How to Invoice International Clients

Direct answer

Agree on currency, describe what is being sold, show the total in that currency, and give payment instructions that work across borders (SWIFT, local rails, or agreed processor).

Currency first

Invoice in the currency your contract states. If the client pays in another currency, say who converts and at which rate if applicable.

Tax and registration

Rules vary by country and your status. You may need a tax ID, reverse charge wording, or local advice—this article is not legal or tax advice.

Banking details

For wires, include IBAN/BIC or SWIFT as your bank requires. Double-check numbers; international returns are slow and expensive.

Clarity beats jargon

Use line items your client’s AP team can map to their PO. Add a short note if the invoice relates to a specific contract or milestone.

Practical habit

Send the PDF in an email that repeats the amount due and due date in the first two lines.

Getting paid across borders is mostly about clarity and agreed terms—then following them on every invoice.