How are exchange differences treated when a foreign currency borrowing funds a qualifying asset under IAS 23?

ary items at historical cost are frozen at the transaction-date rate — a frequent source of error. - Using average rates carelessly. An average rate is a practical approximation for the period; it cannot be used when rates fluctuate significantly or when precision is required. - Ignoring intra-period settlements. When a transaction is settled within the same accounting period it originated, the full exchange difference is recognised in that one period (IAS 21.29). Entities sometimes spread this incorrectly. - Misrouting OCI exchange differences. The exchange component of a gain or loss on a non-monetary item must mirror how the underlying gain or loss is presented — OCI items stay in OCI (IAS 21.31). - Functional currency vs. presentation currency confusion. The functional currency is determined by the primary economic environment; it is not a free choice. Presentation currency may differ, but this does not change how foreign currency transactions ar

What rate is used to retranslate a foreign currency receivable that is covered by a forward contract?

e first measured (IAS 21.20). - Exchangeability assessments. Since the 2023 amendments, entities must assess whether a currency is exchangeable into another currency at the measurement date and for a specified purpose before applying a spot rate (IAS 21.8A). This matters in restricted-currency environments. --- Key paragraphs to know - IAS 21.20 — Defines a foreign currency transaction and sets out the three main categories (goods/services, borrowing/lending, asset acquisition/disposal). - IAS 21.29 — Explains how exchange differences arising on settlement are allocated to accounting periods when settlement spans more than one period. - IAS 21.31 — Governs where the exchange component of a non-monetary item's gain or loss is presented when that gain or loss goes through OCI. - IAS 21.8A — Requires entities to assess currency exchangeability at each measurement date and for a specific purpose — critical under the 2023 lack-of-exchangeability amendment

IAS 21 Foreign Currency Transactions

Q: How are foreign currency transactions recognised and remeasured under IAS 21?

Core rule Every transaction denominated in a foreign currency must be recorded in an entity's functional currency using the spot exchange rate at the date of the transaction. When exchange rates move between the transaction date and the settlement date — or between the transaction date and a reporting date — the resulting differences must be recognised in profit or loss for the period in which they arise. This rule applies whenever an entity buys or sells goods or services priced in a foreign currency, borrows or lends foreign-currency funds, or acquires and disposes of foreign-currency assets (IAS 21.20). --- How it works Step 1 — Initial recognition Record the transaction at the spot rate on the transaction date. For example, a USD invoice received when the rate is 1.25 EUR/USD is recorded at that rate. Step 2 — Remeasurement at reporting date Monetary items (cash, receivables, payables) are retranslated at the closing rate. Non-monetary items carr

IAS 21 Foreign Currency Transactions — Core Rule

Every transaction denominated in a foreign currency must be recorded in an entity's functional currency using the spot exchange rate at the date of the transaction. When exchange rates move between the transaction date and the settlement date — or between the transaction date and a reporting date — the resulting differences must be recognised in profit or loss for the period in which they arise.

This rule applies whenever an entity buys or sells goods or services priced in a foreign currency, borrows or lends foreign-currency funds, or acquires and disposes of foreign-currency assets (IAS 21.20).

How IAS 21 Foreign Currency Transactions Works

Step 1 — Initial recognition

Record the transaction at the spot rate on the transaction date. For example, a USD invoice received when the rate is 1.25 EUR/USD is recorded at that rate.

Step 2 — Remeasurement at reporting date

Monetary items (cash, receivables, payables) are retranslated at the closing rate. Non-monetary items carried at historical cost stay at the original transaction-date rate.

Step 3 — Settlement

When the transaction settles in a later period, the exchange difference for each period up to settlement is determined by the rate movement during that specific period — not the full movement since inception (IAS 21.29).

Practical journal entry — outstanding trade payable

Invoice received: €10,000 payable, rate at invoice date = 1.20 (functional currency units per €)

Dr Trade payable 200 / Cr Foreign exchange gain 200
(Rate moves from 1.20 → 1.18 by period end; payable remeasured to 11,800 FCU)

When a gain or loss on a non-monetary item is recognised in other comprehensive income (for example, a revalued asset under IAS 16), the exchange component of that gain or loss follows the same route — OCI, not profit or loss (IAS 21.31).

IAS 21 Foreign Currency Transactions — Common Pitfalls

Confusing monetary and non-monetary items. Only monetary items are remeasured at the closing rate. Non-monetary items at historical cost are frozen at the transaction-date rate — a frequent source of error.
Using average rates carelessly. An average rate is a practical approximation for the period; it cannot be used when rates fluctuate significantly or when precision is required.
Ignoring intra-period settlements. When a transaction is settled within the same accounting period it originated, the full exchange difference is recognised in that one period (IAS 21.29). Entities sometimes spread this incorrectly.
Misrouting OCI exchange differences. The exchange component of a gain or loss on a non-monetary item must mirror how the underlying gain or loss is presented — OCI items stay in OCI (IAS 21.31).
Functional currency vs. presentation currency confusion. The functional currency is determined by the primary economic environment; it is not a free choice. Presentation currency may differ, but this does not change how foreign currency transactions are first measured (IAS 21.20).
Exchangeability assessments. Since the 2023 amendments, entities must assess whether a currency is exchangeable into another currency at the measurement date and for a specified purpose before applying a spot rate (IAS 21.8A). This matters in restricted-currency environments.

IAS 21 Foreign Currency Transactions — Key Paragraphs

IAS 21.20 — Defines a foreign currency transaction and sets out the three main categories (goods/services, borrowing/lending, asset acquisition/disposal).
IAS 21.29 — Explains how exchange differences arising on settlement are allocated to accounting periods when settlement spans more than one period.
IAS 21.31 — Governs where the exchange component of a non-monetary item's gain or loss is presented when that gain or loss goes through OCI.
IAS 21.8A — Requires entities to assess currency exchangeability at each measurement date and for a specific purpose — critical under the 2023 lack-of-exchangeability amendments.