Amortization

Amortization is the accounting practice of spreading the cost of an intangible asset — one without physical form, like a patent, trademark, customer list, or software — across its useful life. Conceptually, amortization is identical to depreciation; the only difference is that depreciation applies to tangible assets (buildings, equipment) and amortization applies to intangible assets. Like depreciation, amortization is a non-cash expense that reduces reported earnings. Not all intangible assets are amortized; goodwill, for example, is tested for impairment rather than amortized.

Types of intangible assets subject to amortization

Intangible assets fall into two categories:

Finite-life assets (amortized):

• Patents (typically 20 years remaining life)
• Copyrights (based on expected usefulness)
• Trademarks (if finite term, e.g., 10 years)
• Customer lists acquired in a business combination
• Software (over expected useful life, often 3-5 years)
• Franchise agreements (over term)

Indefinite-life assets (not amortized, but tested for impairment):

• Goodwill
• Trade names and brands with indefinite useful life
• In-place customer relationships

The distinction is whether the asset has a definable period of usefulness or not.

Calculating amortization

Like depreciation, amortization is calculated as:

Annual amortization = (Asset cost - Residual value) ÷ Useful life in years

Example: A software license costs $1,000,000 and is expected to be useful for 5 years with no residual value. Annual amortization = $1,000,000 ÷ 5 = $200,000 per year

The company records $200,000 of amortization expense each year for 5 years.

Goodwill and the impairment approach

Goodwill — the amount paid above fair value in a business acquisition — is a special case. Under current GAAP, goodwill is not amortized. Instead, it is reviewed annually (or more frequently if triggering events occur) for impairment.

If the fair value of the acquired business falls below the amount paid, goodwill must be written down (impaired). This differs from amortization, which is a mechanical allocation. Impairment is based on economic reality.

Intangible assets acquired in a business combination

When a company acquires another company, it must separate the purchase price into fair-value amounts for each asset and liability. Intangible assets identified as distinct from goodwill — such as customer lists, patents, or trade names — are recorded separately and amortized.

This is where amortization expense can be large. If a company acquires a competitor with a valuable customer base and assigns $500 million to the customer list intangible with a 10-year life, amortization is $50 million per year.

Amortization and EBITDA

EBITDA — Earnings Before Interest, Taxes, Depreciation, and Amortization — is a widely used metric that adds back both depreciation and amortization to net income. The reason: both are non-cash charges.

A company with high amortization expense will have much lower reported earnings but much higher EBITDA. Investors often use EBITDA to compare companies with different asset bases or acquisition histories.

Amortization and cash flow

Like depreciation, amortization is added back in calculating operating cash flow. The company recorded the cash outflow when it acquired the intangible asset (or paid for it in a business combination). The amortization expense each year reduces profit but not cash.

Useful life estimation

The most critical judgment in amortization is estimating useful life. A company might estimate a patent’s remaining life at 15 years, software at 3 years, or a customer list at 7 years. These estimates are disclosed in footnotes.

Changing a useful-life estimate changes future amortization expense significantly and must be disclosed.

Relationship to write-downs and impairments

If the value of an intangible asset declines unexpectedly (e.g., a patent is challenged and invalidated, or a trademark becomes less valuable), the company may write down the asset below its amortized value. This is a one-time impairment charge, separate from regular amortization.

Amortization is mechanical; impairment is discretionary and signals economic loss.

See also