Valuing Foreign Assets for Form 8938

A €95,000 foreign account can cross a US reporting threshold—or miss it—depending on whether you grab the account's peak balance, its December 31 balance, or an annual average exchange rate. For Form 8938 and FBAR, the defensible workflow is to find the maximum value in the account's own currency first, then translate that maximum with the required year-end rate.

As of August 2026, the IRS and FinCEN both direct filers toward US Treasury year-end exchange rates, but the forms cover different assets and use different thresholds. This guide is for American expats preparing their own asset inventory, with notes for couples, retirees with foreign pensions, and operators holding several business or brokerage accounts. For the broader rules, pair it with the Form 8938 and FBAR comparison and the Expat Tax & Finance hub.

Which exchange rate should Form 8938 use?

Use the year-end rate, not the peak-day rate

Determine the asset's maximum value during the tax year in its foreign currency, then convert that amount to US dollars using the exchange rate on the last day of the tax year. The Form 8938 instructions say to use that year-end rate even if you closed the account or disposed of the asset before year-end.

In most cases, use the US Treasury Bureau of the Fiscal Service rate for purchasing US dollars. If Treasury does not publish the currency, use another publicly available rate for purchasing dollars and disclose both the rate and its source on Form 8938. A rate printed on an account statement issued at least annually is a permitted exception for that financial account.

Why the annual average can be wrong

The IRS publishes yearly average currency tables for general income conversion, but Form 8938 valuation has its own specific year-end rule. Using an average rate can shift a borderline asset above or below a reporting threshold and leave the rate field inconsistent with the form instructions.

The Treasury dataset states rates as units of foreign currency per US dollar. That means a foreign-currency balance is generally divided by the Treasury rate to produce dollars. Always inspect the unit convention before calculating; some commercial tools display the reciprocal.

Do Form 8938 and FBAR use the same valuation method?

Similar conversion, different reports

Both generally start with a reasonable approximation of the maximum value in foreign currency and convert it with a year-end Treasury rate. But Form 8938 is attached to the income tax return and can cover foreign accounts plus certain non-account assets. FBAR is filed separately with FinCEN and focuses on foreign financial accounts.

The official IRS comparison of Form 8938 and FBAR makes clear that one filing does not replace the other. A foreign brokerage account may appear on both, while directly held foreign stock can be a Form 8938 asset without being an FBAR account.

Valuation point	Form 8938	FBAR
Reporting period	Tax year	Calendar year
Value to find first	Maximum fair market value in foreign currency	Maximum account value in account currency
Conversion date	Last day of tax year	Last day of calendar year
Preferred rate	US Treasury Bureau of the Fiscal Service	US Treasury Bureau of the Fiscal Service
Fallback rate	Publicly available purchasing-dollar rate; disclose source	Another verifiable rate; provide source
Rounding	Report in US dollars using form value ranges or exact field	Round up to next whole dollar
Core threshold	Varies by filing status and living location	Aggregate foreign accounts over $10,000 at any time

How do you find the maximum account value?

A statement-based method

FinCEN permits periodic statements if they fairly reflect the maximum account value. The IRS likewise permits Form 8938 filers to rely on periodic statements unless they know or have reason to know that the statements fail to give a reasonable estimate. Monthly statements are therefore a practical starting point, not an excuse to ignore a known large intra-month transaction.

1. List every potentially reportable foreign account and non-account asset separately.
2. Record the currency in which each account or asset is denominated.
3. Review periodic statements and identify the highest reported balance in local currency.
4. Check for known deposits, sales, transfers, or distributions between statement dates that could be higher.
5. Record the maximum local-currency value and the evidence date or statement period.
6. Download the Treasury rate for the last day of the reporting year.
7. Divide or multiply according to the published rate convention and retain the calculation.
8. Aggregate the converted values using the rules of each form; do not reuse one form's threshold for the other.

Transfers and apparent double counting

Suppose you move €40,000 from Bank A to Bank B in June. Bank A may show a €40,000 maximum before the transfer and Bank B may show a €40,000 maximum afterward. FBAR's filing test uses the aggregate maximum values of accounts, so both maxima are part of the reporting analysis even though you did not own €80,000 simultaneously.

This conservative aggregation often surprises beginners. Do not net transfers away or combine multiple accounts into one entry. FinCEN says each account is valued separately, and if the aggregate maximum values exceed $10,000, all reportable accounts must be listed.

What Form 8938 threshold applies abroad?

Thresholds for qualifying taxpayers abroad

A specified individual living abroad generally files Form 8938 when covered assets exceed the applicable threshold. An unmarried filer or married person filing separately uses more than $200,000 on the last day of the tax year or more than $300,000 at any time. Married joint filers use more than $400,000 at year-end or more than $600,000 at any time.

To use those abroad thresholds, the taxpayer must have a foreign tax home and meet a presence-abroad test: bona fide residence for an uninterrupted period including an entire tax year, or presence in foreign countries for at least 330 full days during a 12-month period ending in the tax year. Merely having a foreign mailing address does not automatically unlock the higher limits.

Thresholds for filers treated as living in the US

An unmarried filer or married separate filer who does not satisfy the living-abroad rules uses more than $50,000 at year-end or more than $75,000 at any time. A married joint return uses more than $100,000 at year-end or more than $150,000 at any time.

These are “more than” tests. Exactly $50,000 is not more than $50,000, but currency conversion and other assets can push the aggregate higher. Include covered assets reported on certain other international forms when testing an individual's Form 8938 threshold, even if duplicative-reporting rules let you identify the other form in Part IV instead of listing the asset again.

How do you value pensions, stock, and joint assets?

Foreign pensions and deferred compensation

For a foreign pension, estate, or deferred compensation plan, start with the fair market value of the beneficial interest at year-end. If that value is not known and there is no reason to know it from readily available information, use the year-end value of cash and property distributed during the year.

If there were no distributions and the value is not known or reasonably knowable, the IRS Form 8938 FAQ permits zero. That is a narrow valuation rule, not a declaration that the pension is exempt from reporting or worth nothing economically.

Direct stock and joint assets

For a foreign asset held for investment outside a financial account, the year-end value can be used if it reasonably approximates the year's maximum. If readily available market data show a higher value, use the higher reasonable maximum. The IRS example uses stock worth $100,000 at year-end but $150,000 at its readily available 52-week high, and requires $150,000.

On a joint Form 8938, spouses report a jointly owned asset once at its full maximum. On separate Forms 8938, each spouse reports the entire maximum value of the jointly held asset. FinCEN also says each joint owner reports the entire FBAR account value unless the spousal single-filing procedure applies.

Build a reusable valuation workpaper

Columns to track

A defensible workpaper should preserve the account name, number suffix, institution and country, ownership type, currency, highest local balance, evidence date, year-end Treasury rate, rate convention, converted maximum, reportability conclusion, and the forms on which it appears. Keep a PDF or screenshot of the Treasury result with the statements.

• Inventory: include personal, joint, custodial, pension, brokerage, signature-authority, and business-related accounts for review.
• Evidence: save monthly or quarterly statements plus records of large intra-period transactions.
• Rate source: save the Treasury effective date and currency units; document any fallback provider.
• Formula: make the conversion visible rather than pasting a dollar result.
• Threshold test: calculate Form 8938 and FBAR separately.
• Review flag: mark foreign trusts, corporations, partnerships, mutual funds, gifts, and pensions for specialist analysis.

FinCEN requires FBAR records to be retained for five years from April 15 following the reported calendar year. The required records include the account name, account number or designation, institution name and address, account type, and maximum value. A filed FBAR copy can help satisfy that recordkeeping duty.

Which exchange-rate mistakes should you avoid?

Six common errors

Using the annual average rate. Form 8938 and FBAR maximum-value instructions point to the year-end rate. Average rates may be useful for recurring income, but they are not the default here.

Using the rate from the peak date. Find the peak in local currency, then translate it at year-end. Mixing the peak-day rate into the calculation changes the prescribed method.

Multiplying when the quote requires division. Treasury commonly states foreign currency units per $1. Test the formula with a familiar approximate market value before applying it to every account.

Ignoring a closed account. Closing an account before December 31 does not eliminate its maximum value. The year-end rate still applies to that earlier maximum.

Netting transfers between accounts. Each account has its own maximum. Moving the same cash can create reportable maxima in both the sending and receiving accounts.

Assuming Form 8938 replaces FBAR. The forms have separate coverage, thresholds, filing destinations, deadlines, and penalty regimes. Complete two separate determinations.

Conclusion

Maximum first, year-end rate second

The reliable method is mechanical: identify every potentially covered asset, determine each maximum in its own currency, translate with the correct year-end rate, preserve the source, and test Form 8938 and FBAR separately. This protects against both underreporting and unnecessary panic around normal currency swings.

For beginners, a clear spreadsheet and saved statements are enough to start. Families should pay special attention to full-value joint reporting, retirees to foreign pension valuation, and operators to transfers that create multiple account maxima.

Data notes / Sources checked

Official sources reviewed

• IRS Instructions for Form 8938
• IRS About Form 8938
• IRS Form 8938 and FBAR comparison
• IRS Form 8938 questions and answers
• IRS FATCA reporting summary
• US Treasury currency exchange rate converter
• FinCEN maximum account value guidance
• FinCEN jointly held account guidance
• FinCEN FBAR recordkeeping rules

Data note: thresholds, valuation instructions, and reporting procedures were checked in August 2026. Treasury rates vary by reporting date, and forms can change.