almost every meaningful option is gone.