Billing across currencies introduces conversion questions that can affect how much you actually receive. Here's how to handle it cleanly.
State the invoice currency explicitly
Always label the currency clearly (e.g., 'USD' rather than just '$') to avoid ambiguity when symbols overlap between currencies.
Decide who absorbs conversion fees
Bank and payment processor conversion fees can eat into your payment. Clarify in your terms whether you or the client covers these costs.
Consider invoicing in your own currency
Invoicing in your home currency shifts the conversion responsibility (and risk) to the client, simplifying your own bookkeeping and protecting you from exchange rate swings.
If invoicing in the client's currency
Build a small buffer into your rate to offset potential unfavorable exchange rate movement between invoicing and receiving payment.
Use a reliable reference rate
If you need to convert amounts for your own records, use a consistent, reputable source (like your bank's rate or a known financial data provider) rather than switching sources invoice to invoice.
The bottom line
Currency conversion doesn't need to be complicated — clarity on currency, fees, and who bears the risk prevents most disputes before they start.