Ind AS 21 prescribes how to include foreign currency transactions and foreign operations in an entity's financial statements, and how to translate financial statements into a presentation currency. Its defining concept — absent from the AS framework — is functional currency: each entity measures its results and position in the currency of the primary economic environment in which it operates, and only then translates into the currency in which it presents its statements. For any business dealing across currencies or with overseas operations, this standard governs how exchange rate movements are reflected.
Objective and scope
The objective is to prescribe how to include foreign currency transactions and foreign operations in the financial statements of an entity and how to translate financial statements into a presentation currency. The principal issues are which exchange rate(s) to use and how to report the effects of changes in exchange rates. The standard applies to accounting for transactions and balances in foreign currencies, translating the results and financial position of foreign operations included in the financial statements, and translating an entity's results and financial position into a presentation currency.
Functional currency — the central concept
Functional currency is the currency of the primary economic environment in which the entity operates — normally the environment in which it primarily generates and expends cash. Factors in determining it include the currency that mainly influences sales prices and the currency of the country whose competitive forces and regulations mainly determine sales prices, and the currency that mainly influences labour, material, and other costs. Once determined, the functional currency is not changed unless there is a change in the underlying transactions and conditions.
Presentation currency is the currency in which the financial statements are presented, which may differ from the functional currency (for example, an Indian subsidiary of a foreign group may have the rupee as its functional currency but present in another currency for group reporting, or vice versa). The functional-versus-presentation currency distinction is the key structural difference from AS 11, which uses the single notion of "reporting currency".
Reporting foreign currency transactions in the functional currency
A foreign currency transaction is one denominated in or requiring settlement in a currency other than the functional currency. On initial recognition, it is recorded in the functional currency by applying the spot exchange rate at the date of the transaction (an average rate may be used if it approximates the actual rate).
At each subsequent reporting date, the treatment depends on the monetary/non-monetary distinction:
Monetary items (money held and assets and liabilities to be received or paid in fixed or determinable amounts of money — cash, receivables, payables, loans) are translated using the closing rate.
Non-monetary items measured at historical cost are translated using the exchange rate at the date of the transaction (not re-translated).
Non-monetary items measured at fair value are translated using the exchange rate at the date when the fair value was determined.
Recognition of exchange differences
Exchange differences arising on the settlement of monetary items, or on translating monetary items at rates different from those at which they were initially recorded or previously reported, are recognised in profit or loss in the period in which they arise. So a foreign currency payable that is re-translated at a weaker closing rate produces an exchange loss in profit or loss.
An important exception applies to a monetary item that forms part of the entity's net investment in a foreign operation: in the consolidated financial statements, exchange differences on such an item are recognised in other comprehensive income and accumulated in a separate component of equity, and reclassified to profit or loss on disposal of the foreign operation. Unlike AS 11 (as applied in India), Ind AS 21 does not provide options to capitalise certain exchange differences into the cost of assets or to amortise them.
Translation of foreign operations
Where an entity has a foreign operation (a subsidiary, associate, joint arrangement, or branch whose activities are based in a country or currency other than the reporting entity's), its results and financial position are translated into the presentation currency using the following method: assets and liabilities are translated at the closing rate at the date of the balance sheet; income and expenses are translated at the exchange rates at the dates of the transactions (an average rate is often used for practicality); and all resulting exchange differences are recognised in other comprehensive income and accumulated in a separate component of equity (the foreign currency translation reserve). On disposal of the foreign operation, the cumulative amount is reclassified from equity to profit or loss.
Change in functional currency
When there is a change in an entity's functional currency, the entity applies the translation procedures applicable to the new functional currency prospectively from the date of the change.
Disclosure
Disclosures include the amount of exchange differences recognised in profit or loss (other than those on financial instruments measured at fair value through profit or loss), and net exchange differences recognised in other comprehensive income and accumulated in a separate component of equity, with a reconciliation of the opening and closing amounts. When the presentation currency differs from the functional currency, that fact is stated together with the functional currency and the reason for using a different presentation currency.
A brief illustration
An Indian company (functional currency: rupee) buys machinery from a German supplier for €1,00,000 when the rate is ₹90/€, recording a payable of ₹90 lakh and the machinery (non-monetary, at cost) at ₹90 lakh. At year-end the payable (monetary) is still outstanding and the rate is ₹93/€, so it is translated at the closing rate to ₹93 lakh — a ₹3 lakh exchange loss goes to profit or loss. The machinery stays at ₹90 lakh (non-monetary at historical cost, not re-translated). Separately, the company has a foreign subsidiary whose accounts are translated for consolidation — its assets and liabilities at the closing rate, its income and expenses at average rates, with the resulting exchange differences taken to OCI and accumulated in a translation reserve. Under AS 11, the transaction mechanics are similar, but the functional-currency framing, the OCI treatment for foreign-operation translation, and the absence of capitalisation options differ.
How Ind AS 21 compares with AS 11
The core transaction mechanics are similar to AS 11 — transaction-date rate on initial recognition, closing rate for monetary items, historical rate for non-monetary items at cost, and exchange differences generally to profit or loss. The significant differences are: (1) Ind AS 21 is built on the functional currency concept (each entity measures in its functional currency and translates into a presentation currency), whereas AS 11 uses a single "reporting currency"; (2) exchange differences on translating foreign operations, and on monetary items that are part of the net investment in a foreign operation, are recognised in OCI under Ind AS 21 (accumulated in a translation reserve and recycled on disposal), consistent with the OCI concept absent from AS; and (3) Ind AS 21 does not carry the India-specific options under AS 11 to capitalise or amortise certain exchange differences. So the frameworks agree on the basics but differ on the functional-currency architecture and the OCI treatment of foreign-operation translation.
Common pitfalls
Recurring issues include misidentifying the functional currency; re-translating non-monetary items at the closing rate (only monetary items are re-translated); recognising foreign-operation translation differences in profit or loss rather than OCI; applying AS 11-style capitalisation of exchange differences (not permitted under Ind AS 21); and failing to reclassify the translation reserve to profit or loss on disposal of a foreign operation.
Why this is cleaner on a unified system
Foreign exchange accounting is more reliable when multi-currency transactions, period-end re-translation, and the ledger sit in one connected system that applies exchange rates consistently and captures each entity's functional currency. When the platform records each foreign currency transaction at the transaction-date rate, re-translates monetary items at the closing rate, and handles the translation of foreign operations into the presentation currency with differences routed to OCI, the exchange effects flow into the accounts correctly without manual reconciliation — particularly valuable for businesses operating across multiple countries and currencies, a theme that runs through our multi-country guides.
This article is a detailed educational summary of Ind AS 21 in plain language. It is not a substitute for the full text of the standard. Accounting standards are amended from time to time; always verify the current, authoritative text of Ind AS 21 as notified under the Companies Act before relying on it, and consult a qualified chartered accountant for application to your specific circumstances.