Amortization of Goodwill: GAAP, Private Company, and Section 197 Rules

Goodwill gets two very different treatments depending on which set of books you’re looking at. Under U.S. GAAP, public companies don’t amortize goodwill at all — they test it for impairment each year and write it down only when its value falls. Private companies can elect to amortize goodwill on a straight-line basis over up to ten years. For federal income tax purposes, acquired goodwill is amortized straight-line over 15 years under Section 197 of the Internal Revenue Code, regardless of what the financial statements show. The amortization of goodwill therefore lives in three parallel regimes, and knowing which one applies to a given entity and a given transaction is where the practical work sits.

Where Goodwill Comes From

Goodwill arises when one company buys another for more than the fair value of the target’s identifiable net assets. You take the purchase price, subtract the fair value of everything you can point to — equipment, inventory, receivables, customer contracts, patents, assumed liabilities — and whatever is left over is recorded as goodwill. Pay $100 million for a company whose net identifiable assets are worth $75 million, and the remaining $25 million is goodwill.

That residual captures the drivers of the premium: reputation, assembled workforce, expected synergies, market position, and everything else that doesn’t qualify as a separately identifiable intangible. Goodwill can only arise through an acquisition. Internally generated goodwill doesn’t go on the balance sheet, and as covered below, it doesn’t qualify for tax amortization either.

GAAP: Public Companies Don’t Amortize Goodwill

For financial reporting, goodwill is an indefinite-lived intangible asset under ASC 350. Public companies don’t amortize it over any fixed period. Goodwill sits on the balance sheet at its original recorded amount until and unless an impairment test shows the asset has lost value. That test happens at least once a year.

When a company recognizes an impairment loss, it records a non-cash charge on the income statement that reduces both reported earnings and the carrying amount of goodwill. The write-down is permanent. GAAP prohibits reversing a goodwill impairment in a later period, even if the reporting unit’s value rebounds. Because the charge is non-cash, it’s added back to net income when calculating cash flow from operations.

How the Impairment Test Works

Impairment testing happens at the reporting unit level, typically an operating segment or one level below it. A reporting unit is the lowest organizational tier where management reviews discrete financial results. The process gives companies two paths.

The qualitative assessment is a threshold check. Management looks at macroeconomic trends, industry competition, cost pressures, revenue trajectory, and changes in key personnel or strategy. If the evaluation leads to a conclusion that the reporting unit’s fair value more likely than not exceeds its carrying amount, no further testing is required.

If the qualitative picture raises doubt, or if management prefers to skip the qualitative step, the company moves to the quantitative test. Under current GAAP that test is a single step: compare the reporting unit’s fair value to its carrying amount, including goodwill. If carrying amount exceeds fair value, the impairment loss equals the difference, capped at the total goodwill allocated to that reporting unit. The loss appears as a separate line item on the income statement before income from continuing operations.

The Private Company Alternative: 10-Year Amortization

Private companies and not-for-profit entities have a simpler option. Under FASB Accounting Standards Update 2014-02, these organizations can elect to amortize goodwill on a straight-line basis over ten years, or a shorter period if the entity can demonstrate a more appropriate useful life.¹ The cumulative amortization period cannot exceed ten years even if the useful life estimate is later revised.

Electing entities also get a break on impairment testing. Instead of an annual test, they only check for impairment when a triggering event occurs, such as losing a major customer, a significant market shift, or a sustained drop in financial performance.¹ The election applies to all goodwill on the entity’s books, not selectively to individual acquisitions. Public companies do not have this option; as of 2026 they remain under the impairment-only model.

Tax Amortization: The 15-Year Section 197 Rule

Federal tax law ignores the GAAP impairment approach entirely. Under Section 197 of the Internal Revenue Code, acquired goodwill is amortized ratably over 15 years starting in the month of acquisition.² The deduction equals the goodwill’s adjusted basis divided by 180 months, multiplied by the number of months held during the tax year. No acceleration, no impairment shortcut, no alternative period. The 15-year timeline applies regardless of the asset’s actual useful life or anything happening on the financial statements.

Take $18 million of goodwill acquired on January 1. That produces a $1.2 million annual deduction for 15 consecutive years. Acquire the same goodwill on July 1 and the first-year deduction covers only six months ($600,000), with a partial deduction in year 16 to pick up the remaining six months.

The deduction is reported on IRS Form 4562, Depreciation and Amortization.³ Section 197 covers more than goodwill. Customer lists, covenants not to compete, trademarks, trade names, going concern value, governmental licenses, and several other categories of acquired intangibles all follow the same 15-year straight-line schedule.²

Self-Created Goodwill Doesn’t Qualify

Section 197 amortization only applies to goodwill and intangibles that are acquired. A business that builds its own reputation, customer base, and brand value from scratch cannot amortize any of that self-created goodwill for tax purposes. The tax deduction exists specifically because an acquirer paid real money for the intangible in an arm’s-length transaction. A narrow exception covers intangibles created as part of a broader acquisition of a trade or business, such as a covenant not to compete entered into as part of a business purchase.²

Deal Structure Controls Whether You Get the Deduction

Whether the buyer gets any Section 197 deduction at all depends on how the acquisition is structured. This is one of the most consequential tax-planning decisions in any deal.

Asset Purchases

In an asset purchase, the buyer acquires the target’s individual assets and assumes specified liabilities. The purchase price is allocated among those assets under Section 1060, which uses a residual method: after allocating value to tangible assets and identifiable intangibles, whatever remains is assigned to goodwill.⁴ The buyer takes a fair-market-value basis in every asset, including goodwill, and the full amount of allocated goodwill is amortizable over 15 years.

Stock Purchases

In a straight stock purchase, the buyer acquires the target’s shares rather than its underlying assets. Outside basis in the stock equals the purchase price, but the target company’s internal asset bases carry over unchanged. No step-up, no new goodwill, no Section 197 deduction. For financial reporting purposes the acquirer still records goodwill under ASC 805, but on the tax return there is nothing new to amortize.

Section 338 Elections

Section 338 offers a workaround. A buyer that makes a qualified stock purchase, acquiring at least 80 percent of a target corporation’s stock, can elect to treat the transaction as if the target sold all its assets and a new corporation bought them at fair market value.⁵ The most commonly used version for domestic deals, the Section 338(h)(10) election, requires both buyer and seller to agree. When made, the buyer gets a stepped-up basis in all the target’s assets, including any goodwill, and can amortize that goodwill over 15 years just as in an asset purchase.

The trade-off is that the seller recognizes gain on the deemed asset sale, which may push the seller’s tax bill higher. Whether a 338(h)(10) election makes economic sense depends on the relative tax positions of buyer and seller, and the purchase price often reflects a negotiated allocation of the tax cost.

You’re Locked Into the 15-Year Schedule

Section 197 contains a disposition rule that catches many buyers off guard. If you dispose of one Section 197 intangible from an acquisition, say a customer list becomes worthless, but you still hold other Section 197 intangibles from the same deal, you cannot recognize a loss on the disposed asset. Instead, the remaining unamortized basis of the disposed intangible gets reallocated to the intangibles you still hold, and you continue amortizing the combined amount over the original 15-year schedule.²

The only way to claim a loss on a Section 197 intangible is to dispose of all intangibles acquired in the same transaction. As long as you retain even one, and goodwill is almost always the last to go, you’re locked into the reallocation. Covenants not to compete face an even stricter rule: they cannot be treated as disposed of until the entire business interest connected to the covenant is sold.²

Anti-Churning Rules Block Related-Party Deals

Section 197 also blocks amortization in certain related-party transactions. The anti-churning provisions prevent taxpayers from transferring goodwill between related persons to manufacture a fresh amortization deduction. They apply when goodwill or going concern value was held by the taxpayer, a related person, or the same user before Section 197’s enactment, and the transfer doesn’t genuinely change who benefits from the intangible.² “Related person” for these purposes uses a 20-percent ownership threshold rather than the 50-percent standard elsewhere in the code. Any acquisition from a family member or commonly controlled business warrants a close look at these rules before assuming the goodwill will be amortizable.

The Book-Tax Gap Creates Deferred Taxes

Because public companies don’t amortize goodwill for book purposes but do amortize it for tax purposes, the two carrying amounts diverge immediately after an acquisition. Each year’s tax amortization reduces the tax basis while the book basis stays flat, absent impairment. That growing gap is a temporary difference under ASC 740 and typically generates a deferred tax liability on the balance sheet. The liability reflects future taxes the company expects to pay when the difference reverses; conceptually, the company has taken a tax deduction it hasn’t yet recognized as a book expense. If a later impairment brings the book basis below the tax basis, the deferred tax liability shrinks or flips to a deferred tax asset.

Stock purchases add a wrinkle. When book goodwill exists but no corresponding tax goodwill was created because there was no asset step-up, ASC 805-740 generally prohibits recording deferred taxes on that “Component 2” excess of book goodwill over tax-deductible goodwill. The book goodwill sits on the balance sheet without an offsetting tax entry, which can surprise preparers seeing it for the first time.

1
Financial Accounting Standards Board. FASB ASU 2014-02 Intangibles Goodwill and Other Topic 350
2
Office of the Law Revision Counsel. 26 USC 197 Amortization of Goodwill and Certain Other Intangibles
3
Internal Revenue Service. About Form 4562 Depreciation and Amortization
4
Office of the Law Revision Counsel. 26 USC 1060 Special Allocation Rules for Certain Asset Acquisitions
5
Office of the Law Revision Counsel. 26 USC 338 Certain Stock Purchases Treated as Asset Acquisitions