Multi-currency accounting: points to secure

Updated March 30, 2026 - Maintaining multi-currency accounting is not just about recording amounts in dollars or pounds. In 2026, we must secure conversion, exchange differences, closure and the real impact on margin and cash flow.

As soon as the company invoices, purchases or holds balances in foreign currency, it must make the operational flow and the accounting reading in euros coexist. This requires a consistent conversion method and a revaluation of certain positions at closing.

To complete, see International subsidiary, Optimization of tax results before the close of your accounting year and Taxation and déclarations: VAT, IS, advance payments.

• date and source of the conversion rate;
• processing of customer and supplier invoices;
• settlement discrepancies;
• revaluation of receivables and debts at closing;
• monitoring of currency accounts;
• impact on results and cash.

The closing is the real sensitive moment#

At the closing, receivables and debts in foreign currencies must be the subject of particular attention. This is often where the most costly errors in results or balance sheets arise.

Hayot Expertise advice: in multi-currency, the danger is not only accounting. It is also managerial: if the exchange rate differences are misread, the apparent margin can become misleading.

• use inconsistent rates depending on the files;
• forget about payment discrepancies;
• not properly reassessing certain closing positions;
• confuse commercial performance and exchange rate effect.

We recommend documenting:

• the official rate source;
• internal conversion rules;
• processing partial payments;
• the accounting scheme for differences;
• margin reporting excluding effects changes if necessary.

We can help you establish a simple, documented method that is compatible with your closing tools and controls.

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Multi-currency accounting becomes much more stable when the company adopts a written method. The issue is not only the conversion rate. You also need to decide who chooses the rate, when it is taken, how differences are monitored and what must be revalued at closing. Without a common framework, calculations change from one file to another and comparisons lose meaning.

Choose a consistent rate source#

The first reflex is to use an official source that stays the same over time. Banque de France publishes daily euro référence data, which makes it easier to document the method properly. What matters most is not mixing several sources without a rule. If the invoice rate, settlement rate and closing rate are différent, they must be known, traced and justified.

Distinguish transaction rate and closing rate#

The transaction rate is used to record the document when it is issued or received. The closing rate is used to revalue certain positions at the end of the period. Between the two, the currency moves and the difference can become significant. That is where mistakes appear: a receivable in dollars can look profitable at issuance and less favorable at settlement, without the commercial activity having deteriorated.

Track exchange differences#

Exchange differences need to be isolated properly so that commercial margin is not confused with market effects. If reporting does not separate currency impact from operating result, management will misread performance. A good file should therefore clearly show what comes from the business and what comes from currency fluctuation.

The first point concerns outstanding receivables and payables in foreign currency. The second relates to foreign bank accounts or balances that have not been converted. The third concerns provisions or grouping entries that must reflect the correct period-end value. This review is not only technical. It also avoids difficult discussions with management when the reported margin does not match what the team feels on the ground.

Imagine a company that invoices a US client in dollars, receives part of the payment later and pays its own suppliers in euros. At issuance, the revenue looks straightforward. At settlement, the rate has moved and a difference appears. If the method is not documented, the company may think the margin improved or deteriorated for the wrong reasons. With a clear policy, the file shows the operating result on one side and the currency effect on the other.

Before closing the month, check:

• the rate source used;
• customer and supplier invoices in foreign currency;
• partial or delayed payments;
• foreign currency bank accounts;
• exchange differences in progress;
• management comments to be shared.

This checklist becomes even more useful when the company works with several subsidiaries, international platforms or providers based outside the euro zone.

• use différent rates without written traceability;
• forget settlement differences;
• mix commercial performance and currency effects;
• fail to revalue open positions at closing;
• leave margin reporting without an excluding-exchange view.

(Official sources: ANC regulation 2022-06, BOFiP on conversion differences, Banque de France)