Misconception · MIS:legal-life-always-equals-useful-life

Mistaken idea “Legal life always equals useful life”

Mistaken reasoning: This mistake copies a contractual or statutory term into the amortization schedule without considering expected use, renewal, obsolescence, or other limiting evidence.

Updated Aug 21, 2026 Review due Nov 8, 2026

Why this is mistaken

Legal rights can cap or shape useful life, but they do not erase economic and renewal evidence. Require a short life memo before opening the amortization formula.

Where to watch

When this mistake may appear

  • A patent, license, or customer contract supplies both a legal term and a shorter supported expected-use period.
Check your work

Your work may contain this mistake if:

  • The schedule uses the longest printed term without a life memo.