If you hold foreign currency balances through Wise and those balances, combined with any other accounts you keep outside the United States, exceeded $10,000 at any point during the calendar year, you need to file an FBAR. Wise FBAR reporting means submitting FinCEN Form 114 electronically to the Treasury Department’s Financial Crimes Enforcement Network, separately from your tax return.1Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) The filing itself owes no tax. The penalties for skipping it are another matter.
Why Wise Balances Count as Foreign Accounts
The test is not where you live or where Wise is incorporated. It is where the money actually sits. A foreign financial account is one maintained at an institution located outside the United States.2eCFR. 31 CFR 1010.350 – Reports of Foreign Financial Accounts When you hold euros, pounds, Australian dollars, or any other non-USD balance on Wise, those funds are held at financial institutions in the relevant country. Your euro balance sits in a European bank. Your pound balance sits in a UK bank. The local banking details Wise gives you (an IBAN, a UK sort code, an Australian BSB) reflect real accounts at real foreign institutions, which is exactly what the FBAR is designed to capture.
A one-time transfer that passes through Wise without you holding a balance does not create a reportable account. The FBAR applies to balances you maintain, not to money that briefly transits the platform.
What About a USD-Only Balance?
Wise is authorized to operate in most U.S. states, and in some states the service is sponsored by Community Federal Savings Bank, a domestic institution. If your Wise account holds only U.S. dollars and those funds are maintained at a U.S.-based bank, that specific balance may not qualify as a foreign financial account. The determination turns on where the institution holding the funds is located. If you hold both USD and foreign currencies, the foreign currency balances still count toward your FBAR threshold. Wise’s account statements and the local banking details attached to each currency help clarify where a given balance is held.
How the $10,000 Threshold Works
The $10,000 figure is an aggregate across all your foreign accounts, not a per-account limit.3Internal Revenue Service. Comparison of Form 8938 and FBAR Requirements A Wise euro balance worth $6,000 plus a separate foreign bank account worth $5,000 puts you over the line, even though neither account hit $10,000 on its own.
It is also a peak-value test, not a year-end test. If the combined balance briefly crossed $10,000 for a single day, you must file for the entire year and report every foreign account, including ones that only ever held small amounts. This catches people off guard. A freelancer who receives a large payment in pounds, converts most of it to dollars within a week, and ends the year with a modest balance may still owe an FBAR for the day the payment landed.
Your filing obligation does not depend on where you live. A U.S. citizen abroad has the same requirement as one living in Ohio. “U.S. person” covers citizens, residents, and domestic entities, and either owning the account or holding signature authority over it is enough to trigger the rule.1Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR)
What You Need From Wise to Complete the Form
For each reportable Wise balance, FinCEN Form 114 wants three things: the name and address of the foreign financial institution, the account number, and the maximum value of the account during the calendar year in U.S. dollars.
The institution name and address correspond to whichever overseas entity holds your currency balance. You can find this in your account statements or in the local banking details Wise provides for each currency. The account number is the foreign number tied to that specific currency balance, such as an IBAN or local account number. If Wise assigns separate account numbers to different currencies, treat each one as a distinct account on the FBAR.
Figuring out the maximum value is where most of the work happens. Review your transaction history or statements for each currency and identify the single highest balance the account reached during the year. Convert that peak balance into U.S. dollars using the Treasury’s Financial Management Service exchange rate for December 31 of the reporting year, regardless of when the maximum actually occurred. If no Treasury rate exists for a particular currency, use another verifiable exchange rate and note the source. Round the final dollar amount up to the next whole dollar, so $15,265.25 becomes $15,266.4Financial Crimes Enforcement Network. Reporting Maximum Account Value
If you and your spouse jointly own every foreign account between you, one of you can file a single FBAR covering both after both spouses sign FinCEN Form 114a authorizing it. Keep Form 114a in your records; do not send it to FinCEN.5Financial Crimes Enforcement Network. Reporting Jointly Held Accounts For any jointly held account, each co-owner reports the full value, not a share of it.
Filing FinCEN Form 114
The FBAR is filed only through FinCEN’s BSA E-Filing System. It cannot be mailed, and it does not attach to your tax return.1Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) First-time users create an account on the BSA E-Filing website, then select the option to prepare a new FBAR and choose the calendar year being reported.
The form has two main parts. You enter your personal information (name, Social Security number, contact details), then enter the details for each reportable foreign account. You can add as many accounts as needed. After reviewing, you digitally sign the form, and the system runs a validation check before accepting the submission. Save the confirmation number and PDF copy that come back.
Keep records that support the filing for at least five years from April 15 of the year following the reporting period. Your records should include the account name, account number, institution name and address, account type, and maximum value for each account.6Financial Crimes Enforcement Network. Record Keeping Requirements
Deadline
The FBAR is due April 15 following the calendar year being reported, the same date as federal income tax returns. If you miss April 15, an automatic extension pushes the deadline to October 15. You do not request this extension or file any paperwork for it; it applies on its own.1Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR)
Penalties for Not Filing
FBAR penalties are disproportionate to what most people expect from an informational filing, and they scale sharply based on whether the government considers your failure willful or non-willful.
For non-willful violations, meaning you genuinely did not know about the requirement or made an honest mistake, the penalty runs up to $16,536 per report as of 2026. That amount is adjusted annually for inflation from a statutory base of $10,000.7Office of the Law Revision Counsel. 31 USC 5321 – Civil Penalties The IRS can waive the penalty entirely if you show reasonable cause.
Willful violations are far worse. The civil penalty is the greater of $100,000 or 50 percent of the account balance at the time of the violation.7Office of the Law Revision Counsel. 31 USC 5321 – Civil Penalties For someone with $300,000 in unreported foreign accounts, that is a $150,000 hit. Courts have held that “willful” does not require intentional wrongdoing; recklessness, meaning awareness of the obligation combined with conscious disregard, can be enough. Criminal violations can bring fines and up to five years in prison.8Internal Revenue Service. Details on Reporting Foreign Bank and Financial Accounts
If You’re Behind on Prior Years
If you’ve held reportable Wise balances in past years without filing, the IRS offers a path to get current without automatic penalties. The Delinquent FBAR Submission Procedures let you file late FBARs as long as three conditions are met: you are not under civil examination or criminal investigation by the IRS, the IRS has not already contacted you about the missing FBARs, and you do not need to use the IRS Criminal Investigation Voluntary Disclosure Practice or Streamlined Filing Compliance Procedures.9Internal Revenue Service. Delinquent FBAR Submission Procedures
File the late FBARs electronically through the BSA E-Filing System, select a reason for filing late on the cover page, and include a written statement explaining the delay. The IRS will not impose a penalty if you properly reported all income from the foreign accounts on your tax returns and paid the associated taxes.9Internal Revenue Service. Delinquent FBAR Submission Procedures
If you also have unreported foreign income or back taxes owed, the Streamlined Filing Compliance Procedures may be a better fit, though they carry a miscellaneous offshore penalty for domestic filers. At that level of complexity, professional help is usually worth the cost against the penalties you are trying to avoid.
One boundary worth knowing: the FBAR is not the only foreign-account disclosure that may apply. Form 8938, filed with your income tax return under FATCA, covers a similar set of assets at higher thresholds ($50,000 or $75,000 for unmarried U.S. filers; $100,000 or $150,000 for joint filers), and Wise balances can count there too.10Internal Revenue Service. Summary of FATCA Reporting for U.S. Taxpayers Meeting one requirement does not excuse you from the other.