Sole trader exchange gains and losses: UK tax
For a UK sole trader using accruals accounts, supplier-debt exchange gains are generally taxable and losses deductible when they meet the trading and non-capital tests. This includes qualifying year-end differences before payment. Cambridge China Bridge can help organise supplier paperwork for your accountant.
Check your accounting basis first
This guide addresses foreign-currency supplier debts in accruals accounts. Cash basis recognises business income and expenses when money is received or paid, without accounting for creditors. Confirm your basis with your accountant before applying a year-end debt adjustment.
For the wider importing position, see importing as a sole trader. Here, the question is how exchange movements affect trading profit.
Apply the trading-purpose test
HMRC's general rule taxes a gain that is a trading receipt and not capital. A loss qualifies as a trading expense only if it is non-capital and incurred wholly and exclusively for the trade.
Give your accountant the purchase order, invoice and explanation of what you bought. Separate ordinary stock purchases from equipment, personal purchases and financing arrangements rather than assuming every factory debt has the same treatment.
When you settle the supplier debt
Settlement realises the exchange gain or loss. Reconcile the sterling payment against the debt's recorded sterling value. If an earlier year-end adjustment exists, ask your accountant to reconcile that too, so the same movement is not counted again.
Keep the invoice currency, payment date, conversion record and bank charges clearly identified. Our supplier payment guide covers arranging the payment route.
When the debt remains unpaid at year end
In accruals accounts, outstanding monetary debts are retranslated into sterling at the closing rate. Qualifying unrealised exchange differences generally enter the tax computation too; payment is not the only trigger.
Prepare an unpaid-invoice schedule showing the foreign-currency balance, sterling carrying value and closing-rate calculation. Ask your accountant to connect it to the following period's settlement entries.
Flag matched balances and unusual arrangements
HMRC has an exception for matched foreign-currency assets and liabilities: where they are matched in a currency and no exchange differences enter the profit and loss account, no tax adjustment is made. Ask your accountant whether your arrangement meets those conditions.
Send any currency contracts or linked financing documents with the invoice schedule. If payment involves a draft, also read bills of exchange for supplier payments. Cambridge China Bridge's staff in China can help obtain supplier documents while your accountant determines the tax treatment.
Frequently asked questions
Are supplier exchange gains taxable for a sole trader?
Generally yes under accruals accounting, if the gain is a trading receipt and not capital. Check the debt's purpose and any matched-balance exception.
Can I deduct an exchange loss on a supplier invoice?
Generally yes if it is non-capital and incurred wholly and exclusively for your trade. Give your accountant evidence of the underlying purchase.
Do unpaid invoices create year-end exchange adjustments?
Under accruals accounting, outstanding foreign-currency monetary debts are retranslated at the closing rate. Qualifying unrealised differences generally affect taxable profit.
Does this year-end treatment apply under cash basis?
Cash basis does not account for creditors in the same way. Confirm your accounting basis before adding an adjustment for an unpaid supplier debt.