How to Invoice International Clients: A Practical Guide

Step 1: Confirm the Details Before You Start

Before sending a single invoice, establish three things with your international client:

1. Their legal entity name and billing address — not just the contact name, but the formal registered name of the business you'll be billing
2. Their tax status — are they VAT/GST registered? Do they need your tax number on the invoice? Some countries require this for business expense claims
3. Their preferred payment method — bank transfer, PayPal, Wise, or card? International transfers can take 3–5 business days and carry fees, so align on this upfront

Getting this information before work starts prevents invoice rejections and payment delays later.

Currency: Which Currency Should You Invoice In?

This is the first decision unique to international billing, and it has real financial consequences.

Invoice in Your Home Currency

The simplest option. You know exactly what you'll receive; there's no exchange rate risk. Clients may push back if your currency is unfamiliar to them, but many international clients are comfortable paying in GBP, USD, or EUR regardless of their own currency.

Invoice in the Client's Currency

Makes life easier for your client and can give you a competitive edge. However, you take on exchange rate risk — the amount you receive after conversion depends on the rate at the time of payment, which may differ from the rate when you priced the work. To mitigate this, convert at the date of invoice and state both the foreign currency amount and its equivalent in your home currency.

Invoice in a Neutral Currency

Some freelancers invoice in USD or EUR regardless of their home currency or their client's currency, since these are widely accepted "business currencies." This can work well but creates conversion costs for both parties.

Tax: Do You Charge VAT or GST on International Invoices?

This depends on your tax registration, the type of service, and where your client is located.

UK VAT-Registered Businesses

Under UK place of supply rules, services supplied to a business customer outside the UK are generally outside the scope of UK VAT, or zero-rated for exports of goods. In practice, for most service businesses invoicing an overseas business, you do not charge UK VAT. Your invoice should note: "No VAT charged — supply is outside the scope of UK VAT" or similar.

If your client is in the EU and is VAT-registered, the "reverse charge" mechanism applies — they account for VAT in their own country rather than you charging it. Include a note on the invoice: "Reverse charge — VAT to be accounted for by the customer."

Services provided to individual consumers (non-business) in other countries are more complex — UK VAT may still apply depending on the service type. Consult HMRC guidance or an accountant if this applies to you.

Businesses in Other Countries

Rules vary significantly. A US-based freelancer billing a UK client may find their client expects a W-8BEN form rather than a VAT invoice. An Australian freelancer invoicing an EU company will deal with GST rules rather than VAT. The core principle is: understand your own country's export rules, and ensure your invoice notes explicitly state your tax treatment.

Banking and Payment Methods for International Invoices

SWIFT Bank Transfer

The standard method for international B2B payments. Requires your IBAN (or account number and sort code for UK to UK), your BIC/SWIFT code, and your bank's name and address. Fees range from £10–£30 per transfer at traditional banks, and transfers typically take 1–5 business days.

Include all the necessary banking details on your invoice. Missing even one field (like the SWIFT code) will cause the transfer to fail.

Wise (formerly TransferWise)

A popular choice for freelancers because transfer fees are significantly lower than traditional banks (often under 1%), and Wise offers multi-currency accounts that let you hold, receive, and convert multiple currencies. Your client pays into a local bank account (which Wise provides in their country), and you receive your home currency at the mid-market exchange rate.

PayPal

Widely used and familiar. The downside: PayPal charges 3–5% on international transfers, plus currency conversion fees. For small amounts, this is manageable. For large invoices, the fees become significant — a $5,000 invoice could cost you $200–$250 in fees.

Stripe

Better for recurring billing or when your client wants to pay by card. Supports 135+ currencies. Fees are typically 1.5–3.5% depending on the card type and currency. Useful if your clients prefer card payments over bank transfers.

What to Include on an International Invoice

All the standard invoice fields (see our complete invoice checklist) plus:

• Currency clearly labelled (e.g. "1,500.00 GBP")
• Your IBAN and SWIFT/BIC code for bank transfers
• Any applicable exchange rate reference (if billing in foreign currency)
• Tax treatment note (e.g. "Zero-rated export" or "Reverse charge applies")
• Your VAT/GST/tax number (if registered and relevant)
• Client's VAT/GST number (if required in their country)
• A statement about which party bears transfer fees, if relevant

Protecting Against Late and Non-Payment

Request a Deposit

For new international clients, always request a 30–50% deposit before beginning work. International disputes are more difficult to resolve than domestic ones — prevention is the only practical protection. Once you have a track record with a client, you can extend standard payment terms.

Use a Contract

A written contract specifying the work scope, payment terms, currency, and late payment terms provides a legal basis for pursuing non-payment. Even a simple email exchange confirming the scope and price is better than nothing.

Specify Late Payment Terms

Include a late payment clause on your invoice — for example, "Interest at 2% per month will apply to balances unpaid after 30 days." This provides a clear basis for following up and may encourage more timely payment.

Follow Up Promptly

Don't wait 60 days to chase an overdue international invoice. Send a polite follow-up email 2–3 days before the due date, and again on the due date if unpaid. The sooner you identify a payment problem, the more options you have. Learn more about professional follow-up in our guide on how to send an invoice professionally.

Record-Keeping for International Invoices

International invoices create additional record-keeping requirements:

• Keep evidence of the payment currency, exchange rate used, and sterling equivalent for each transaction
• Record whether VAT was charged, and if not, why (e.g. "outside scope — exported service")
• Retain all invoices for the minimum required period (6 years in the UK)
• For large overseas payments, your bank may ask for evidence of the commercial transaction — keep your invoice and contract accessible

Summary

Invoicing international clients requires clarity on currency, tax treatment, and payment method before work begins. Generally, UK VAT-registered businesses do not charge VAT on services to overseas businesses, but the rules vary by service type and client location — always verify. Use your IBAN and SWIFT code for bank transfers, consider Wise for lower fees, and always request a deposit from new international clients. Clear, detailed invoices with explicit currency labelling and tax statements prevent delays and disputes.