Cash or card on a trip: how to record each so the split is fair
For a card payment, note the local amount and, once it appears, the amount your bank actually charged. For cash, note that it was cash and keep a record each time you change money or use an ATM, so you can work out your own average rate. Record these at the time, and conversion at the end is easy.
Why it matters how you paid
Two people can spend the same 50 euros and pay different amounts in real terms. A card payment is converted by the bank at its own rate, usually with a fee. Cash was bought earlier at a rate that depends on where and when it was changed. If the group converts everything at one fixed rate, one of them ends up out of pocket. Recording how each expense was paid lets each be converted at the rate that fits it.
What to record for each way of paying
- Card. The local amount, who paid and who it was for. Later, the amount your statement shows in your home currency. That charged amount, not a market rate, is what the payment really cost.
- Cash. The local amount, who paid and who it was for, marked as cash.
- Changing money or an ATM. How much you handed over (or the amount debited from your account, with the fee) and how much cash you received. Do it each time. Several exchanges are fine; they are averaged.
- Paying in the home currency. Nothing to convert. Just the amount.
A worked example of the cash side
You withdraw ¥30,000 at an ATM and your bank debits 200.00 USD including the fee. Later you withdraw ¥15,000 and are debited 100.00 USD. You handed over 300.00 USD in total and received ¥45,000, so your average rate is 300 ÷ 45,000 = 0.006667 USD per yen.
A ¥12,000 dinner you paid for in cash then costs 12,000 × 300 ÷ 45,000 = 80.00 USD. It is not what a market rate would have given, and it is not the figure on anyone else’s card. It is what that cash really cost you.
A short checklist for each day
- Every cash purchase: amount and who it was for, marked as cash.
- Every card payment: local amount now, charged amount later.
- Every time you get cash: what you gave and what you got.
- At night: compare with your card app and wallet and add what is missing.
How Trip Split does this
Each expense keeps its original currency and how it was paid. For a card payment you can enter the amount actually charged. For cash, you record your exchanges and Trip Split converts at your own average rate. Only when neither is known does it fall back to the day’s rate, and it marks the expense as estimated until the real figure replaces it. For the full method, see how to split trip costs in different currencies and how to split a group trip when someone pays cash.
Common questions
What should I write down for a card payment abroad?
The amount in the local currency, who paid, and who it was for. When your statement shows the amount actually charged in your home currency, add that too, because it is the most accurate figure.
What should I write down for cash?
Note that it was cash and the amount in the local currency. Separately, record each time you change money: how much you handed over and how much you received. That gives you your own average rate.
How do I treat an ATM withdrawal?
Like changing money. Use the amount your bank took from your account, fees included, as what you handed over, and the cash you received as what you got.
What if I do not know the rate or the statement amount yet?
Use the day’s market rate as an estimate and mark the expense as estimated. Replace it with the real figure when you have it.
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