FBAR Direct prepares and files your FBAR (FinCEN Form 114) on your behalf. You are responsible for reviewing all information for accuracy before submission to FinCEN. This article is for informational purposes only and does not constitute tax, legal, or financial advice.

FBAR Exchange Rate Treasury: How to Convert Foreign Currency to USD

The FBAR exchange rate treasury rule requires every U.S. person to convert foreign financial account balances to U.S. dollars using the December 31 Treasury Reporting Rates of Exchange. The official exchange rates appear at fiscal.treasury.gov. Under 31 CFR 1010.306, you report the maximum account value on FinCEN Form 114 — not the December 31 balance, but the highest balance at any point during the calendar year, expressed as a U.S. dollar amount.

Getting the foreign currency conversion wrong affects whether you cross the $10,000 aggregate threshold and what dollar figure appears on your FBAR. A rate error may prompt an IRS notice. This article covers how to find and apply the correct exchange rates, what to do when your currency is not listed, and how to determine the maximum value across multiple accounts.

Which Exchange Rates Must You Use for FBAR Reporting?

FinCEN requires the U.S. dollar exchange rates from the Treasury Reporting Rates of Exchange for the reporting year. These FBAR exchange rates are published quarterly by the Bureau of the Fiscal Service at fiscal.treasury.gov. The official Treasury rate is the only rate the Financial Crimes Enforcement Network accepts — bank rates and ATM rates include retail spreads that differ from the Department of the Treasury's published U.S. dollar figures.

The rates are expressed as foreign currency units per one U.S. dollar. To convert foreign currency to a U.S. dollar amount, divide the maximum account value in foreign currency by the listed rate. For example, if the GBP rate is 0.7937, then £50,000 ÷ 0.7937 = $63,000 USD. The U.S. dollar result is what you enter on FinCEN Form 114.

How to Find and Apply the December 31 Treasury Rate

Follow these steps each filing year to convert foreign currency balances:

1. Visit fiscal.treasury.gov/reports-statements/treasury-reporting-rates-exchange/ and select the December 31 report for your reporting year.
2. Find your country currency in the table. The Bureau of the Fiscal Service lists foreign currency units per one U.S. dollar.
3. Determine the maximum account value — the highest foreign currency balance at any point during the calendar year, not just the year-end balance.
4. Divide the maximum foreign currency balance by the Treasury rate to convert to USD. Dollar amounts rounded to the next whole dollar are acceptable on Form 114.
5. Save the URL, the exact exchange rate, and the access date. Retain this for at least six years for any IRS examination.

Understanding the Rate Format

The Treasury Reporting Rates of Exchange show foreign currency units per U.S. dollar. A GBP rate of 0.7937 means £0.7937 equals $1.00. Many filers multiply instead of divide — a significant error. Verify your work: when the rate is below 1.0 (GBP, EUR, CHF), the U.S. dollar amount is larger than the foreign currency figure. When the rate is above 1.0 (JPY, INR, CAD), the U.S. dollar amount is smaller. If your foreign currency balance is £30,000 and you want the U.S. dollar equivalent, divide — not multiply.

Year-end rate versus peak date: you always apply the December 31 exchange rates regardless of when the maximum account value occurred. Under 31 CFR 1010.306, the year-end rate applies to the maximum value even if that peak occurred months earlier. The rate on the date of the highest balance is irrelevant for FBAR purposes.

The effective date for the Treasury exchange rates you use on FinCEN Form 114 is December 31 of the reporting year. All monetary amounts on FinCEN Form 114 must be expressed in United States dollars — you cannot report a foreign currency amount directly on the form.

FBAR Exchange Rates Reference Table

The table below shows approximate Treasury Reporting Rates for December 31, 2024. Always verify current exchange rates at fiscal.treasury.gov before filing — these rates change each calendar year.

Currency	Code	Dec 31, 2024 Rate (foreign currency units per USD)
British Pound (United Kingdom)	GBP	0.7937
Euro (Euro Zone)	EUR	0.9705
Canadian Dollar	CAD	1.4419
Australian Dollar	AUD	1.6027
Japanese Yen	JPY	157.12
Swiss Franc	CHF	0.8987
Israeli Shekel	ILS	3.6411
Indian Rupee	INR	85.60
Hong Kong Dollar	HKD	7.7831
Saudi Arabia Riyal	SAR	3.7505
South Africa Rand	ZAR	18.21
Cayman Islands Dollar	KYD	0.8333
East Caribbean Dollar	XCD	2.7009
United Arab Emirates Dirham	AED	3.6725

Note: Currencies such as Congo Congolese Franc, Gabon CFA, and Principe New Dobras may not appear on the official list. See the alternative sources section below for those situations.

Let FBAR Direct handle the conversion — we apply the correct FBAR exchange rate treasury December 31 rates automatically. You review and approve before we submit to FinCEN.

What If the Treasury Doesn't Publish a Rate for Your Currency?

When the Department of the Treasury does not publish a year-end rate for your foreign currency, use a verifiable exchange rate from another recognized official source and document the method. The standard is that the rate should fairly reflect the maximum account value — you cannot select a figure that understates the USD maximum balance.

Accepted alternative sources for non United States currency conversion:

• OANDA Historical Rates — widely accepted by tax professionals; provides December 31 rates for any country currency
• XE.com Historical Rates — free lookup for historical foreign currency rates by specific date
• Federal Reserve H.10 Statistical Release — covers more currencies than the Treasury Reporting Rates of Exchange, published weekly
• Wall Street Journal published rates — acceptable as an official source when Treasury Reporting Rates are not available

Save a PDF showing the rate, the access date, and the URL. This demonstrates good-faith effort and supports a reasonable cause defense. Periodic account statements that fairly reflect the maximum balance may also serve as a verifiable exchange rate from an official source in some circumstances. For currencies with multiple exchange rates published by different bodies, use the rate that most closely represents the value on a reasonable approximation basis — document your choice and reasoning.

Note that for accounts holding nonmonetary assets such as foreign securities or precious metals, the FinCEN 114 instructions direct you to report the greatest value of those assets in United States dollars during the calendar year, applying the same year end rate conversion approach as for cash accounts.

How Do You Determine Maximum Account Value Across Multiple Accounts?

When you hold multiple foreign financial accounts in different countries, convert each account's maximum account value to USD separately, then sum all values. This aggregate maximum determines whether you exceed the $10,000 filing threshold under 31 CFR 1010.306.

The threshold is not per account. For example, if GBP accounts have a maximum value of $6,000 and EUR accounts have a maximum value of $5,500, your aggregate maximum is $11,500 — both accounts must appear on your FBAR even though no single account exceeds $10,000 on its own. Each account is valued separately using its own country currency and the corresponding Treasury rate. A U.S. person with accounts in pounds, euros, and yen performs three currency conversions using three different FBAR exchange rates, each producing its own U.S. dollar maximum value.

You cannot apply a blended currency exchange rate across accounts — each foreign currency amount must be converted individually using its own Treasury exchange rates entry at the December 31 rate.

Aggregating Multiple Currencies: Step-by-Step

1. For each foreign bank account, determine the maximum account value in local foreign currency during the calendar year.
2. Convert each maximum to USD using the December 31 Treasury rate for that currency.
3. Sum all USD maximum values. If the aggregate maximum exceeds $10,000 at any point during the reporting year, file FinCEN Form 114.

When accounts span multiple currencies — for example, accounts in the euro zone, South Africa, and Canada — and your country reports multiple exchange rates for the same period, use the December 31 Treasury rate as the primary source before turning to alternatives.

For more than one account in the same currency, each account is still valued separately. Multiple accounts in the same foreign currency each carry their own maximum balance, converted at the same year-end exchange rate.

See How to Calculate Maximum Account Value for FBAR for the full calculation methodology.

Multi-Currency Accounts and Financial Interest

A single account denominated in multiple currencies — such as a Wise or Revolut account — requires you to convert each foreign currency portion separately using its own December 31 Treasury rate, then sum the USD equivalents to determine the account's maximum value. Valuing currency correctly in these multi-currency accounts is critical because an error in one portion can affect the aggregate total. The same rule applies to foreign financial accounts where you hold a financial interest without ownership. See FBAR Business Accounts and Signatory Authority for rules on accounts where you have financial interest but are not the primary owner.

Can Using the Wrong Exchange Rate Lead to Penalties?

Yes. A rate error that produces an inaccurate maximum account value is a filing deficiency under federal law. Non-willful violations carry penalties up to $16,117 per violation under 31 USC 5321(a)(5)(B). Willful violations carry the greater of $100,000 or 50% of the account balance under 31 USC 5321(a)(5)(C).

Using a bank rate or a wrong-year Treasury rate does not eliminate liability simply because the error was unintentional. A good-faith effort supported by documentation of an official source significantly reduces penalty risk. The IRS may cross-reference the dollar amounts on your FBAR against your tax return; a discrepancy caused by wrong exchange rates can prompt scrutiny even when foreign income was correctly reported. Using wrong exchange rates is distinct from willful underreporting — the circumstances and intent matter. See FBAR Penalties: What Happens If You Don't File and FBAR Willful vs Non-Willful Penalties for penalty analysis.

Frequently Asked Questions

Do I use the rate on the date my balance peaked or the December 31 FBAR exchange rate treasury rate?

You always use the December 31 exchange rates for the reporting calendar year. Under 31 CFR 1010.306, the year-end rate applies to the maximum account value regardless of when that peak occurred. The foreign currency rate on the date of the highest balance is irrelevant for FBAR purposes. If your Swiss franc account peaked in July, convert that maximum value using the December 31 CHF Treasury rate.

What if my currency is not in the Treasury Reporting Rates of Exchange?

Use a verifiable exchange rate from a recognized source — OANDA, XE.com, or the Federal Reserve H.10 release. Document the source, the rate, and the access date. Retain this for at least six years as your official source for that non United States currency. This demonstrates good-faith compliance under 31 USC 5314.

Can I use my bank's rate instead of the Treasury rate?

No. FinCEN requires the Department of the Treasury's year-end exchange rates for FBAR purposes. Bank rates include retail spreads that produce different USD figures than the official source. Using a bank rate may create a discrepancy if the IRS cross-checks your dollar amounts against Treasury rate calculations during an examination.

Does the FBAR exchange rate differ from Form 8938 rules?

Both the FBAR and Form 8938 under 26 USC 6038D use the December 31 exchange rates from the Treasury Reporting Rates of Exchange. However, Form 8938 (FATCA) thresholds start at $50,000 for domestic filers versus $10,000 aggregate for the FBAR. See FBAR vs FATCA Form 8938 for a full comparison.

Do foreign retirement accounts follow the same currency rules?

Yes. Foreign pension and retirement accounts that qualify as foreign financial accounts use the same December 31 Treasury rate rule. The maximum account value is the highest balance during the reporting year, converted to USD using the Treasury Reporting Rates of Exchange. Valuing currency in retirement accounts follows the same year end rate approach. Periodic account statements fairly reflect the maximum balance and serve as supporting documentation for the value you report. See FBAR Foreign Pension and Retirement Accounts for account-specific guidance.

What if I have more than one account in the same foreign currency?

Each account is valued separately. Determine the maximum account value for each account, convert each to USD using the same December 31 FBAR exchange rates for that currency, then sum for the aggregate maximum. The $10,000 threshold applies to the combined total, not to any single account.

Let FBAR Direct Handle Your Currency Conversion

Converting foreign currency balances to USD across multiple accounts takes time. Finding the correct FBAR exchange rates, applying them to the maximum account value for each account, and retaining documentation adds up — especially with foreign financial accounts in multiple countries.

Let FBAR Direct prepare your filing — you review and approve before we submit to FinCEN. We apply the correct FBAR exchange rate treasury December 31 rates rather than a bank's retail currency exchange markup, identify currencies that may require alternative sources, and retain documentation for your records. Note that our process covers accounts in United States dollars as well as any non-U.S. currency. See how it works.

Tax regulations change frequently. Always verify current requirements at IRS.gov or FinCEN.gov. For advice specific to your situation, consult a qualified tax professional. This article is current as of March 02, 2026.