International Money Transfer: Tax Rules, FBAR, and Penalties

The tax implications of an international money transfer depend on what the money represents, not on the fact that it crossed a border. Your own funds moving between accounts you own create no tax. Salary, business income, investment gains, or property-sale proceeds coming from abroad are taxable on your U.S. return. Gifts from foreign persons generally are not taxed to you as the recipient, but once they exceed set dollar thresholds you have to report them anyway. And separate from any tax owed, U.S. taxpayers with foreign accounts or large foreign gifts face information-return requirements whose penalties can dwarf the tax that would have been owed in the first place.

What Makes a Cross-Border Transfer Taxable

The Internal Revenue Code defines gross income as “all income from whatever source derived,” which reaches compensation, business profits, investment returns, and rental income earned in any country.¹ A wire from overseas that represents wages, freelance pay, or proceeds from selling foreign property is taxable, at federal rates that run from 10% to 37% depending on total taxable income for the year.²

Two common transfers are not income to you. Moving money between a U.S. account and a foreign account you also own is just relocating assets. And receiving a gift from someone abroad generally does not produce income tax for the recipient; under federal gift tax rules the giver bears any tax responsibility.³ The catch, covered further down, is that a non-taxable foreign gift can still carry a filing obligation.

Who These Rules Apply To

The reporting and worldwide-income rules apply to U.S. citizens, green card holders, and anyone who meets the substantial presence test. You meet that test if you were physically present in the United States for at least 31 days during the current year and at least 183 days over a three-year period, counting all days in the current year, one-third of the days in the prior year, and one-sixth of the days two years back.⁴ Foreign government officials, teachers and trainees on J or Q visas, and students on F, J, M, or Q visas are exempt from the day count. If you qualify as a tax resident under this test, the IRS expects you to report worldwide income and foreign accounts on the same footing as a citizen.

Avoiding Double Tax on Foreign-Earned Money

When another country has already taxed the same income, the foreign tax credit lets you claim a dollar-for-dollar credit against U.S. tax on that income.⁵ For most filers the credit produces a better result than an itemized deduction for the foreign taxes paid.

The credit is capped. It cannot reduce your U.S. tax below what you would owe on your domestic income alone, and it must be calculated separately for different income categories, including passive income, general business income, and foreign branch income. The formula caps the credit at the share of your total U.S. tax that corresponds to your foreign-source income.⁶ You claim the credit on Form 1116, and unused credit can be carried back one year or forward up to ten.

The United States also has income tax treaties with dozens of countries that reduce or eliminate double taxation on specific items such as pensions, royalties, or dividends. Benefits vary by country and income type, and the interaction between treaty relief and the credit calculation is one of the areas where paid help is often worth it.

Reporting Large Gifts and Inheritances From Abroad

A foreign gift or inheritance usually is not taxable to the recipient, but the IRS still wants notice above certain dollar levels. If your total gifts or bequests from a foreign individual or foreign estate exceed $100,000 in a year, you must report them on Form 3520. A separate, lower threshold applies to gifts from foreign corporations or foreign partnerships; it was $19,570 for the 2024 tax year and is adjusted annually for inflation, so verify the current figure with the IRS when you file.⁷

Form 3520 asks for the date and dollar value of each transfer, the donor’s identifying information, and, for non-cash property, fair market value at the time of the transfer. Hold on to wire confirmations, bank statements, and any correspondence about the gift in case the IRS questions the filing.

The penalty for filing Form 3520 late or incomplete is 5% of the gift’s value for each month it is overdue, up to 25% of the gift.⁸ On a $200,000 gift, that reaches $50,000 for a form that carries no tax of its own. This is the pattern that trips people up: the government is more focused on knowing the money exists than on collecting tax on it.

Foreign Bank Account Reporting

If the combined value of your foreign financial accounts crosses $10,000 at any point during the calendar year, you must file the Report of Foreign Bank and Financial Accounts, known as the FBAR (FinCEN Form 114). The requirement comes from the Bank Secrecy Act and covers checking, savings, brokerage, and mutual fund accounts held outside the United States, even when the balances sit across several countries or institutions.⁹

The threshold is aggregate, not per account. Three accounts that each peaked at $4,000 during the year together break $10,000, and the FBAR is required. You report each account’s maximum value during the year, the account number, and the institution’s name and address. You also report accounts you do not own but have signature authority over, a common issue for anyone managing a relative’s overseas account.⁹

Form 8938 for Higher-Value Foreign Assets

Under the Foreign Account Tax Compliance Act, Form 8938 is a separate requirement with higher thresholds. For unmarried taxpayers living in the United States, filing is triggered when specified foreign financial assets exceed $50,000 on the last day of the tax year or $75,000 at any point during the year.¹⁰ Married couples filing jointly and taxpayers living abroad have higher thresholds. Form 8938 reaches beyond bank accounts to include foreign stock, securities, and financial instruments issued by foreign entities.

The FBAR and Form 8938 are not interchangeable, and you may need to file both for the same accounts. The FBAR goes to FinCEN through the BSA E-Filing System; Form 8938 attaches to your annual income tax return filed with the IRS.

Converting Foreign Currency for the Return

Everything on a U.S. return has to be in U.S. dollars. The IRS does not designate an official rate but requires that whatever rate you use be reasonable, publicly available, and applied consistently.¹¹

The usual approach is to use the spot rate on the date you received income or paid an expense. For steady income like a foreign salary, the IRS’s yearly average rate is the practical choice. For one-time items such as a property sale or a lump-sum dividend, use the spot rate on the transaction date. You cannot switch methods for the same type of income to pick a better rate.

FBAR conversion works differently. Foreign account values on the FBAR use the Treasury’s year-end exchange rate as of December 31, not the rate on the day you checked your balance and not the yearly average. Mixing up the FBAR rate with the income tax rate is a common mistake.

Deadlines, and What Your Bank Is Already Reporting

The FBAR is filed electronically through the BSA E-Filing System, which is separate from the IRS e-file system used for your tax return.¹² The deadline is April 15, with an automatic extension to October 15 that you do not need to request.⁹ Form 3520 and Form 8938 attach to your annual return and share its April 15 deadline; a tax return extension also extends these information returns.

Your bank has its own reporting to do. U.S. financial institutions must collect and transmit identifying information about sender and recipient for any funds transfer of $3,000 or more under the Bank Secrecy Act’s Travel Rule.¹³ That is not a filing on you, but it means the government already has a record of your larger transfers before you file anything.

Penalties for Missing These Filings

Penalties for missing international information returns are severe compared with domestic filing mistakes, and they apply even when no tax is owed on the underlying transfer. “I didn’t know” is rarely a working defense.

Form 3520 carries the 5%-per-month penalty capped at 25% of the unreported gift.⁸ The IRS may also determine tax consequences of the transfer on its own if you fail to report, which can mean treating a non-taxable gift as taxable income.

FBAR penalties are harsher. Non-willful violations run up to $10,000 per unreported account, adjusted annually for inflation. Willful violations can reach the greater of $100,000 or 50% of the account balance at the time of the violation, and criminal prosecution is possible in extreme cases. Form 8938 carries a $10,000 penalty for failure to file, with an additional $10,000 for each 30-day period of continued non-compliance after IRS notice, up to $50,000.

Reasonable Cause

Penalty relief is available if you can show reasonable cause rather than willful neglect. The IRS looks at the facts case by case.¹⁴ Helpful factors include being a first-time filer of the form, a strong overall compliance history, a good-faith effort to understand the rules, and prompt correction after discovery. Simply not knowing about a requirement, or relying on a preparer who missed it, generally does not qualify on its own.

Fixing Prior-Year Reporting Failures

If you should have been filing FBARs or reporting foreign assets in earlier years and did not, the Streamlined Filing Compliance Procedures let you catch up without facing the full penalty structure. You have to certify that the failure was non-willful, meaning it came from negligence, inadvertence, mistake, or a good-faith misunderstanding of the law.¹⁵

Under the streamlined procedures, taxpayers in the United States file amended returns for the prior three tax years and delinquent FBARs for the prior six years, and pay a 5% miscellaneous offshore penalty on the highest aggregate balance of the unreported accounts during that period. Taxpayers living abroad who meet additional requirements may qualify for a zero-penalty version. You are not eligible if the IRS has already opened a civil examination of your returns or you are under criminal investigation.¹⁵

Cryptocurrency Sent or Received Internationally

Digital assets moving across borders follow the same general tax rules as any other property. The IRS treats digital assets as property, not currency, and selling, exchanging, or disposing of one is a taxable event whether the result is a gain or a loss.¹⁶ The main individual return forms now carry a yes-or-no question about digital asset activity.

Congress expanded the cash reporting rules in 2021 to include digital assets, which would require businesses receiving more than $10,000 in crypto to file Form 8300. Treasury and the IRS have not yet issued final regulations, so digital assets currently do not count toward the $10,000 cash reporting threshold. Businesses accepting crypto payments from abroad should watch for updated guidance.

1
Office of the Law Revision Counsel. 26 U.S. Code 61 – Gross Income Defined
2
Internal Revenue Service. Federal Income Tax Rates and Brackets
3
Internal Revenue Service. Frequently Asked Questions on Gift Taxes
4
Internal Revenue Service. Substantial Presence Test
5
Internal Revenue Service. Foreign Tax Credit
6
Internal Revenue Service. Instructions for Form 1116
7
Internal Revenue Service. Gifts From Foreign Person
8
Office of the Law Revision Counsel. 26 U.S. Code 6039F – Notice of Large Gifts Received From Foreign Persons
9
Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR)
10
Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets?
11
Internal Revenue Service. Yearly Average Currency Exchange Rates
12
Financial Crimes Enforcement Network. How Do I File the FBAR
13
FFIEC BSA/AML InfoBase. Funds Transfers Recordkeeping
14
Internal Revenue Service. Penalty Relief for Reasonable Cause
15
Internal Revenue Service. Streamlined Filing Compliance Procedures
16
Internal Revenue Service. Digital Assets