General information, not tax or legal advice. Cross-border tax obligations vary considerably. Speak to an accountant familiar with both jurisdictions before relying on anything here.
Where the money actually goes
A cross-border payment loses value in four places, and most freelancers only notice one of them.
- The sending fee. Visible, quoted upfront, and usually the smallest component.
- The exchange rate markup. The gap between the real mid-market rate and the rate you are given. Frequently 2 to 4 percent, and often invisible because the provider advertises "no fees".
- Intermediary bank charges. On traditional wire transfers, correspondent banks in the chain may each deduct a fixed amount. You find out when the money arrives short.
- The receiving fee. Your own bank may charge for an incoming international payment, sometimes a flat amount regardless of size.
On a $3,000 invoice, a combination of a modest fee and a 3 percent exchange markup costs around $120. Across a year of international work, that is a meaningful share of a month's income, and it is entirely invisible if you only look at the fee.
Compare what lands, not what is advertised
The only honest comparison is the final amount in your account, in your currency, for the same invoice.
Do this once, properly. Take a typical invoice amount, and for each method you are considering, record the quoted fee, the exchange rate offered, and the mid-market rate at that moment. The difference between the offered and the mid-market rate, expressed as a percentage, is the real markup. Add it to the fee.
The results frequently reverse people's assumptions. A provider charging a visible 1 percent fee at the true mid-market rate is cheaper than one charging nothing at a 3 percent markup, despite looking more expensive at a glance.
Worth checking for your situation:
- Multi-currency accounts that give you local receiving details in the client's country, so they make a domestic payment and you convert when you choose.
- Traditional bank wire, which is reliable and predictable but usually carries both the highest markup and the risk of intermediary deductions.
- Payment platforms, which are convenient and integrate with invoicing, but tend to combine a percentage fee with a conversion markup.
- Local rails where both parties are in the same system, which can be close to free.
Which currency to invoice in
Invoice in your own currency where you reasonably can. It moves the exchange rate risk to the client, who is generally a larger organisation better placed to absorb it, and it means the number on your invoice is the number you are planning around.
Sometimes that is not possible. Large organisations often pay suppliers only in their own currency, and in some markets quoting in USD is simply the convention. When you invoice in a foreign currency, two protections are worth having.
First, price with a margin for movement. A currency shifting 5 percent between quote and payment is unremarkable, and on a three-month project it is common.
Second, add a currency clause for longer engagements:
Fees are quoted in [currency] based on the exchange rate at the date of this agreement. Where the rate moves by more than 5 percent before invoicing, either party may request the outstanding amount be adjusted to reflect the current rate.
It rarely gets invoked. Its function is to make the risk shared and explicit rather than silently yours.
The paperwork that prevents withholding
This is the part that catches people out, because it produces a payment smaller than the invoice with no explanation.
If you are not a US person and you work for a US client, they will generally ask for a Form W-8BEN, or W-8BEN-E for a company. It certifies your foreign status and, where a tax treaty exists between your country and the United States, claims the reduced or zero withholding rate that treaty provides. Without it, the client may be required to withhold tax from your payment.
US freelancers working for US clients provide a W-9 instead. US freelancers with foreign clients generally do not need US withholding paperwork, though the client's own country may have requirements.
Elsewhere, the mechanisms differ but the principle is the same: many countries require a payer to withhold tax on payments to foreign suppliers unless treaty relief is documented in advance. Ask the client what they need before the first invoice rather than after a short payment arrives.
VAT, GST and the reverse charge
If you are VAT or GST registered and selling services to a business in another country, the tax frequently shifts to the customer under a reverse charge mechanism, meaning you invoice without adding it and note the reason on the invoice.
The rules differ by jurisdiction and by whether the customer is a business or a consumer, and digital services often have their own regime. This is genuinely one of the areas where an hour with an accountant who knows both countries pays for itself, particularly if a meaningful share of your income is cross-border.
Practical habits that reduce the friction
- Ask about payment method during the proposal, not after the first invoice. It is a normal commercial question and it prevents an unpleasant surprise.
- Put full payment details on the invoice, including IBAN, SWIFT or BIC and the intermediary details if required. An invoice missing a field sits unpaid for a week while someone emails you about it.
- State who bears transfer charges. "All transfer fees are payable by the sender" is a standard term and prevents the money arriving short.
- Allow longer payment terms for international clients, or expect them. Cross-border payments genuinely take longer to clear.
- Record the exchange rate on the day you are paid, since your own tax reporting will need the figure in your home currency.
- Claim the costs. Transfer fees and conversion markups are deductible business expenses, and the expense guide notes they are among the most frequently forgotten.
A note on rates across borders
Freelancers working for clients in higher-paying markets often price against their local market rather than the client's. That is a choice worth making deliberately rather than by default.
The market rate for the work is set largely by where the client is, not by where you sit. A developer in Warsaw delivering to a client in Zurich is competing in the Swiss market. Pricing against Polish benchmarks leaves money on the table, and the rates by profession pages show the gap between markets explicitly.