Free FBAR Calculator
See whether combined foreign account balances may trigger FBAR (FinCEN Form 114) filing, then organize the balances and exchange rates behind your estimate.
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Aggregate means the sum of the peaks
The threshold is an aggregate of maximums, and those two words pull in different directions. Each account contributes the highest value it reached at any point in the year, and the peaks are added together, so the total can describe a position nobody ever held. Move $9,000 from one foreign account to another in June and both accounts peak at $9,000, the aggregate reads $18,000, and the filing requirement attaches to money that was a single balance the whole time. Signature authority counts the same way ownership does, which is how someone who can sign on an employer account abroad ends up filing.
Three accounts, none of them large: a euro current account peaking at EUR 4,200, a sterling savings account at GBP 3,100, and a rupee account at INR 450,000. Take year-end rates of 1.08, 1.27 and 0.0117 dollars. That gives $4,536, $3,937 and $5,265, an aggregate of $13,738, while no single account rose above $5,300. The rate matters as much as the balance: the FinCEN instructions convert each maximum at the Treasury rate for the last day of the calendar year, so one rate applies across the whole year and the rate on the day an account peaked plays no part.
A filed tax return does not cover this, and the two are easy to conflate. FinCEN Form 114 is filed through the BSA E-Filing System, due 15 April with an automatic extension to 15 October that nobody has to request. Form 8938 is the one that travels with the return, written under a different statute with different thresholds, and a single account can require both. A preparer nobody told about a foreign account files neither, which is the usual route to a late filing.
The two thresholds this worksheet tests
The worksheet totals what you enter and measures it against two separate US reporting thresholds. Both were read out of current guidance and are quoted below.
What it assumes
- Each balance is converted to US dollars with the rate you supply beside it, one for the maximum balance and one for the year-end balance.
- The FBAR test sums the maximum value of every account listed and compares that total with $10,000.
- The Form 8938 test runs when you switch it on, measuring the year-end total and the highest total against the pair of thresholds for your filing status and residence.
- Filing status and whether you live abroad are taken as you select them.
What it leaves out
- Exchange rates. The worksheet ships none, and the FBAR expects the Treasury year-end rate.
- Whether a given account or asset falls in scope, which is a classification question with rules of its own.
- Signature-authority-only accounts, joint ownership apportionment and the consolidated filing exceptions.
- Filing. Both reports go through their own systems on their own deadlines.
Where the numbers come from
- FBAR threshold of $10,000
- Published sourceAn FBAR is required where the aggregate value of the foreign financial accounts exceeded $10,000 at any time during the calendar year reported. Report of Foreign Bank and Financial Accounts (FBAR), IRS
- Form 8938 thresholds
- Published sourceLiving abroad: more than $200,000 at year end or $300,000 at any time, doubling on a joint return. Living in the United States: $50,000 or $75,000, and $100,000 or $150,000 on a joint return. Summary of FATCA reporting for U.S. taxpayers, IRS
- The country and currency list
- Our own assumptionA stored list used to prefill a currency against each account. It carries no exchange rate.
Assumptions and sources checked 5 September 2026. Published figures move on their own schedule, so confirm anything you rely on against the authority that issues it.
How it works
- 01
Add each foreign account
Bank, securities, or other financial accounts you hold or sign for.
- 02
Enter max balance
The highest value the account reached during the year.
- 03
Convert to USD
Enter the USD exchange rate you plan to use, then confirm the source before filing.
- 04
See threshold status
Whether combined balances likely trigger the filing requirement.
Related guides
How to Determine the Maximum Value of a Foreign Bank Account for FBAR
The whole answer rests on maximum value, which people get wrong by reading a December statement instead of the in-year peak.
Read the guideHow to Fill Out FBAR (FinCEN Form 114) Step by Step
The direct next action when the threshold test comes back as a filing obligation.
Read the guideHow to Handle Tax Form 8938 Without Missing FBAR
A separate reporting threshold the tool leaves untested, so you can clear FBAR and still owe a Form 8938.
Read the guideFrequently Asked Questions
When do I need to file an FBAR (FinCEN Form 114)?+
What accounts count toward the $10,000 threshold?+
How do I convert foreign currency balances to USD?+
What records should I keep?+
Where are my account entries saved?+
How should I use this FBAR estimate?+
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