Foreign Currency Invoices: Explain the Difference When Payment Arrives

If you invoice a customer in euros but keep your books in dollars, the eventual deposit may not match the invoice's original dollar value. Before sending a balance reminder or editing the sale, identify the currency movement and any documented payment fee.

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Confirm what the customer agreed to pay

Keep the invoice amount and currency together. EUR 1,000 and USD 1,000 are different obligations. Record the agreed currency, payment terms and fee arrangement before evaluating the receipt. If the customer was billed in dollars and sends less than the agreed dollar amount, do not assume a currency adjustment clears the balance.

For each foreign-currency invoice, retain the original document, recognition date, conversion rate and source, recorded dollar amount, settlement evidence and any fee detail. A useful review record connects those items without overwriting the original invoice.

Keep three dates visible

Columbia University's accounting lecture identifies the transaction date, reporting date and settlement date as separate checkpoints. In the basic accrual treatment it describes, initial measurement uses the transaction-date spot rate; an outstanding foreign-currency receivable is remeasured at reporting dates and again at settlement. Exchange differences affect income separately from the original sale.

The IFRS Foundation also explains initial measurement and period-end translation of monetary items. Confirm your business's accounting basis and applicable framework before configuring the software. An invoice date is not automatically the correct revenue-recognition date.

Example: the full invoice was paid

This invented, simplified accrual example assumes U.S. dollars are the business's functional currency, the sale and payment occur in the same reporting period, and there are no hedges or advance payments.

A EUR 1,000 sale is recorded at USD 1.10 per euro, creating a $1,100 receivable. The customer pays all EUR 1,000 when the settlement rate is USD 1.08. That is $1,080 before a separately documented $10 payment fee; the bank receives $1,070.

The $30 difference consists of a $20 exchange loss and a $10 fee. With those facts supported, the full $1,100 receivable is cleared. A simple entry debits cash $1,070, exchange loss $20 and payment fees $10, and credits receivables $1,100. The entry balances; there is no unpaid customer amount in this example.

Investigate differences instead of forcing a match

When reviewing a deposit, ask how much the customer sent in the agreed currency, what the processor converted, which rate it applied and what it deducted. Compare the remittance with the bank record. Separate supported fees from exchange differences and genuine short payments.

If the payment evidence is incomplete, leave a clearly documented exception for review. Do not label every difference an exchange loss just to close the invoice. Check partial payments, credits and duplicated receipt entries before adjusting the balance.

Make the next review repeatable

Use a consistent rate-source policy and retain the rate actually used. Review open foreign-currency invoices at each reporting cutoff. Confirm whether your accounting software posts exchange adjustments automatically before entering a second adjustment.

This process is relevant only when foreign-currency activity exists. A business that invoices and settles entirely in its functional currency does not need an extra currency schedule. Foreign-currency bank balances, subsidiaries, hedging and tax treatment require a broader review than this invoice example.

Sources and factual boundaries

Columbia University, Corporate Financial Reporting II, Lecture 6, page 1 supports the three-date transaction model. This is teaching material; its later hedge-accounting examples are outside this guide's scope. The IFRS Foundation's June 2022 update, IAS 21 discussion corroborates initial measurement and reporting-date translation under IFRS. It is not a statement that every U.S. small business uses IFRS. Sources reviewed October 8, 2026. The checklist and numbers above are original Summer Peaks guidance and an illustration, not a client result.