Best budgeting app for multiple currencies: expats, nomads and cross-border households

Two kinds of multi-currency support

An app either converts foreign amounts into one home currency for totals and reports, or it keeps each currency in a separate silo and leaves conversion to you. Converting apps give one net worth and one spending total; siloed apps avoid exchange-rate noise but make it harder to see the whole picture. A third group simply assumes everything is in one currency, which is the dangerous one for expats.

This is research from official vendor pages and help articles read on 29 October 2026, not firsthand testing. We have not connected a bank, invited a partner or run a forecast in any of these apps for this guide.

How each app handles currencies

Worked example: a USD household with a euro account

Assume your primary currency is USD, you hold a euro account, and you pay EUR 2,000 rent from it. For illustration we assume 1 EUR = 1.10 USD on the payment date; that rate is our assumption, not a quoted market rate.

In a converting app (Lunch Money or PocketSmith), the rent is stored as EUR 2,000 and appears in USD totals as about $2,200, using that day's stored rate. If the euro moves later, last month's rent stays at last month's rate.

In YNAB, you keep a USD plan and a EUR plan. The rent sits only in the EUR plan as EUR 2,000. When you move dollars to the euro account, you record what left the USD plan and what arrived in the EUR plan through a Currency Transfer category, so the fees and rate are captured by the two amounts.

In Monarch, the payment would appear as "$2,000", understating it by about $200 at our assumed rate, and a EUR 10,000 balance would be added to USD balances as if it were $10,000. Monarch gives its own example: 10,000 CAD and 10,000 USD show as $20,000 net worth.

Who fits which app

• Nomads spending in several currencies each month: a converting app. Lunch Money lists over 160 currencies and per-day rates; PocketSmith also converts and adds forecasting.
• Expats with a home-country account and a local account: PocketSmith if you also want projections; note its Foundation plan connects banks from only one country, while Flourish and Fortune list all countries.
• Two clearly separate money lives (for example a US salary and a euro rental): YNAB's plan-per-currency approach is clean if you do not need a combined net worth.
• Anyone with non-USD and non-CAD accounts: skip Monarch for those accounts, by its own guidance.

A setup checklist for cross-border budgets

• Choose the base currency you think in, not the one you hold most of.
• Check that each foreign bank can connect from your country plan (see our country-by-country guide), or plan on file imports.
• Decide how you will treat transfers between currencies so they are not counted as spending.
• Card purchases abroad usually post in your card's currency after conversion; YNAB suggests entering an estimate and correcting it to what the bank shows.
• Reconcile monthly against the bank's own figures, since rate sources differ.

Gaps

PocketSmith's articles did not name its exchange-rate provider, so rates may differ slightly from your bank's. Lunch Money's price is not stated here; check its pricing page.