A refund in a different currency needs two reconciliations: the sale adjustment and the cash settlement. Do not treat the Singapore-dollar value of the outgoing bank payment as the GST credit automatically. Link the refund to the original invoice and a properly prepared credit note.
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Establish the amount the customer is owed
Find the original sale, invoice currency, tax treatment and agreed refund reason. Record whether the refund is full or partial and whether the parties agreed a conversion date, exchange rate or fixed settlement amount. Separate a genuine reduction in the selling price from bank fees or exchange movement.
If goods are being returned, use a return-and-refund reconciliation to track the physical stock separately. Money refunded does not prove goods have reached the warehouse.
Prepare the GST adjustment from the credit note
IRAS’s invoicing guidance explains credit-note requirements, including the link to the original invoice. For foreign-denominated tax invoices, IRAS generally specifies the historical invoice exchange rate, with an option to use the prevailing rate where the customer is GST-registered. The chosen approach must be applied consistently.
Check the applicable conditions with the tax adviser. A refund paid in Singapore dollars does not by itself select the credit note’s conversion method. Our guide to invoice and ledger exchange-rate differences explains why tax and accounting conversions need a bridge.
Use separate columns for separate differences
| Record | What to identify |
|---|---|
| Original sale | Currency, taxable amount and GST recorded |
| Credit note | Credited amount and supported SGD GST adjustment |
| Refund agreement | Settlement currency and agreed conversion |
| Bank payment | Cash sent, fees and amount received where known |
| Ledger bridge | Exchange or other differences reviewed by the accountant |
For example, a USD invoice is partly credited and the customer asks to receive SGD. Keep the USD credit and its SGD GST calculation visible, then explain the SGD payment under the refund agreement. Do not force the tax control account to absorb every difference between the two currencies.
Review the return period before filing
The reason for the credit note matters. A commercial refund and a correction of previously wrong GST treatment may require different return adjustments. Ask the adviser to identify the appropriate return and period rather than always reopening the original quarter or always using the current one.
Retain the invoice, credit note, refund authorisation, conversion evidence and bank record together. If a payment platform deducts charges, identify them separately so the customer balance and expense records remain understandable.
Must every currency difference be a GST correction?
No. Establish whether the underlying taxable consideration changed or whether the difference arose when settling cash. Have the accountant and tax adviser reconcile the actual transaction before deciding the entries and return adjustment.
For related company questions, see our tax and GST guides.
Any exchange gain or loss on the refund also needs an income tax analysis; see foreign exchange gains and losses for Singapore companies.
Get help with foreign-currency refunds and GST
For accounting, tax or corporate records support, email [email protected] or WhatsApp +65 8501 7133. Tell us which company is involved, what has happened and the next deadline. We can help organise the records and coordinate the appropriate specialist review.
Kevin Yeo, Raffles Corporate Services