Aug 21
Multi-currency accounting often goes wrong in three places: choosing the wrong functional currency, applying inappropriate exchange rates and failing to retranslate foreign-currency monetary balances at the reporting date.
Under FRS 102, functional currency is the currency of the primary economic environment in which the business operates. It is determined by factors such as the currency influencing sales prices and the currency in which labour, materials and other operating costs are mainly incurred. It is not simply whichever currency management prefers.
This is worth establishing when setting up companies in both the UK and Ireland, particularly where sales, costs and financing are split between sterling and euro.
| Item | Typical accounting treatment | Where exchange differences arise |
|---|---|---|
| Foreign-currency sales and purchases | Spot rate at transaction date; an appropriate average may be used where it approximates actual rates | Profit and loss |
| Foreign-currency bank accounts, debtors, creditors and loans | Closing rate at reporting date | Usually profit and loss |
| Fixed assets held at historical cost | Transaction-date rate | Normally not retranslated merely because exchange rates change |
| Inventory at historical cost | Transaction-date rate, subject to normal inventory measurement rules | Not routinely retranslated as a monetary item |
| UK VAT invoice in foreign currency | UK VAT amounts converted to sterling using an accepted method | Sterling VAT records |
| Irish VAT invoice in foreign currency | Corresponding figures also shown in euro | Euro VAT records |
| Financial statements translated into another presentation currency | Assets and liabilities at closing rate; income and expenses at transaction-date rates or suitable averages | Translation differences recognised outside profit or loss |
FRS 102 permits average rates where they provide a reasonable approximation, but not where exchange rates fluctuate so much that the average becomes misleading. Foreign-currency monetary items are retranslated at the closing rate.
Good monthly management accounts can also separate exchange gains and losses clearly so management can distinguish trading performance from currency movements. This should sit alongside the financial KPIs you review each month.
For UK VAT purposes, foreign-currency transactions must be converted into sterling. HMRC permits methods including the UK market selling rate at the time of supply or HMRC’s published period rates, provided the chosen method is applied correctly. UK VAT invoices issued in a foreign currency must show the required VAT figures in sterling.
In Ireland, a foreign-currency VAT invoice must also show the corresponding figures in euro, normally using the relevant Central Bank selling rate unless Revenue agrees another consistent method.
Businesses trading across both jurisdictions should therefore review VAT compliance across the UK and Ireland border separately from their management-accounting exchange-rate policy.
Use accounting software with genuine multi-currency functionality. Set the functional and base-currency structure correctly at implementation, connect separate sterling and euro bank accounts where appropriate, and reconcile intercompany balances regularly.
Our guide to switching to cloud accounting covers system selection, while SCC’s cross-border accounting and tax specialists can help establish the reporting structure. The SME business advisory team can also assist with management reporting.
Yes, where appropriate. A UK company’s functional and presentation currencies can be non-sterling. Corporation Tax is ultimately a sterling tax, but where accounts use a non-sterling functional currency, tax rules allow profits to be computed in that currency and then translated into sterling.
No. Average rates can be appropriate for some income and expense transactions, but monetary balances at the reporting date normally require the closing rate.
Review exposure early. Matching euro receipts against euro payments can reduce unnecessary conversions, while larger or more volatile exposures may justify specialist treasury advice. SCC’s business recovery and restructuring team can help where exchange losses are contributing to wider financial pressure.
Keep a documented exchange-rate policy, the source of rates used, reconciliations and supporting schedules. This is also consistent with what an external audit expects to see.
If your sterling and euro reporting no longer reconciles reliably, speak to the SCC team about reviewing the ledger structure before errors accumulate across tax, VAT and management reporting.
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