Multi-currency support

Every tab has a base currency — this is the currency used for balances and settlements. When you create a tab, you choose the base currency (usually your home currency).

You can log expenses in any currency. Settled Up converts the amount to the base currency using the exchange rate at the time the expense is created.

Settled Up uses exchange rates from the European Central Bank (ECB), updated daily. These are the same rates used by banks and financial institutions across Europe.

When you add a foreign currency expense:

1. 1 The current ECB rate is fetched automatically.
2. 2 The rate is stored with the expense so it does not change later.
3. 3 The converted amount in the base currency is shown alongside the original amount.

You can see the exchange rate used on each expense in the expense list (shown as a small note below the amount).

Settled Up supports all currencies published by the ECB, including:

Your tab's base currency is GBP. You are on holiday in Denmark and pay DKK 500 for dinner.

1. 1 You add the expense as DKK 500.
2. 2 Settled Up fetches the current DKK → GBP rate (for example, 0.1162).
3. 3 The expense is recorded as DKK 500 (≈ £58.10).
4. 4 Everyone's share is calculated in DKK, then converted to GBP for balance calculations.

This is deliberate — it means your balances stay stable and predictable. If you need to correct an exchange rate, you can delete and re-add the expense to fetch the current rate.

If Settled Up cannot fetch an exchange rate (for example, due to a temporary service outage), the expense will not be saved. You will see an error message asking you to try again in a few minutes.

This is a safety measure — Settled Up will never store an expense with an incorrect exchange rate.