
This is a question that many U.S. citizens living abroad grapple with, as the United States is one of the few countries that taxes its citizens on their worldwide income, regardless of where they live or earn it. This article will explore the concept of double taxation for expats, examining the mechanisms in place to avoid or minimize it, such as the Foreign Earned Income Exclusion (FEIE), the Foreign Tax Credit (FTC), and tax treaties, while also touching on the crucial steps for ensuring compliance with both U.S. and foreign tax laws.
U.S. Tax Obligations for Expats
While it may seem that expats are destined to pay taxes twice, once in the U.S. and again in their country of residence, this is not necessarily the case. Although U.S. citizens living abroad must report their global income to the IRS, there are various mechanisms to prevent or minimize double taxation. The U.S. is one of the few countries that taxes its citizens on their worldwide income, regardless of where they live or earn their income. Expats must file an annual federal tax return (Form 1040) and report all income earned worldwide.
Mechanisms to Avoid Double Taxation
- Foreign Earned Income Exclusion (FEIE): The U.S. offers tools like the FEIE, which allows expats to exclude a certain amount of their foreign-earned income from U.S. taxation. For 2023, the limit was $120,000, and it will be $126,500 for 2024. To qualify for the FEIE, expats must meet either the physical presence test (spending at least 330 days outside the U.S. in a 12-month period) or the bona fide residence test (establishing residency in a foreign country for an entire tax year). The FEIE only applies to “earned income,” such as salaries, wages, commissions, bonuses, tips, and self-employment income. Unearned income, such as interest, dividends, capital gains, and pensions, cannot be excluded. The Foreign Housing Exclusion may also be available if you qualify for the FEIE.
- Foreign Tax Credit (FTC): The Foreign Tax Credit (FTC) provides a dollar-for-dollar credit for foreign taxes paid on the same income, which can be used to offset U.S. tax liabilities. To claim the FTC, expats must file Form 1116 with their U.S. tax return and provide documentation of foreign taxes paid. Unlike the FEIE, the FTC can be used to reduce taxes on both earned and unearned income. If the FTC exceeds the amount you paid in foreign taxes, you can carry the excess forward or back to reduce your tax liability in other years. It’s generally more advantageous to take foreign income taxes as a tax credit, as it directly reduces your U.S. tax liability.
- Tax Treaties: Tax treaties between the U.S. and other countries can also help avoid double taxation by clarifying which country has taxing rights over specific types of income. These treaties may reduce or eliminate withholding taxes on certain payments. However, most U.S. tax treaties include a “saving clause,” which allows each country to tax its own citizens as if the treaty did not exist. This means that even with a tax treaty, expats may not be entirely shielded from double taxation, but they may still provide useful benefits.

How Double Taxation Occurs?
Double taxation can occur in two main scenarios:
- Corporate and Personal Level Taxation: When income is taxed at both the corporate and personal level, especially with C corporations. C corporations are taxed on their profits, and then shareholders are taxed again on dividends they receive from those profits.
- International Taxation: When the same income is taxed in two different countries, typically when a taxpayer resides in one country and earns income in another. The U.S. is one of the few countries that taxes its citizens on worldwide income, regardless of where they live or earn it.
For business entities, S corporations, partnerships, and sole proprietorships are considered “pass-through” entities, where the income is not taxed at the corporate level but passes through to the owners, who then report it on their personal income tax returns, thus avoiding double taxation.
Deductible Expenses for Expats
Expats running businesses abroad can reduce their taxable income by claiming legitimate business expenses. Common deductible expenses include travel costs, home office deductions, and marketing expenses. In certain circumstances, groceries may also qualify as a deductible expense if they are directly related to the business, for example for food bloggers or daycare providers.
Additional Reporting Requirements
In addition to filing Form 1040, American expats must also comply with additional reporting requirements:
- FBAR (Foreign Bank Account Report): If your foreign bank accounts exceed $10,000 in aggregate value at any point during the year, you must file FinCEN Form 114 electronically.
- FATCA (Foreign Account Tax Compliance Act): Expats must report specified foreign financial assets exceeding $50,000 ($100,000 for joint filers) using Form 8938.
Failure to comply with these reporting requirements can result in severe penalties.
Ensuring Accurate Reporting and Compliance
It is important to keep accurate records of all foreign taxes paid, including the tax type and related income. This documentation is essential for IRS audits and for substantiating FTC claims. Additionally, taxpayers should be aware of the IRS’s stringent reporting requirements, including the need to notify the IRS of any foreign tax redetermination within 30 days using IRS Form 1116 or IRS Form 1118.
Given the complexities of expat tax laws, consulting a tax professional is highly recommended. They can guide you through regulations, ensure you claim all the credits you’re entitled to, help you understand qualifying foreign taxes, and assist you with filing the necessary forms, such as Form 1116 for individuals or Form 1118 for corporations. Tax professionals can also advise you on compliance issues, such as the need to apportion interest expense between U.S. and foreign source income or the special rules for taxes paid to countries without a U.S. tax treaty.
Common Tax Forms for U.S. Expats
Here are some of the commonly used tax forms for U.S. expats:
- Form 1040: This is the main U.S. tax form used to report income to the IRS.
- Form 1116: IRS Form 1116 is used to claim the Foreign Tax Credit.
- FinCEN Form 114 (FBAR): FinCEN Form 114 (FBAR) is used to report foreign bank accounts with an aggregate value of more than $10,000.
- Form 2555: IRS Form 2555 is used to claim the Foreign Earned Income Exclusion.
- Form 8938: IRS Form 8938 is used to report assets in foreign financial institutions to the IRS if their value exceeds certain thresholds.

FAQs
Is double taxation legal?
Yes, it is legal and can occur when income is taxed at both corporate and personal levels, as well as in international taxation scenarios.
How does an LLC avoid double taxation?
An LLC is a “pass-through” entity, meaning its income is taxed at the owner’s personal level.
Can I be taxed on the same income in two states?
Yes, but most states offer tax credits to mitigate this.
Do US dual citizens pay double taxes?
They may face it, but the US offers tax treaties, credits, and exclusions to help.
What is the 183-day rule?
It’s a guideline used by some countries to determine tax residency based on the amount of time spent in the country.