How to Invoice International Clients
Invoicing a client in another country raises questions a domestic invoice never asks. Which currency do you bill in? Who absorbs the $25 wire fee that disappears somewhere between two banks? Do you add VAT, GST, or sales tax — and does 03/04/2026 mean March or April? Left vague, any one of these can delay a payment by weeks.
This guide walks through the decisions that only exist across borders: choosing a billing currency, stating who bears transfer fees, picking a payment method, handling tax on exported services, and writing dates and bank details that can't be misread. It closes with a note on physical goods, which need a separate document — a commercial invoice — for customs.
Agree the terms in writing before you start
Chasing an unpaid invoice in your own country is tedious. Chasing one across a border is often not worth the cost of trying — different legal system, different language, no practical way to enforce a small claim. So with international clients, the agreement you make before starting does the work that enforcement can't do later.
Before the project begins, confirm in writing — email is fine — the currency, the payment method, the payment deadline, and who pays transfer fees. A deposit matters more here than with a local client: 30-50% upfront is common, and on a $3,000 project a 40% deposit means you're never owed more than $1,800 by someone you may never meet.
Bill in the client's currency — and say so explicitly
In most cases, invoice in the client's currency. It's easier for them to approve and pay, there's no conversion step on their side to slow things down, and a familiar number gets fewer questions from their finance team. The trade-off is that you carry the exchange-rate risk between issuing the invoice and receiving the money — acceptable on a two-week invoice, worth thinking about on a six-month retainer.
Whichever currency you pick, name it with its ISO code. A plain $ sign could mean US, Canadian, Australian, or Singapore dollars, so write "Total due: 2,500 USD" or "EUR 1,200", not just a symbol. If you price in your own currency instead, agree in advance who takes the conversion cost and roughly at what rate, or you'll negotiate it after the fact — from a weaker position.
State who pays the transfer fees
An international payment can shed money at three points: the sender's bank charges a fee, one or more intermediary banks deduct their cut in transit, and your bank may charge to receive the funds — on top of any exchange-rate markup. Say nothing, and a $3,000 invoice can arrive as $2,955, leaving you to decide whether $45 is worth an awkward email.
Head this off with one line on the invoice: "Please send the full invoice amount; all transfer fees are the payer's responsibility." If the client pays by SWIFT, they can often select "OUR" charges, where the sender covers all fees, instead of the default shared arrangement. Alternatively, accept that fees come out of your side and build them into your rate — either is fine, as long as it's decided before the money moves.
Choose the payment method deliberately
A traditional international bank transfer over SWIFT reaches almost any country, but it's the slowest and often the most expensive option: sending fees commonly run $15-50, intermediary banks may deduct more, and settlement takes one to five business days. It remains the default for large invoices and for corporate clients whose finance systems only do wires.
Modern transfer services — Wise, Payoneer, and similar multi-currency platforms — usually cost a fraction of a wire and settle faster, and some give you local account details in the client's country so they can pay you like a domestic supplier. Card and PayPal payments are the most convenient for the client but typically cost you 3-4% plus cross-border surcharges: $90-120 gone on a $3,000 invoice, which is reasonable for small amounts and expensive for large ones.
Offer one primary method and one backup, and put the exact payment details for each on the invoice itself. Every extra email asking "how do I actually pay you?" is days added to your payment cycle.
Handle tax carefully — check both ends
Cross-border services often escape the tax you'd charge at home. In many countries, services exported to an overseas business are zero-rated, treated as outside the scope of VAT, GST, or sales tax, or handled by the client under a reverse-charge mechanism, where they account for the tax themselves. In those cases you don't add tax to the invoice — but you may still be required to say why, with wording along the lines of "Reverse charge: customer to account for VAT" and both parties' tax registration numbers.
None of this is universal. The treatment depends on where you're registered, what you're selling, and whether the client is a business or a consumer — digital services sold to consumers abroad, in particular, can create tax obligations in the customer's country. Check your local rules, and ask the client what their end needs on the invoice, such as your tax ID or a specific note. If no tax applies, showing a 0% line or a one-sentence explanation prevents the invoice bouncing back with questions.
Write details that can't be misread
Numeric dates are a trap: 03/04/2026 is March 4 to an American and 3 April to most of the rest of the world, a 30-day difference on a due date. Name the month — "Issued 4 April 2026, due 4 May 2026" — on every date the invoice carries. Give phone numbers with the country code, like +44 or +1, and include the country in both addresses.
Payment details deserve the same care, because a single wrong character can bounce a transfer and cost a week. For a bank payment, include the account holder's name exactly as the bank records it, the IBAN or account number, the SWIFT/BIC code, and the bank's name and address. Some countries add their own identifiers — a routing number in the US, a sort code in the UK, an IFSC code in India — so include whatever your bank specifies for inbound international payments, and copy it from your banking app rather than from memory.
Shipping goods? You need a commercial invoice too
Everything above assumes services or digital work, where the invoice's only job is getting you paid. Physical goods crossing a customs border need a commercial invoice as well — a customs document declaring what's in the shipment, its quantity and value, the country of origin, and often Harmonized System (HS) codes and delivery terms. Customs authorities use it to assess duties, and a missing or vague one holds the shipment at the border.
It's a different document doing a different job, even though small shipments sometimes use one paper for both. If you're exporting goods, check what the destination country requires and prepare the commercial invoice separately from your payment invoice.