A US parent reports earnings up 8%, but half the gain came from a weaker dollar translating the euro subsidiary. Whenever currency, inflation, accounting changes, or non-cash gains intrude, "reported" and "real" diverge. This lesson covers the adjustments that separate signal from noise.
A multinational consolidates foreign subsidiaries into the parent's reporting currency. The first decision is the subsidiary's functional currency, defined under ASC 830 as the currency of the primary economic environment in which the entity operates and generates and uses cash. Cues include the currency of sales prices, labor, and financing.
DECISION: Local functional currency uses the current rate method (translation). Parent-currency functional uses the temporal method (remeasurement). Highly inflationary economies (cumulative inflation greater than 100% over three years) force the temporal method regardless.
Current rate method (translation). Assets and liabilities at the current (year-end) rate, revenues and expenses at the weighted-average rate, equity at historical rates. The plug is the Cumulative Translation Adjustment (CTA), parked in other comprehensive income (OCI), not net income.
Common mistakes
- Mixing up translation and remeasurement. Current rate method puts the FX adjustment in OCI as CTA; temporal method runs it through net income. Sending CTA to NI or remeasurement to OCI is a classic distractor.
- Restating prior periods for a change in estimate. Estimates apply prospectively only. Restate only for principle changes and error corrections.
- Treating a change in depreciation method as a principle change. ASC 250-10-45-18 classifies it as a change in estimate, applied prospectively. Retrospective restatement is wrong.
Bottom line
- Functional currency is the currency of the subsidiary's primary economic environment. It selects translation (current rate, CTA in OCI) versus remeasurement (temporal, gain or loss in NI).
- Translation preserves local margins; remeasurement distorts them because COGS and depreciation run at historical rates.
- Inflation inflates revenue against historical-cost depreciation and old inventory layers, making margins, turnover, and ROA look stronger and leverage look safer than reality.
- Principle changes = retrospective; estimate changes = prospective; error corrections = prior-period restatement.
Exam shortcut
When the question names the subsidiary's local currency as functional, choose current rate translation with CTA to OCI. When it names the parent's reporting currency as functional, choose temporal method with the gain or loss in net income.
The full lesson (about 1,907 words, 13 min read) adds 2 worked examples, all 6 common mistakes, a self-check, free in the app.
Learning objectives
- 2A4
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