Selling Your Business? What Owners Need to Know About Taxes Before a Sale

That is the kind of gap business owners need to understand before they negotiate the purchase agreement.

Now, if your company is an LLC or S corporation, the math may not look exactly like this because you may not have the same corporate-level tax layer. But the core lesson still holds: deal structure changes what you keep. Even in a pass-through entity, an asset sale can shift more of the proceeds toward ordinary income, depreciation recapture, or less favorable allocation buckets.

How to Reduce or Defer Taxes Before the Sale Closes

You can’t make capital gains disappear, but you can often reduce, defer, or re-characterize them.

1. Negotiate purchase price allocation carefully

In an asset sale, the buyer and seller agree on a total price and then split that price across asset categories. The split is reported on Form 8594, which both parties sign and file. Each category is taxed differently, which means the same $2 million sale can produce a meaningfully different tax bill depending on how the price is allocated.

The categories that matter most:

Inventory

Inventory is taxed as ordinary income. For most sellers, this is the worst tax outcome on the spectrum. Allocating heavily to inventory is bad for the seller and useful for the buyer.

Furniture, fixtures, and equipment (FF&E)

These trigger depreciation recapture to the extent the assets have been depreciated. The recaptured amount is taxed at ordinary rates. For a business that has fully depreciated its equipment, almost the entire allocation to FF&E becomes ordinary income.

Customer lists, non-compete agreements, and consulting agreements

Non-compete agreements and consulting agreements generally produce ordinary income to the seller. Customer lists and customer-based intangibles may receive capital-gain treatment depending on the structure of the sale and the underlying facts.

Real property

Receives Section 1231 treatment, which is generally favorable: gains can be capital gain, losses can be ordinary.

Goodwill

Receives long-term capital gain treatment. For most sellers, this is the best category to allocate value to. Buyers can also amortize goodwill over 15 years, so they don’t lose anything by agreeing to a goodwill-heavy allocation, but they may push back if they want faster write-offs from FF&E or non-compete agreements. However, there may be buyer-specific constraints such as time value of deductions, buyer tax attributes, and negotiated economics.

Where the negotiation actually happens.

The IRS requires the allocation to be reasonable. Both parties have to use the same numbers on Form 8594, so the split is binding. But within “reasonable,” there is real room.

A business with $300,000 of fully depreciated equipment, $1.5 million of goodwill, and $200,000 of inventory could see those numbers shift by tens or hundreds of thousands, depending on how each side argues their valuation.

The seller’s leverage is highest before the LOI is signed. Once allocation language is in the letter of intent, it becomes harder to renegotiate. Sellers who wait until the purchase agreement to think about allocation usually accept whatever the buyer’s accountant proposed.

The single most important move: model the after-tax proceeds under the buyer’s proposed allocation before you sign anything. If you don’t like the math, propose a different allocation in the LOI itself. The buyer’s tax position is often less affected by reallocation than the seller’s, which means there is often room to negotiate without changing the buyer’s economics meaningfully.

2. Consider whether a stock sale is realistic

For C-corp owners, the C-corp example above shows the math. A stock sale can produce hundreds of thousands more in after-tax proceeds. Buyers usually resist because asset purchases give them better tax benefits, so the negotiation becomes economic. Sometimes a seller accepts a slightly lower gross price for a meaningfully better after-tax outcome.

3. Explore installment sale treatment

As the SBA notes, an installment sale can spread gain recognition across more than one tax year when at least one payment is received later. That may help smooth the tax impact, although it does not work the same way for every asset type, and it introduces buyer-credit risk.

How the math actually changes:

If you sell a $2 million business with $1.6 million of gain and receive the entire price at closing, the gain is recognized in one year. The seller’s marginal capital gains rate, including the 3.8% Net Investment Income Tax, applies to the full amount in that year. For a high-income seller, that pushes the gain into the 23.8% federal rate.

If the same seller takes $500,000 at closing and four annual payments of $375,000, only the gain attributable to each year’s payment is recognized. The seller may stay in lower brackets in years when other income is reduced (often after they stop working in the business). Interest on the note is taxed as ordinary income, but the principal portion of each payment retains its capital gain character.

The risk

An installment sale is, in effect, seller financing. If the buyer’s business runs into trouble, the seller can lose principal payments and may have to foreclose on the company they just sold. The IRS also imputes market-rate interest on the note, which is taxed as ordinary income on top of the gain.

What doesn’t qualify:

Inventory and receivables can’t be reported on the installment method. Depreciation recapture is recognized in the year of sale regardless of payment timing. For sellers whose deal is heavy on these categories, installment treatment provides less benefit than the headline math suggests.

4. Review qualified small business stock rules

In some cases, owners of eligible qualified small business stock (QSBS) may be able to exclude some or all of the gain, subject to strict requirements around original issuance, holding period, business type, and asset limits. The IRS publication on investment income and expenses discusses Section 1202 and related QSBS rules.

Who qualifies:

• The company must be a domestic C corporation when the stock was issued, and remain a C corp for substantially all the holding period.
• The stock must have been originally issued to the seller (not bought from another shareholder).
• The company’s gross assets must have been below the threshold at the time the stock was issued. For stock issued before July 4, 2025, the threshold is $50 million. For stock issued after that date, the threshold is $75 million. (Thresholds/dates may change.)
• The seller must have held the stock for at least five years before the sale (for stock issued before July 4, 2025).
• The company must be engaged in a qualified trade or business. Most operating businesses qualify. Service businesses (law, health, consulting, financial services, performing arts, athletics) generally don’t.

The exclusion ceiling:

The maximum exclusion is the greater of $15 million in lifetime gain per taxpayer per company (for stock issued after July 4, 2025), or 10 times the seller’s original basis. For pre-OBBBA stock issued before July 4, 2025, the cap is $10 million instead. For most founders, the dollar cap is the binding figure, but for owners who put significant capital in, the 10x basis alternative can be much higher. A founder who put $2 million into the company can exclude up to $20 million in gain on sale.

Why most owners miss it:

QSBS rules reward planning that happens at company formation, years before a sale. The C-corp election has to be in place at issuance. Owners who converted from an S-corp to a C-corp at some point can sometimes still qualify, but only for the gain accrued after the conversion.

State conformity:

Most states conform to the federal QSBS exclusion, but a few don’t. California, for example, eliminated state-level QSBS treatment in 2013, so a California seller still pays state tax on the excluded gain. Other states like Alabama and Pennsylvania also have their own rules. State conformity should be checked early.

If you’re more than two years from a sale and your company is a C corp under the asset thresholds, this is a conversation worth having now.

5. Consider pre-sale charitable planning

If charitable giving is already part of your goals, donating appreciated shares before a sale can be more tax-efficient than giving cash after the deal closes. This is one of those strategies that usually needs to happen before the sale becomes a fait accompli.

An illustration:

Suppose you plan to give $500,000 to charity around the time of a $5 million sale. If you sell first and donate cash, you pay capital gains tax on the full $5 million sale, then write a check from the after-tax proceeds. The deduction reduces your tax bill, but only on the after-tax amount.

If you donate $500,000 of pre-sale stock to a donor-advised fund, the fund sells the stock when the deal closes and receives the full $500,000 tax-free. You receive a $500,000 charitable deduction and never paid capital gains tax on the donated portion. The combined effect can save the seller well over $100,000 versus the cash-after-sale approach. Results may vary and may be materially lower depending on limitations and state tax treatment.

6. Get estate and liquidity planning in place

A sale can turn an illiquid business into a large cash balance quickly. If your exit is tied to retirement or a family legacy goal, this planning should happen before the money hits your account.

Mistakes to Avoid

A lot of business owners do not miss because they made one dramatic error, but because they waited too long.

Common problems include locking in the letter of intent before modeling after-tax proceeds, ignoring allocation language, assuming all proceeds are capital gain, and overlooking state taxes.

The practical question is not “How do I pay no tax when I sell my business?” The better question is: What structure, timing, and planning steps could help me keep more of what I built?

That framing leads to better decisions.

The Bottom Line for Business Owners

Selling a business is often a once-in-a-lifetime liquidity event. It can fund retirement, create generational wealth, or support future giving. It can also trigger a bigger tax bill than expected if the structure isn’t thought through carefully.

The biggest planning wins happen years and months before closing.

If you want help fitting a business sale into your broader financial picture, SKY Investment Group is here to help.