What factors determine functional currency and why does it matter for CFA Level II?

Question

AcadiFi · Accepted Answer

Functional currency is the currency of the primary economic environment in which a subsidiary operates. IAS 21 and ASC 830 list several indicators:

**Primary Indicators**
1. **Sales prices** -- Which currency mainly influences selling prices?
2. **Cost structure** -- Which currency drives labor, materials, and operating costs?
3. **Financing activities** -- In which currency are debts and equity raised?

**Secondary Indicators**
- Volume of intercompany transactions with the parent
- Whether cash flows from operations can directly service parent-currency obligations
- Degree of autonomy from the parent

| Indicator | Points to Local Currency | Points to Parent Currency |
|---|---|---|
| Revenue denominated in | Local currency | Parent currency |
| Operating costs | Sourced locally | Imported from parent country |
| Financing | Local debt markets | Parent guarantees / loans |
| Autonomy | High -- independent ops | Low -- extension of parent |

**Why it matters:** If the functional currency equals the local currency, you use the **current rate method** (all assets/liabilities at closing rate, equity at historical, CTA in OCI). If the functional currency equals the parent's currency, you use the **temporal method** (monetary at current, non-monetary at historical, gains/losses in income).

Misidentifying the functional currency can swing reported earnings significantly because temporal method remeasurement gains/losses hit the income statement directly, while current rate translation adjustments bypass income entirely via OCI.

What factors determine functional currency and why does it matter for CFA Level II?

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