Foreign Subsidiaries: Currency Translation and CTA

Introduction

Coca-Cola sells its drinks in more than 200 countries, and in 2024 the strength of the US dollar against currencies such as the Argentine peso, Nigerian naira, Zimbabwean dollar, Turkish lira and Japanese yen reduced its reported revenue by 5%. The effect did not stop at the income statement. Translating its foreign subsidiaries' assets and liabilities into dollars at weaker exchange rates cut their dollar value, and Coca-Cola recorded $2.9 billion of translation losses in other comprehensive income for the year. By the end of 2024, its accumulated translation losses stood at $15.6 billion, the largest component of its accumulated other comprehensive loss.

Every company with foreign operations faces the same arithmetic. Its subsidiaries keep their books in their own currencies; the parent reports in its own. Translating one into the other produces gains and losses that reflect exchange rates rather than operations, and the accounting has to decide where to put them.

The starting point under Accounting Standards Codification (ASC) 830, Foreign Currency Matters, is each entity's functional currency, the currency of the primary economic environment in which it operates. A French subsidiary that sells in euros, pays its staff and suppliers in euros and borrows in euros has the euro as its functional currency. A Mexican assembly plant that sells everything to its US parent, priced in dollars, and is financed by the parent may have the dollar as its functional currency, even though it pays local wages in pesos.

Functional currency

The currency of the primary economic environment in which an entity operates, normally the one in which it mainly generates and spends cash. Under ASC 830, it is determined from indicators such as the currency of the entity's sales prices and markets, its costs, its financing and the extent of its transactions with the parent.

The functional currency decides which of two processes applies. If a subsidiary's books are kept in a currency other than its functional currency, they are first remeasured into the functional currency, with the differences in net income. If the functional currency differs from the parent's reporting currency, the statements are then translated into the reporting currency, with the differences in other comprehensive income.

Translation from a foreign functional currency uses the current rate method. Assets and liabilities are translated at the exchange rate at the balance sheet date; revenue, expenses, gains and losses at the rates on the dates they occurred, in practice an average rate for the period; and equity contributed by the parent at historical rates. Because these rates differ, the translated balance sheet does not balance on its own, and the difference is the period's translation adjustment, recorded in other comprehensive income and accumulated in equity as the cumulative translation adjustment (CTA).

Cumulative translation adjustment

The component of accumulated other comprehensive income that holds the gains and losses from translating foreign subsidiaries' financial statements from their functional currencies into the parent's reporting currency, together with related hedges and long-term intercompany balances. It is reclassified into net income only when the foreign entity is sold or substantially liquidated.

Suppose a European subsidiary has net assets of €1,000, unchanged during a year in which the euro falls from $1.10 to $1.00. Its net assets translate to $1,100 at the start of the year and $1,000 at the end, a $100 translation loss in other comprehensive income, although nothing has changed in euros. If the subsidiary had earned €200 during the year, its income would be translated at the average rate, about $1.05, adding $210 to consolidated net income, and its year-end net assets of €1,200 would translate at $1.00, to $1,200. The translation loss would then be $110: the $100 on the opening net assets plus $10 on the year's profit, which entered equity at $1.05 and sits on the balance sheet at $1.00.

Remeasurement and Transaction Gains

Monetary items denominated in a currency other than an entity's functional currency, such as a European subsidiary's dollar receivables or a US company's loan in yen, are remeasured at each balance sheet date, with gains and losses in net income. Coca-Cola reports these remeasurement effects in other income, partly offset by an economic hedging program, as its 2024 annual report explains. These transaction gains and losses are real exposures of the business, unlike translation adjustments, which are a consequence of reporting in a different currency.

Long-Term Intercompany Balances and Net Investment Hedges

Two items move through the translation adjustment rather than earnings. Intercompany loans that are effectively part of the parent's long-term investment in a subsidiary, with settlement not planned in the foreseeable future, have their exchange differences recorded in other comprehensive income rather than earnings, an exception to the general treatment of intercompany balances described in intercompany eliminations in consolidation. And companies can hedge their net investments in foreign subsidiaries, with debt in the foreign currency or derivatives, recording the hedge's gains and losses in the translation adjustment, where they offset the translation of the net assets, as described in derivatives and hedge accounting.

Coca-Cola's 2024 translation adjustments show all three effects:

The hedges, mostly about $13.2 billion of debt denominated in foreign currencies, recovered $844 million, a little over a fifth of the $3.9 billion lost on net assets and long-term intercompany balances. A hedge of that kind dampens the swings in equity; it does not remove them.

Changes in Functional Currency

A subsidiary's functional currency changes only when its economic facts change significantly, for example when a business that once sold mainly to its parent builds its own local market. The change is applied prospectively from the date it happens, without restating earlier periods, and translation adjustments already accumulated stay in equity. Changing a functional currency to dress up results is not permitted, but a genuine change can shift future exchange effects from other comprehensive income into earnings, or the reverse.

Translation at the current rate breaks down when a currency loses value rapidly: the subsidiary's fixed assets, translated at ever weaker closing rates, would shrink toward nothing in dollars while its income was translated at somewhat stronger average rates. US generally accepted accounting principles (US GAAP) therefore treat an economy as highly inflationary when its cumulative inflation over three years is around 100% or more, and require subsidiaries there to use the parent's reporting currency as their functional currency. Their local-currency items are then remeasured into dollars, with the gains and losses in net income rather than other comprehensive income.

The profession tracks which countries qualify. The Center for Audit Quality's International Practices Task Force publishes regular inflation monitoring documents, and its lists for 2025 include economies such as Argentina and Türkiye among those with three-year cumulative inflation above 100%. For companies with large operations in such countries, currency swings that would otherwise sit in other comprehensive income run through earnings instead.

The cumulative translation adjustment for a foreign entity stays in equity until the parent sells it, or substantially liquidates it. At that point the accumulated amount is reclassified into net income as part of the gain or loss on disposal. A company exiting a country whose currency has fallen sharply over many years can therefore report a large loss on the exit, even if the sale price matches the business's local-currency book value. A loss of control counts as a sale even if the parent keeps a minority stake, while selling part of a subsidiary and keeping control releases nothing. Coca-Cola reclassified $103 million of accumulated translation losses into net income in 2024.

For operating analysis, the key distinction is between growth in local currency and growth after translation. Companies with large foreign operations, Coca-Cola among them, explain how much of a change in revenue came from volume, price and mix, acquisitions and divestitures, and currency. Bankers use those disclosures, or calculate growth at constant exchange rates themselves, to separate the business's performance from the exchange rate. Segment disclosures, described in segment reporting, show where the exposure sits.

For valuation, a discounted cash flow can be built in the subsidiary's own currency and converted at forward exchange rates, or built in dollars with dollar inflation and discount rates; mixing the two produces errors. The translation reserve itself does not enter valuation; the economics it reflects are captured in the forecast. What matters is the forecast in the currency the cash will actually be earned in, and the exchange rates at which it will be converted.