Splitting a Bill in a Different Currency

Last updated: September 6, 2026

One person pays a restaurant bill abroad on their card. Everyone else pays them back at home. It sounds like a single division and it is usually four different answers, because everybody used a different exchange rate from a different moment, and one of them had a fee they did not notice.

The short version

Agree one rate and one currency before anybody pays anything back. The fairest rate is the one the payer's card actually charged, because that is the money that genuinely left the group. Never accept the terminal's offer to charge you in your home currency — it is the worst rate on offer.

Why everybody gets a different number

There is no single exchange rate. There is the mid-market rate you see when you search, the rate your bank applied when it settled, the rate the card network used, and whatever the terminal offered in the restaurant. On a €200 bill those can differ by several pounds — small in absolute terms, and large enough that four people arrive at four numbers all believing they are right.

The disagreement is not about arithmetic. It is that nobody said which rate counted.

Use the rate the payer was actually charged

One person's account was debited a real amount in the home currency. That number is not an estimate and not disputable: it is what the group collectively spent. Splitting that figure leaves the payer neither up nor down, which is the only obviously fair outcome.

The alternative — everyone converting the foreign total at whatever rate they find — leaves the payer carrying the difference between their real rate and the group's imagined one. It is usually a pound or two. It is also always the same person paying it.

The one cost is that the payer must wait for the transaction to settle before saying what is owed. A pending amount can change. Waiting a day beats collecting twice.

Dynamic currency conversion: always decline

When a foreign terminal asks whether you would like to pay in your home currency, it is offering to do the conversion itself — at a rate it chooses, typically several per cent worse than your bank's. This is dynamic currency conversion, and the polite-sounding question is the most expensive one on the machine.

Always choose the local currency. Your bank converts at a rate you can look up afterwards, which is both cheaper and easier to split.

Foreign transaction fees

Many cards add two to three per cent on foreign spending. Whether that is a shared cost is a genuine question with two defensible answers.

Shared. The fee exists only because the group chose somewhere that charged in another currency, so it is part of the cost of the meal.
The payer's. They chose which card to use, and somebody else at the table had one without the fee.

Either is fine. What is not fine is deciding after the fact, when one person is already out of pocket. Say it at the table: “I will send the total my card was charged, including the fee.”

Splitting the items, not just the total

Converting the total and dividing works only when splitting evenly. If people are paying for what they ordered, convert once at the end — work out each share in the local currency, then apply the single agreed rate to each share.

Converting each item separately and rounding as you go produces shares that do not sum to the total, and the difference lands on whoever calculated last.

A worked example

A €180 bill. The payer's card settles at £154.80, including their foreign transaction fee. Four people, split by item, with shares of €60, €50, €40 and €30. Each is multiplied by 154.80 ÷ 180 = 0.86: £51.60, £43.00, £34.40 and £25.80. They sum to £154.80 exactly, and the payer is square.

Tips and service in a foreign currency

Convert the tip at the same rate as everything else, and split it in the same proportion as the food. What the tip should be in the first place has a different answer in every country — see how much to tip, country by country, and service charge versus tip for whether it is already on the bill.

What to agree at the table

Who is paying, and on which card.
That everyone settles in one currency — usually the payer's.
That the rate is whatever their card charged, not one looked up later.
Whether the foreign transaction fee is shared.
Decline the terminal's home-currency offer.

MyShare keeps the receipt in its original currency and converts once, with one rate applied to everybody's share, so the shares always sum back to the amount that actually left the account.

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