External resource

FASB Interpretation 48 — historical uncertain-tax-position summary

FASB historical summary of the two step recognition and measurement architecture for uncertain tax positions now codified in Topic 740.

Authority and currency

About this authority

Publisher: Financial Accounting Foundation
Standing: Primary authority
Version: Historical Interpretation 48 summary
Relevant parts: Recognition, measurement, derecognition, interest, penalties, and disclosure summary
Currency: superseded · checked Aug 8, 2026

Open the primary source

The summary separates recognition on technical merits from measurement using the cumulative probability of ultimate settlement. A valuation allowance is not a substitute for that model. Current Topic 740 controls live conclusions.