Every overseas engagement starts with a question most freelancers answer by accident: which currency goes on the invoice? It looks like a formatting choice. It is actually a decision about who absorbs every exchange-rate movement between now and the last payment, and on a long retainer that can be worth more than a rate increase.
There is no universally right answer. There is only a deliberate one, made per client, with the risk understood before the first invoice goes out.
Whether you invoice in your currency or your client’s decides who carries the exchange-rate risk: your currency moves it to the client, theirs moves it to you. Bill in yours when the client can easily pay in it or your margins are thin. Bill in theirs when it wins or keeps the work, then protect yourself with a review clause, shorter payment terms and a record of what actually landed.
Who carries the exchange-rate risk
Exchange-rate risk is the chance that a currency moves between agreeing a price and converting the payment, changing what the money is worth to you. Once a price is agreed in one currency, someone has to convert it. Whoever converts carries two costs: the movement in the exchange rate over time, and the margin their bank or payment provider takes on each conversion.
Bill in your currency and your client carries both. You invoice €4,000, and each month they buy whatever amount of their own money it takes to send exactly €4,000. Your income is fixed. Their cost moves.
Bill in theirs and you carry both. You invoice $4,000, and what arrives in euros depends on the rate on the day it converts and on the margin taken along the way. Their cost is fixed. Your income moves.
On a single invoice the difference is usually small. On a year-long retainer it compounds. A 5% drift against you on $4,000 a month is $200 a month, or $2,400 across the year, and nobody sent you a notice saying your pay had been cut.
When to invoice in your own currency
Billing in your home currency is the lower-risk default for you. It works best when:
- The client already pays foreign suppliers. Larger companies with a finance team and a multi-currency account often don’t care which currency you bill in. If they don’t mind, take the certainty.
- The engagement is short. On a four-week project the rate barely moves, but you still avoid a conversion margin on your side.
- Your margins are thin. If a 3% swing would turn a fair project into a loss, you can’t afford to carry the risk.
- Their currency is volatile. If the client’s currency regularly moves several percent in a quarter, being paid in it is a bet you didn’t choose to make.
The cost is friction on the client’s side. A small business that has never paid abroad may see an unfamiliar currency, have no idea what it will cost them, and hesitate. That hesitation is a real cost, and sometimes it loses you the work.
When to invoice in your client’s currency
Billing in the client’s currency is a commercial decision, and often a good one:
- It wins the work. Clients compare quotes in their own money. A price in their currency is easy to approve; a price in yours needs a conversion and a conversation.
- The market sets prices in that currency. If you sell into a market where everyone quotes in USD, quoting in euros makes you the awkward one. Pricing for international clients covers setting the rate itself.
- The client is paying through a domestic route. Many transfer services give you local receiving details in the client’s country, so they pay you like a local supplier and the conversion happens on your side at a rate you chose.
- You spend in that currency too. If some of your costs, such as software subscriptions or contractors, are also billed in USD, earning in USD gives you a natural hedge.
The cost is the risk you now carry. The rest of this post is about managing it.
How to carry the risk without getting hurt
If you invoice in the client’s currency, a few habits keep the exposure small.
Write a review clause into long engagements. For retainers and contracts longer than about six months, agree that the fee will be reviewed if the exchange rate moves more than an agreed band, say 5%, from the rate on the day you signed. You may never invoke it, but it turns a painful rate conversation into a contractual one.
Shorten payment terms. The longer the gap between invoice and payment, the more room the rate has to move. Due on receipt or Net 14 exposes you to a fortnight of movement instead of a month or more. Our post on getting paid by overseas clients covers how to state the due date so different countries read it the same way.
Choose where the conversion happens. If you receive the payment in the client’s currency and convert it yourself through a low-margin service, you control the cost. If the client’s bank converts it on the way out, you inherit their margin. Before you agree a payment route, check what it costs with the forex markup calculator: enter what you billed, what landed and the date, and it separates the rate movement from the fee.
Hold the currency when it makes sense. A multi-currency account lets you keep USD as USD and convert when you need the money, rather than on whatever day the client happened to pay. That isn’t speculation. It just means you choose when to convert instead of accepting the rate on the day it landed.
Put the currency in writing, every time
Whichever way you go, remove the ambiguity:
- Name the currency in letters. Write USD, CAD, AUD or SGD, not ”$”. At least six currencies use a dollar sign, and a misunderstanding here is expensive to unwind.
- Put it in the contract and on every invoice. The contract fixes the agreement; the invoice is what the client’s accounts team actually reads. Contracts for clients you never meet covers what else a cross-border agreement should pin down.
- Say who pays the transfer fees. If you want the full invoice amount to land, say so, and ask for the OUR charge instruction on bank wires.
- Keep the currency consistent. Switching currency mid-engagement creates two reference points and an argument about which one the rate review uses.
Record what the payment was really worth
Invoicing in a foreign currency adds one bookkeeping step: when the money arrives, it is worth what it was worth that day in your home currency. That is rarely the same as the value on the invoice date, and the difference is a gain or loss you should know about.
The historical currency converter gives you the European Central Bank reference rate for any date, so the figure you record comes from a source you can cite. If your payment provider’s rate looks suspiciously far from it, what your payment provider actually keeps walks through how to work out the hidden margin.
This is general guidance, not tax or accounting advice. How foreign exchange gains and losses are treated varies by country, so confirm the rules with a local accountant.
A quick way to decide
For each new overseas client, run through three questions:
- Can they pay easily in my currency? If yes and they don’t object, bill in yours.
- Would billing in mine cost me the work? If yes, bill in theirs, and accept the risk on purpose.
- How long will this run? Anything past six months in a foreign currency needs a review clause and a regular check of what’s actually landing.
Frequently asked questions
Can I put two currencies on one invoice?
You can show a converted figure for reference, but one currency should be clearly stated as the amount due. Two payable amounts invite the client to pay whichever is cheaper on the day. If you add a reference conversion, label it as indicative and say which rate and date it uses.
What exchange rate should I use to convert a foreign invoice?
For your own records, use a published reference rate, such as the European Central Bank rate, for the date the payment landed. That gives you a figure you can cite and reconcile against your bank statement. Your accountant may prefer a specific source or date convention, so confirm it once and apply it consistently.
Do I need a multi-currency bank account to invoice in another currency?
No, you can invoice in any currency and have the payment converted on arrival into your normal account. A multi-currency account helps when you’re paid regularly in one foreign currency, because you can hold it, pay costs in it, and choose when to convert rather than taking the rate on the day it landed.
Is it unprofessional to invoice an overseas client in my own currency?
No. Billing in your own currency is common and perfectly professional, especially with larger clients who already pay foreign suppliers. The only real downside is friction: a small client unused to paying abroad may hesitate. State the currency clearly in the quote so it never arrives as a surprise.
Where Billable comes in
Billable keeps the two questions separate. Set the currency on each invoice, or on a project so that every invoice under it starts out right, and your client is billed in the money they recognise. Your dashboard converts everything back to your home currency at rates refreshed daily, so your totals add up to something meaningful across every client.
When an invoice is paid, record what actually arrived and Billable shows you the gap between the reference rate and what your bank really gave you. That makes it easy to spot the client whose currency has quietly cost you a month’s fee. It’s free for your first active project, then one flat plan with no seats, no tiers and no per-user fees. See how multi-currency billing works.