Amortization: Definition and How It Works in Tax Planning

Amortization is the process of deducting the cost of an intangible asset — such as goodwill, patents, customer lists, or startup costs — over a fixed period rather than in the year the asset is acquired or the cost is incurred. It is the intangible-asset counterpart to depreciation, which covers tangible property like equipment and buildings. Both methods reduce tax basis by the amount deducted each year, and both are subject to recapture as ordinary income under IRC §1245 when the asset is sold for more than its adjusted basis. The primary statutory frameworks governing amortization are IRC §197 (intangibles acquired in business acquisitions), IRC §195 (startup costs), IRC §§248 and 709 (organizational costs for corporations and partnerships), and the former IRC §174 / new §174A (research and experimental expenditures).

Section 197 Intangibles: The Core Amortization Provision

IRC §197, enacted in 1993, requires that intangible assets acquired in connection with the acquisition of a trade or business (or a substantial portion of one) be amortized over a 15-year straight-line period, beginning in the month the intangible is acquired and continuing for 180 months — regardless of the asset's actual economic useful life. A patent with a ten-year legal life and goodwill with an indefinite life are both amortized over 15 years under §197.

Qualifying §197 intangibles include:

Goodwill and going concern value
Customer-based intangibles (customer lists, subscription relationships, patient lists)
Supplier-based intangibles
Workforce in place
Patents, copyrights, formulas, processes, designs, and know-how
Licenses, permits, and government-granted authorizations
Trademarks and trade names
Covenants not to compete entered into in connection with a business acquisition
Franchises, licenses, and contracts with terms exceeding one year

Intangibles excluded from §197 — and governed by separate rules — include self-created intangibles (those not acquired from a third party), interests in corporations and partnerships, financial instruments, computer software eligible for §167(f) amortization, and separately acquired interests in films, sound recordings, books, and similar items.

Anti-churning rules under IRC §197(f)(9) prevent taxpayers from converting pre-1993 non-depreciable goodwill into amortizable §197 property through related-party transactions or other arrangements designed to trigger the 15-year clock.

Section 195: Startup Costs

Startup costs are amounts a taxpayer pays or incurs before a business begins operation — investigatory expenses to evaluate a potential business, preopening advertising, employee training before opening, and similar costs. Under IRC §195, a taxpayer may elect to deduct up to $5,000 of startup costs in the year business commences (reduced dollar-for-dollar once total startup costs exceed $50,000, phasing out entirely at $55,000). Any remaining startup costs are amortized ratably over 180 months beginning in the month business commences. If the business never opens, startup costs are deducted as a loss under IRC §165 when the effort is abandoned.

Section 248 / Section 709: Organizational Costs

Corporate organizational costs (IRC §248) and partnership organizational costs (IRC §709) follow the same structure as §195: a $5,000 first-year deduction (with the same $50,000 phase-out) and a 180-month amortization period for remaining costs. Qualifying organizational costs include legal fees for drafting articles of incorporation or a partnership agreement, accounting fees incurred during formation, and state registration and filing fees. Costs related to issuing stock, syndicating partnership interests, or acquiring assets are not organizational costs and must be capitalized under other rules.

R&D Amortization Under the Former IRC §174

The Tax Cuts and Jobs Act amended IRC §174 to require that domestic research and experimental (R&E) expenditures be capitalized and amortized over five years (fifteen years for foreign research), effective for tax years beginning after December 31, 2021. This eliminated the prior immediate deduction and produced significant unexpected tax bills for technology, biotech, software, and engineering companies from 2022 through 2024.

The One Big Beautiful Bill Act (OBBBA, enacted July 4, 2025) created IRC §174A, restoring immediate expensing for domestic R&E costs in tax years beginning after December 31, 2024. Foreign R&E costs remain on the fifteen-year amortization schedule. Clients with domestic R&E costs incurred in 2022–2024 that were placed on five-year schedules continue to deduct the remaining amortization through the end of those periods.

How Amortization Reduces Tax Basis

Each year's amortization deduction reduces the intangible asset's adjusted basis — the same mechanism that depreciation applies to tangible property. Under IRC §1016(a)(2), basis must be reduced by amortization that was allowable, even if the taxpayer failed to actually claim the deduction. A taxpayer who forgets to amortize a covenant not to compete for three years still carries a basis three years' worth of amortization lower than original cost when the covenant is later sold.

Recapture on Sale of Amortized Intangibles

When a §197 intangible (or any other amortizable asset) is sold for more than its adjusted basis, the gain attributable to prior amortization deductions is recaptured as ordinary income under IRC §1245 — not as capital gain, regardless of how long the asset was held. For example: a client allocates $300,000 of an acquisition price to customer lists, amortizes $60,000 over four years (adjusted basis = $240,000), then sells those lists for $275,000. The entire $35,000 gain is §1245 ordinary income. See Depreciation Recapture for the full mechanics and Form 4797 reporting.

Related Terms

Depreciation — the parallel cost-recovery method for tangible property (buildings, equipment, vehicles) under IRC §§167 and 168; amortization applies the same logic to intangibles
MACRS — the tax depreciation system for tangible property; §197 amortization follows a separate, fixed 15-year straight-line schedule rather than MACRS recovery classes
Tax Basis — how amortization reduces adjusted basis year by year and its effect on gain calculation at sale
Depreciation Recapture — IRC §1245 applies to amortized §197 intangibles; all gain up to prior amortization is taxed as ordinary income
Section 174A — the OBBBA provision that restored immediate expensing for domestic R&D costs starting in 2025, replacing the five-year amortization requirement under the former §174

How CPAs Use Amortization in Practice

Amortization surfaces in three recurring advisory contexts. Business acquisition planning: when a client acquires a business, the purchase price is allocated among assets using the residual method under IRC §1060 and Treas. Reg. §1.338-6. Amounts allocated to §197 intangibles — including goodwill — generate 15-year straight-line amortization deductions, while amounts allocated to tangible property may qualify for bonus depreciation or §179 immediate expensing. Allocation decisions between tangible and intangible categories drive the magnitude and timing of deductions over the entire 15-year period. Startup planning: clients launching new businesses often expect to fully deduct preopening costs in year one. CPAs must identify which costs qualify as §195 startup costs, apply the $50,000 phase-out, and establish a 180-month amortization schedule for any amount above the $5,000 cap. Sale and exit planning: when a client sells a business that previously acquired goodwill or other §197 intangibles, CPAs compute cumulative amortization, the resulting adjusted basis, and the §1245 recapture exposure — which is ordinary income regardless of holding period, and must be disclosed to the client before any sale agreement is signed.

Arvori helps CPAs track amortization schedules across acquisition portfolios and flag recapture exposure before a client enters a sale process. See how Arvori supports business acquisition tax planning.