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FBAR calculator

Convert each foreign account's highest balance to US dollars at the Treasury's year-end rate, rounded up the way FinCEN asks. Free, no sign-up, and it runs in your browser.

Your accounts

Rates: US Treasury Reporting Rates of Exchange, record date 31 December 2025. The numbers you type stay in your browser. We don't send or store them.

  1. Account 1

    In US dollars

    Not converted

    Treasury rate: 0.851 EUR per US$1 (Euro Zone-Euro, 31 December 2025). Divided, then rounded up to the whole dollar.

Enter an account's maximum value to see it in US dollars.

These figures are calculated from the values you type, using the US Treasury's year-end exchange rates. They aren't tax or legal advice or a substitute for advice from a tax professional or attorney, and they don't tell you whether you need to file. An FBAR has to cover every foreign financial account you have a financial interest in or signature authority over, including any you didn't enter here. Check the figures against your statements. Borderless Budget isn't affiliated with FinCEN, the IRS or the US Treasury.

Who has to file an FBAR? (FinCEN)

Rates last checked against Treasury on 24 October 2026. See the rate tables.

How the calculator works

For each account, type its highest balance during the year in the account's own currency. FinCEN describes the maximum value as "a reasonable approximation of the greatest value of currency or nonmonetary assets in the account during the calendar year", and says periodic statements may be relied on if they fairly reflect that maximum.1

The calculator converts it at the Treasury Reporting Rate of Exchange for 31 December of the year you pick.1,2 Treasury quotes each currency as units per US dollar, so the balance is divided by the rate. A US dollar account isn't converted.

Each result is rounded up to the next whole dollar, so $15,265.25 becomes $15,266, and a negative balance counts as $0.1 When Treasury publishes no rate for a currency, the calculator says so and asks you for a verifiable rate and its source, which is what FinCEN's instructions call for. It never fills in a rate itself. Occasionally Treasury's table has two rows for one country that disagree. On 31 December 2024 it listed Panama at 283.37 under "Panama-Balboa" and 1.0 under "Panama-Dolares", and the balboa is pegged 1:1 to the dollar. When that happens the calculator shows the listed rate, explains the conflict and asks you for the rate you use and its source.

For a joint account, enter the account's full highest balance, not your share: each joint owner reports the entire value of the account.3

The total adds up the dollar values shown. It covers only the accounts you enter. For how maximum values work in detail, read FBAR maximum account value, explained.

What it doesn't do

It doesn't decide which of your accounts count as foreign, whether you're a US person, or whether you need to file. It doesn't file anything either: FBARs are filed electronically with FinCEN through the BSA E-Filing System.4 If you're unsure about any of it, a tax professional who works with Americans abroad can confirm it for you.

For accounts that raise their own questions, see Wise, Revolut and the FBAR and foreign pensions and the FBAR. For how the FBAR differs from Form 8938, read FBAR and FATCA explained. Tax preparers can see what the calculator gives their clients.

For subscribers: the FBAR report

Skip the twelve statements per account

The slow part of an FBAR is finding each account's highest balance. Borderless Budget's FBAR report works out that balance for each account you've connected or entered, says how it was found, and converts it at these Treasury rates, for you to check against your statements. You choose which accounts go in, then download a CSV or print it.

It's available to subscribers once their first payment has gone through. During the 30-day free trial you can set up the report, but the amounts, the total, the CSV and the print view stay locked until then.

Get started

FBAR calculator: frequently asked questions

Sources

  1. 1. FinCEN, BSA Electronic Filing Requirements for the Report of Foreign Bank and Financial Accounts (FinCEN Form 114), v1.4, January 2017, p.10. Still linked as the current line item instructions from FinCEN's FBAR page, accessed October 2026. Maximum value, conversion at the Treasury rate for the last day of the calendar year, another verifiable rate when Treasury has none, rounding up, negative values as zero.
  2. 2. US Treasury, Bureau of the Fiscal Service, Treasury Reporting Rates of Exchange, dataset and API, accessed 24 October 2026. Released quarterly; rates are foreign currency units per US dollar. The calculator's rates were generated from the API on the date shown under it.
  3. 3. IRS, Publication 5569, Report of Foreign Bank & Financial Accounts (FBAR) Reference Guide, Rev. 3-2022, p.5. Jointly held accounts: each person must report the entire value of the account.
  4. 4. FinCEN, Report Foreign Bank and Financial Accounts, accessed October 2026. Filing through the BSA E-Filing System.