Foreign Currency Translation Notes: ASC 830, CTA and Worked Examples [FAR & BAR Guide]

Foreign currency translation is the process of converting a foreign subsidiary’s financial statements from its functional currency into the parent’s reporting currency. It applies when a subsidiary keeps its books in a local currency that differs from the reporting currency. Use the current rate for assets and liabilities, the average rate for income statement items, and report the resulting difference, the cumulative translation adjustment (CTA), in other comprehensive income, not in net income. For more CPA study notes, see the CPA notes hub.

A note on exam scope: Under the AICPA Blueprints effective 1 January 2026, full translation of a foreign subsidiary is a BAR Area II topic (35 to 45 percent), not a FAR topic. In contrast, FAR Area I, at 30 to 40 percent, tests foreign currency transaction gains and losses. ASC 830 is one framework: FAR tests transactions, BAR extends it to full translation.

What foreign currency translation means under ASC 830

Foreign currency translation converts a foreign subsidiary’s financial statements from its functional currency into the reporting currency. Assets and liabilities use the current rate, income uses the average rate, and the difference, called the cumulative translation adjustment, goes to other comprehensive income, not net income.

The functional currency (ASC 830-10-45-2) is the currency of the primary economic environment, normally where the entity generates and spends cash. Translation applies when the functional currency is the local currency. Remeasurement applies when the books are not kept in the functional currency, and ASC 830-10-45-17 requires remeasurement first, then translation.

Functional currency: the decision that comes first

ASC 830-10-45-3 warns that no single test settles the functional currency, and ASC 830-10-45-6 calls it a matter of fact, needing management judgment when the facts conflict. Once chosen, keep it consistent unless a significant change clearly shows it has changed, and do not restate prior statements (ASC 830-10-45-7).

ASC 830-10-55-5 lists six indicators: cash flow, sales price, sales market, expenses, financing, and intra-entity transactions and arrangements. In general, local indicators point to the local currency; parent-driven ones point to the dollar. A self-contained operation normally uses the local currency; a direct extension of the parent normally uses the parent currency (ASC 830-10-45-4).

Foreign currency translation: the current rate method

When the functional currency is the local currency, ASC 830-30-45-3 requires the current rate method:

Item	Rate used	Where the difference goes
Assets and liabilities	Current rate at year end	Other comprehensive income
Revenues, expenses, gains, and losses	Average rate in practice	Other comprehensive income
Equity, other than retained earnings	Historical rate at each transaction date	Other comprehensive income

The rules permit averages because daily translation of every income item is impractical (ASC 830-30-45-5, ASC 830-10-55-10), so the weighted average rate is the standard exam treatment. In addition, other equity stays at historical rates (ASC 830-10-45-18). Finally, the CTA goes to other comprehensive income, in AOCI (ASC 830-30-45-12); on sale or liquidation it moves to the gain or loss on sale (ASC 830-30-40-1).

Worked example 1: foreign currency translation and the CTA

In my own example, a US parent owns a euro (EUR) subsidiary that reports in US dollars (USD). There are no dividends and no capital changes.

Given facts:

• Opening equity: common stock EUR 120,000 + retained earnings EUR 80,000 = EUR 200,000.
• Historical rate for the stock and opening retained earnings: $1.00 per EUR.
• Net income for 2026: EUR 50,000. Weighted average rate for 2026: $1.10 per EUR.
• 31 December 2026 balance sheet: assets EUR 400,000, liabilities EUR 150,000.
• Current rate at 31 December 2026: $1.20 per EUR.

First, translate the balance sheet at the current rate.

• Assets: EUR 400,000 x $1.20 = $480,000.
• Liabilities: EUR 150,000 x $1.20 = $180,000.
• Translated net assets: $480,000 – $180,000 = $300,000.

Second, translate equity at historical and average rates.

• Common stock: EUR 120,000 x $1.00 = $120,000.
• Opening retained earnings: EUR 80,000 x $1.00 = $80,000.
• Net income: EUR 50,000 x $1.10 = $55,000.
• Translated equity before the CTA: $120,000 + $80,000 + $55,000 = $255,000.

Finally, find the CTA as the plug figure.

• CTA = net assets – equity before the CTA.
• CTA = $300,000 – $255,000 = $45,000.

As a result, the CTA is a $45,000 credit to other comprehensive income, accumulated in AOCI. Translated equity after the CTA is $255,000 + $45,000 = $300,000, which equals translated net assets.

Cross-check: EUR 200,000 x ($1.20 – $1.00) = $40,000, plus EUR 50,000 x ($1.20 – $1.10) = $5,000, totals $45,000.

Remeasurement and the temporal method

When the functional currency is the parent currency but the entity keeps its books in the local currency, remeasure the statements into the dollar using the temporal method. ASC 830-10-45-17 aims for the same result as if the books had been kept in the functional currency.

Item	Rate used	Where the difference goes
Monetary assets and liabilities	Current rate	Net income
Nonmonetary items (inventory, PP&E, goodwill, intangibles, prepaid expenses, stock)	Historical rate	Net income
Cost of goods sold, depreciation	Historical rate of the related item	Net income
Other income statement items	Average rate as appropriate	Net income

However, the decisive difference from translation is the destination: ASC 830-10-45-17 requires entities to recognize remeasurement gains and losses on monetary items not denominated in the functional currency currently in income. The gain or loss hits net income, never other comprehensive income.

Deloitte DART Example 4-7: a Mexican subsidiary with a US dollar functional currency carries inventory of MXN 500,000 at $50,000 (MXN 1 = $0.10). Net realizable value is $30,000 (MXN 600,000 at MXN 1 = $0.05), so the subsidiary recognizes a $20,000 adjustment, though pesos required no write-down.

Worked example 2: remeasurement gain on monetary items

In my own example, a subsidiary keeps its books in euros (EUR), but its functional currency is the US dollar (USD), so remeasure its statements under the temporal method.

Given facts:

• Monetary assets: EUR 60,000.
• Monetary liabilities: EUR 40,000.
• Net monetary assets: EUR 60,000 – EUR 40,000 = EUR 20,000.
• Exchange rate at the start of the year: $1.00 per EUR.
• Exchange rate at 31 December: $1.20 per EUR.

First, remeasure the monetary assets.

• Monetary assets: EUR 60,000 x $1.20 = $72,000.
• At the start rate: EUR 60,000 x $1.00 = $60,000.
• Gain: $72,000 – $60,000 = $12,000.

Second, remeasure the monetary liabilities.

• Monetary liabilities: EUR 40,000 x $1.20 = $48,000.
• At the start rate: EUR 40,000 x $1.00 = $40,000.
• Loss: $48,000 – $40,000 = $8,000.

Finally, work out the net remeasurement gain.

• Net remeasurement gain = $12,000 gain – $8,000 loss = $4,000.
• Cross-check on net monetary assets: EUR 20,000 x ($1.20 – $1.00) = $4,000.

Therefore, the $4,000 net remeasurement gain goes to net income. The subsidiary holds more monetary assets than monetary liabilities in a currency that strengthened, so its net monetary position gained value.

Highly inflationary economies

ASC 830-10-45-11 defines a highly inflationary economy as one with cumulative inflation of approximately 100 percent or more over a 3-year period. Instead of foreign currency translation, remeasure the statements as if the functional currency were the reporting currency. Above 100 percent over 3 years, the economy is highly inflationary in all instances (ASC 830-10-45-12). Finally, when an economy becomes highly inflationary, prior translation adjustments stay in equity (ASC 830-10-45-10).

Foreign currency transactions: the FAR-tested piece

FAR Area I tests foreign currency transactions, denominated in a currency other than the functional currency. Record a transaction first at the spot rate on the transaction date, and remeasure monetary items at each balance sheet date, with gains and losses to net income.

A secondary illustration: a US entity buys inventory for EUR 100,000 on 1 March at $1.10 per euro, so inventory and the payable are $110,000. At 31 December the rate is $1.08, so the payable is $108,000 and the entity recognizes a $2,000 gain. At settlement on 15 February the rate is $1.12, so the entity pays $112,000 against $108,000, and recognizes a $4,000 loss.

Finally, FAR runs 4 hours: 50 multiple choice questions and 7 simulations, split 50/50.

Exam traps: five mistakes that cost points

1. Sending the CTA to net income: translation adjustments go to other comprehensive income, in AOCI. In contrast, only remeasurement gains and losses go to net income.
2. Using the current rate for everything in foreign currency translation: assets and liabilities use the current rate, but equity uses historical rates and income uses the average rate.
3. Confusing translation with remeasurement: if the functional currency is the dollar and the books are in the local currency, remeasure.
4. Treating nonmonetary items as monetary: inventory, PP&E, goodwill, and prepaid expenses stay at historical rates.
5. Forgetting the highly inflationary trigger: cumulative inflation of about 100 percent or more over 3 years switches the entity to remeasurement.

One-page revision box

Question	Answer
Functional currency	Primary economic environment (ASC 830-10-45-2)
Functional currency is local	Current rate method; CTA to other comprehensive income
Functional currency is the dollar	Temporal method; gain or loss to net income
Assets and liabilities	Current rate at the balance sheet date
Income statement	Rate at recognition date; weighted average rate in practice
Equity	Historical rates
Monetary items	Current rate; gain or loss to net income
Nonmonetary items	Historical rates
CTA destination	Other comprehensive income, in AOCI
Highly inflationary	About 100 percent or more over 3 years; remeasure as if the reporting currency were functional
Exam placement	FAR Area I tests foreign currency transactions; full foreign currency translation is BAR Area II

Work both examples from scratch: plug the CTA, check it against the rate movements, then remeasure a net monetary position. For more CPA study notes, return to the CPA notes hub.