Working while you travel: contracts, invoices and getting paid by foreign clients

Key takeaways

• Pack the paperwork before you pack your bag: a signed contract or statement of work as a PDF, an invoice template with your tax ID already filled in, and proof of your own self-employment registration if your home country expects a client to see it.
• Where your client is based decides what form you sign, not where you happen to be sitting that week — a US client typically wants a W-9 or a W-8BEN, and the two aren’t interchangeable.
• The number worth tracking on a cross-border payment is the exchange-rate margin, not the line that says “fee” — for a typical business payment, the margin is roughly seven-eighths of the real cost.
• Some clients now route the contract, the onboarding and the payment itself through a contractor platform instead of paying you directly, which changes who you email when something stalls, not whether the paperwork exists.

You’re in a coworking space two time zones from home, laptop open, coffee gone cold, checking your bank app for the third time this morning. The invoice went out nine days ago. Your train leaves in two hours, and you’d like to know whether the payment cleared before you’re offline for six hours on a route with no signal.

This routine, chasing a transfer from a hotel lobby or a station platform, is normal now for anyone doing client work while moving between countries. The paperwork behind that payment matters as much as whether it arrives: it has to hold up if a bank asks a question, a tax authority wants a form, or the client’s finance team needs a document you don’t have open on your laptop. A growing number of clients run the whole chain, contract, invoice, payment, through a system built for international contractor payments rather than a one-off transfer from someone’s personal banking app, and that changes what you need ready and when.

The paperwork to pack — contract, invoice template, tax ID

Sort this before you leave, because fixing it from a departure lounge is worse than doing it at your desk.

• A signed contract or statement of work, as a PDF. Not a thread of emails that reference “the terms we agreed on.” If a payment gets held up, this is the first document anyone asks for.
• An invoice template with your details already filled in — legal or business name, address, and tax ID. Filling this in for the first time from a phone, mid-trip, is how invoices go out with the wrong number on them.
• Proof of your own self-employment status, if your country requires it. Depending on where you’re registered, a client (or whoever handles their contractor paperwork) may expect to see evidence you’re set up as self-employed before money moves at all: a PFA registration in Romania, a paušalac status in Serbia, and equivalents elsewhere carry the same weight even though the label differs by country.
• The right tax form for a US client, signed in advance. If the payer is a US company and you’re not a US person, they’ll want a W-8BEN (or a W-8BEN-E if you invoice through an entity) on file before the first payment goes out. The payer keeps this form; it doesn’t get filed with a tax authority. It expires at the end of the third calendar year after you sign it, so with a long-standing client, check the date instead of assuming the form still holds.
• If you’re the client’s own citizen working abroad, none of the above changes. A US citizen or green-card holder sitting in a co-living space in Lisbon is still a US person for tax purposes, and the client will ask for a W-9 regardless of the address on your invoice.

Keep all of it as PDFs in a folder you can open with no connection — a plane, a train tunnel, or a hostel with a login page that never loads.

Invoicing from the road

Build the template once, before travel, and reuse it. An invoice assembled from a phone in an airport, with the sequence number guessed at because you can’t check the last one, is how you end up with two invoices numbered the same or a gap a bookkeeper later asks about.

A few things that don’t change because you’re moving:

• Your invoice still has to satisfy your own country’s requirements. Some tax authorities expect a specific document format regardless of where the client sits — Brazil’s nota fiscal, for instance, has no direct English equivalent and isn’t something you can substitute with an ordinary invoice just because the client is abroad.
• Cross-border B2B work is usually handled under the reverse charge. For a client in the EU, VAT liability typically shifts to them rather than sitting on your invoice — the tax obligation doesn’t disappear, it just moves to the buyer’s side. Your invoice reflects that; it doesn’t add VAT you’d add for a domestic client.
• Keep numbering continuous across the trip. Restarting a sequence per country, or per week you’re offline, creates exactly the kind of gap that makes an invoice look wrong to an accountant even when nothing was actually wrong.
• Send the invoice the moment work is delivered. A three-day delay because you were between train stations is a three-day delay in getting paid, and it compounds if a payment cycle only runs weekly.

Getting paid across currencies and banks

For a cross-border payment, the exchange rate you’re quoted matters more than the fee shown on the transfer.

For a typical business cross-border payment, the total cost runs to roughly 1.6% of the amount sent. About 1.4 percentage points of that, close to seven-eighths of the total, is the margin built into the exchange rate rather than a visible charge. Visible fees do shrink as the payment gets larger; the margin mostly doesn’t, sitting in a band of roughly 0.7% to 1.1% regardless of size. A transfer advertised as “no fee” can still cost you more than one with a fee attached, if the rate behind it is worse.

That margin also varies by region more than most people expect. Corridors within Europe tend to run near the low end, close to 1% total cost; corridors into some other regions, sub-Saharan Africa among them, can run as high as 3.5%. If your client’s bank routes the payment through a different region than you’d assume from their address, the real cost can shift without anyone telling you.

A couple of things worth keeping straight when you’re comparing numbers you read online:

• A provider that won’t disclose the rate it used, measured against the interbank rate for that day, doesn’t count as transparent — that’s the international convention for measuring this.
• Retail remittance pricing and business payment costs are different measurements. Headline figures you’ll see for sending money home as an individual (running considerably higher, on the order of 6% or more) describe a different kind of transfer and shouldn’t be used to judge what a client-to-freelancer business payment should cost.
• A widely cited target of getting the average cost down to 1% by the end of 2027 is currently assessed as unlikely to be met — plan around today’s cost.

Practically: ask whoever is sending the payment which rate they used, check it against the mid-market rate for that day, and push back on that gap. The fee rarely tells you much.

When the client pays through a contractor platform

Some clients, especially the ones paying contractors in a dozen countries at once, don’t wire money to you directly at all. They route the contract, the onboarding and the payment through a contractor platform, and you deal with the platform instead of the client’s finance team.

4dev.com is one example of this kind of setup: a Contractor Platform operating across 150+ countries, built around a Contractor of Record model for the engagement. In practice that means you complete onboarding yourself — identity details, country, payment information — with the platform checking your documents and status as you go, rather than a back-and-forth over email with someone in accounting. The client, for its part, signs one agreement that covers every contractor it works with through the platform, wherever they’re based, instead of a separate contract per person.

Worth knowing what this doesn’t cover, so you’re not surprised later: it’s built for contractor engagements. There’s no employer-of-record option for putting someone on staff (that’s planned for 2027) and no payroll for employees. If a client asks you to complete an onboarding flow through a platform instead of sending a contract by email, this is usually why: they’re treating the relationship as a contractor engagement, administered through the platform’s own document flow.

Tax while travelling

Where you were physically sitting when you did the work tends to matter more than where the client happens to be incorporated: US tax law sources compensation for services to the place where the services were performed. A non-US person who did all the work outside the United States generally triggers no 1099, no 1042-S and no withholding on that payment, provided the payer already holds valid documentation from you.

Without that documentation on file, the default assumption runs the other way. A payer facing an undocumented foreign payee is pushed toward backup withholding (24% as a default, or 30% specifically for a foreign payee) until the right form shows up. That’s the practical reason to send the W-8BEN before the first invoice rather than after a payment comes back lighter than expected.

None of this applies if you’re the client’s own citizen working abroad. A US citizen or green-card holder is still a US person wherever they’re physically sitting, full stop, and gets a 1099 and a W-9 request like anyone working from home would.

On the reporting side, the threshold that decides whether a US client even has to send you a 1099 at all moved from $600 to $2,000 for payments made from 1 January 2026, and it’s now adjusted for inflation going forward. That’s a federal number. Some states set their own reporting threshold and didn’t move it when the federal one changed, so clearing the federal bar doesn’t automatically mean no one anywhere has to report the payment.

A pre-trip checklist

Go through this before departure day.

• Signed contract or statement of work, saved as a PDF you can open offline.
• Invoice template pre-filled with your registered name, address and tax ID.
• Whatever tax form your client’s country expects from you — a W-9 if you’re a US person paying a US client, a W-8BEN if you’re not, with the signing date noted so you know when it expires.
• Proof of your own self-employment registration, in whatever form your home country issues it, if a client or intermediary is likely to ask.
• A confirmed answer on whether this client pays you directly or through a contractor platform, and who you actually contact if a payment doesn’t land on time.
• A note of which payout details you’re giving this particular client, and whether anything changes if you move to a different country mid-trip.
• Awareness of the exchange-rate margin on your usual payment route, so a free transfer doesn’t surprise you.
• Your last two or three invoices, in case a new client, their bank, or a platform onboarding flow asks for a payment history.
• A backup way to reach your bank’s or platform’s support desk from wherever you’re headed, in case the usual phone number or app doesn’t work at your destination.

FAQ

My client is a US company but I’ve never set foot in the US — do I need to file anything with the IRS myself? No, not in the ordinary case. You give the client a signed W-8BEN, or a W-8BEN-E if you invoice through a company, so they have it on file — it isn’t something you send to a tax authority yourself. Because compensation for services is sourced to where the work was actually done, a non-US person who did everything outside the US generally isn’t the subject of a 1099 or withholding, as long as that form was on file before the first payment rather than chased down afterward.

My transfer had no listed fee — why did I still get less than I invoiced? The fee line and the real cost of moving money aren’t the same thing. For a typical business cross-border payment, the visible fee is only a small share of the total cost; most of it sits in the margin built into the exchange rate. A transfer with no visible fee can still use a worse rate than the interbank rate for that day, which is where the missing amount usually went. Ask which rate was used and compare it, rather than judging the cost by the fee alone.

Does anything change for me if the client pays through a contractor platform instead of wiring me directly? Mostly who you talk to. You’ll typically complete an onboarding and document flow with the platform rather than emailing the client’s finance team, and payment documents get generated by the platform per payment instead of you drafting each invoice from scratch. The underlying paperwork — a contract, a tax form where one applies, proof of who you are — doesn’t go away. It just gets collected in one place instead of scattered across email threads.