What is goodwill? Definition, formula and example
This is for buyers and sellers who see "goodwill" in a letter of intent or a tax form and want to know what it means. By the end you will know the definition, the formula, a worked example, and the mistakes that cost people money.
The definition in plain words
Goodwill is the value of a business that you cannot point to on a shelf. It is the price of the name, the reviews, the trained team, the phone that keeps ringing and the customers who come back.
When you buy a profitable company, you usually pay more than its trucks, tools and stock are worth. You pay for the profit those things produce together. The extra amount is goodwill.
The IRS puts it in the last of seven asset classes. Its Form 8594 instructions say Class VII assets are goodwill and going concern value. Going concern value is the extra worth of a business that is already up and running.
The formula
Goodwill is a leftover number. You work it out last.
Goodwill = purchase price − fair value of tangible assets − fair value of other named intangible assets
Tangible assets are things like cash, receivables, inventory, equipment and vehicles. Named intangible assets are things you can value on their own, such as a customer list, a trade name, software or a non-compete.
This is called the residual method. The price is spread across the asset classes in order. Whatever is left falls into goodwill. That is why the split matters so much, and why it is part of purchase price allocation.
If the price is lower than the fair value of the assets, there is no goodwill. That is rare in a healthy, profitable small business.
Worked example
Here is an illustrative HVAC company bought in an asset sale. The numbers are made up but add up.
| Line | Fair value |
|---|---|
| Purchase price | $2,000,000 |
| Inventory | $50,000 |
| Equipment and tools | $250,000 |
| Vehicles | $200,000 |
| Customer list and service agreements | $200,000 |
| Trade name | $60,000 |
| Non-compete | $40,000 |
| Total named assets | $800,000 |
| Goodwill | $1,200,000 |
Goodwill = $2,000,000 − $800,000 = $1,200,000.
For tax, goodwill is a Section 197 intangible. The Treasury rule at 26 CFR 1.197-2 says it is deducted evenly over 15 years. In this example, that is $1,200,000 ÷ 15 = $80,000 a year. The customer list, trade name and non-compete follow the same 15-year rule.
On the books, the rules are different. PwC's guide to the private company option explains that private companies may write goodwill off over ten years or less. Public companies do not write it off. They test it for loss in value instead.
Where goodwill shows up in a deal
The price. Most of the price of a service business is goodwill. A buyer paying four times profit is mostly paying for future profit, not for used trucks.
The asset split. In an asset sale, buyer and seller agree how the price is split across the asset classes. Both then report it to the IRS on Form 8594. The two forms should match.
Taxes on both sides. The buyer gets the 15-year deduction. The seller pays tax on what each asset class brings in, and the rates can differ by class. So the buyer and seller often want a different split. This is a normal point to negotiate, with a CPA on each side.
Stock deals. In a stock sale, the buyer usually takes over the company's old tax basis. That often means no new goodwill to deduct. Ask a CPA, as there are exceptions.
Financing. Lenders look at what backs the loan. A deal that is mostly goodwill has little hard collateral. That is one reason lenders focus on cash flow and often ask for a seller note or more buyer cash.
Common mistakes
Treating goodwill as safe. Goodwill is only worth something if the profit keeps coming. If the owner was the reason customers stayed, much of that goodwill can leave with the owner. Buyers should check how much depends on one person.
Ignoring the split until closing. Many buyers find the asset split comes up in the last week, when there is no time to think. Agree the main lines in the letter of intent, and get tax advice early.
Forgetting personal goodwill. Some value can belong to the owner as a person, such as their name or their own ties with clients. Whether that counts as the company's or the owner's is a tax and legal question. Talk to a lawyer and a CPA.
Mixing book and tax rules. The 15-year tax rule and the ten-year book option are separate. Your tax return and your financial statements can show different numbers for the same goodwill.
If you are buying or selling and want help reading the numbers, you can book a free first call.
Questions people ask
What is goodwill in simple terms?
Goodwill is the part of a business price paid above the fair value of all the assets you can name. It stands for reputation, a trained team and loyal customers.
How do you calculate goodwill?
Take the purchase price. Subtract the fair value of the tangible assets and of the named intangible assets, such as a customer list or trade name. What is left is goodwill.
Can a buyer deduct goodwill on taxes?
In an asset purchase, usually yes. Under Section 197, goodwill is deducted evenly over 15 years. In a stock purchase, there is often no new goodwill to deduct. Ask a CPA about your deal.
Why is goodwill so large in small business sales?
Service businesses own few hard assets compared with the profit they make. Buyers pay for that profit, so most of the price ends up as goodwill.
Is goodwill the same as an intangible asset?
Goodwill is one kind of intangible asset, but not the only one. Customer lists, trade names and non-competes are also intangibles. They are valued on their own, and goodwill is what is left over.
Sources
- irs.gov — https://www.irs.gov/pub/irs-pdf/i8594.pdf
- law.cornell.edu — https://www.law.cornell.edu/cfr/text/26/1.197-2
- viewpoint.pwc.com — https://viewpoint.pwc.com/us/en/homepage-external-/ib202101.html
Pober, M. (2026). What is goodwill? Definition, formula and example. Acquisitions.com. https://acquisitions.com/blog/what-is-goodwill/
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