This task is one section of Odoo accounting: nine everyday tasks, step by step, with 8 related tasks on one page.
1. Enable more than one currency
Go to Accounting → Configuration → Currencies and turn Active on for one currency a real customer will pay in. Activating the currency is the switch. There is not a separate “allow foreign currency” box.
2. Enter a rate
Open that currency, go to Rates, and add a line with the date and the rate from your accountant or bank. Do not invent a rate.
3. Use it on one draft
Create a draft customer invoice in that currency. You should see the foreign total and an amount in the company currency.
4. Update the rate when it changes
A new rate should affect later documents. Do not expect it to rewrite a posted invoice. Check the next draft after you change the rate.
5. Frequently asked questions
Which rate is correct?
The rate your accountant or bank says to use. The software will accept a wrong number.
Will old invoices change when the rate changes?
Posted invoices should keep the rate they were posted with. Check a new draft.
Do I activate every currency?
Activate the ones you invoice or pay. Extra currencies only add noise.
6. Related articles and next steps
Odoo documents currencies and rates in the Odoo 19 multi-currency page.
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