A lunch in euros, a software subscription in dollars, a hotel in pounds — and a bank account in a fourth currency. Spending across currencies is normal now, whether you travel, work remotely or invoice clients abroad. The problem starts at the end of the month, when you try to add it all up.
Here is how to keep multi-currency expenses accurate without turning every receipt into a maths exercise.
Rule 1: always record the original amount
The receipt is the source of truth, and it is written in the currency you paid in. Record that amount and that currency — not a converted figure you worked out in your head. If you ever need to prove the expense, check a refund or claim a reimbursement, the original amount is what will be asked for.
Expio does this automatically: when you scan a receipt, the amount is kept in the currency on the receipt, and the exchange rate used for conversion is stored alongside it.
Rule 2: choose one base currency
To see a meaningful total, everything has to be converted into a single currency. Pick the one that matters for your decisions:
- the currency your salary or income arrives in,
- the currency of your main bank account, or
- the currency you file taxes in.
In Expio this is the Currency setting: totals, budgets and reports are all shown in it. There are 16 supported currencies, including USD, EUR, GBP, TRY, SEK, CNY, JPY and CHF. The app suggests one based on your device's region on first launch, and you can change it at any time.
Rule 3: accept that "the rate" isn't one number
Exchange rates move every day, and different sources use different rates. The amount your card is charged is set by your card network and bank on the day the transaction is processed, sometimes with a foreign transaction fee on top. A reference rate for the same day will usually be close, but rarely identical.
For personal budgeting, that small difference doesn't matter — what matters is seeing roughly where your money goes. For reimbursements and bookkeeping, it can. In that case:
- Reconcile with your statement. Import your bank or card statement and you'll have the amount actually charged in your account currency, next to the receipt you scanned. Expio marks statement transactions that match receipts you already scanned, so you don't count them twice.
- Keep both numbers. The receipt shows what you paid; the statement shows what it cost you. Together they explain any difference.
Rule 4: watch out for "pay in your home currency?"
Abroad, card terminals and ATMs often offer to charge you in your home currency instead of the local one. This is called dynamic currency conversion, and the rate it uses frequently includes a markup. Paying in the local currency and letting your card handle the conversion is usually the better deal — and it also keeps your receipt in the local currency, which makes rule 1 easy.
Rule 5: be careful at tax time
Tax authorities generally have rules on which exchange rate to use for foreign-currency expenses. Converted totals in an expense app are a helpful overview, not an official figure. Expio's Tax center flags receipts that were converted at approximate rates, so you know which entries to double-check with your accountant.
A simple setup
- Set your base currency once.
- Scan receipts as they are, in whatever currency they are.
- Import your card statement once a month to see what was actually charged.
- Export a report in your base currency — PDF to read, Excel or CSV to work with.
Multiple currencies don't have to mean multiple spreadsheets. Record the truth, convert for the overview, reconcile when it counts.
Expio supports 16 currencies and converts your totals automatically. Download Expio and set your base currency in seconds.
