Moving abroad or spending extended time outside the United States can be an exciting opportunity. Whether you are relocating for work, retiring overseas, studying abroad, or simply traveling for an extended period, it is easy to assume that leaving the US means leaving behind your US tax obligations.
However, US citizens and Green Card holders generally remain subject to US tax filing requirements even when they live outside the country. The IRS taxes worldwide income, meaning income earned overseas may still need to be reported on a US tax return.
Failing to understand these obligations can lead to missed filings, penalties, and unexpected notices from the IRS.
Do US Citizens Have to File Taxes While Living Abroad?
Unlike many countries that determine tax obligations primarily based on residency, the US generally uses citizenship-based taxation.
This means US citizens and Green Card holders may need to file a federal tax return even if they:
- Live permanently outside the US
- Earn income from a foreign employer
- Own a business overseas
- Receive foreign investments
- Retire in another country
The requirement to file depends on factors such as income level, filing status, and age. Simply moving overseas does not automatically end your responsibility to file a US tax return.
What Income Must US Expats Report?
US tax rules require Americans abroad to report worldwide income. This includes income earned both inside and outside the United States.
Common types of foreign income that may need to be reported include:
- Foreign employment income
- Self-employment income
- Rental income
- Foreign pensions
- Dividends and investment income
- Business profits
- Capital gains
Even if the income was already taxed in another country, it may still need to be reported on a US tax return.
The good news is that many expats can use provisions such as the Foreign Earned Income Exclusion (FEIE) or Foreign Tax Credit (FTC) to reduce or eliminate double taxation.
What Happens If You Miss US Tax Filings?
Many Americans living abroad are unaware that they still have US filing requirements. This is especially common among people who:
- Moved overseas and assumed they no longer needed to file
- Were born abroad but inherited US citizenship
- Have never filed a US tax return
- Forgot to report foreign accounts or investments
Missing tax filings does not always mean facing immediate penalties, but ignoring the issue can create complications later.
For example, you may have difficulty applying for certain financial services, renewing compliance documents, or responding to IRS correspondence.
The IRS has programs that may help eligible taxpayers become compliant, including procedures designed specifically for certain US taxpayers living overseas.
What Is IRS Notice CP518?
One common IRS communication that overseas taxpayers may receive is an IRS Notice CP518.
An IRS Notice CP518 is a final notice sent by the IRS when it believes a taxpayer has failed to file a required tax return.
The notice typically informs the taxpayer that the IRS has not received a required return and requests that they take action.
For Americans living abroad, receiving a CP518 notice can be confusing because many people may not have realized they had a filing obligation in the first place.
Ignoring the notice can lead to further IRS collection actions, so it is important to understand why the notice was issued and what steps should be taken.
Does the Foreign Earned Income Exclusion Mean You Do Not Need to File?
A common misunderstanding among expats is that qualifying for the Foreign Earned Income Exclusion means they no longer need to file a US tax return.
This is not correct.
The FEIE may allow eligible taxpayers to exclude a certain amount of foreign earned income from US taxation, but the taxpayer generally still needs to file a return to claim the exclusion.
The same applies to the Foreign Tax Credit. While the credit can reduce US tax owed by providing a credit for qualifying foreign taxes paid, it does not automatically remove the filing requirement.
What About Foreign Bank Accounts?
Living overseas often means opening local bank accounts, investment accounts, or retirement accounts.
However, some foreign financial accounts may create additional reporting obligations.
For example, US taxpayers may need to file a Foreign Bank Account Report (FBAR) if the combined value of qualifying foreign accounts exceeds the reporting threshold.
Other forms may also apply depending on the type and value of foreign assets, including:
- Form 8938 for specified foreign financial assets
- Form 3520 for certain foreign trusts or gifts
- Form 8621 for certain foreign investments
These reporting requirements are separate from filing a regular US tax return.
How Can Expats Stay Compliant?
The easiest way to avoid problems is to understand your obligations before issues arise.
US citizens and Green Card holders abroad should:
Keep Track of Filing Deadlines
Expats generally receive an automatic extension to file their US tax return, but any taxes owed may still need to be paid by the regular deadline to avoid interest and penalties.
Maintain Foreign Income Records
Keep documentation for wages, foreign taxes paid, investment income, and overseas accounts.
Review Foreign Reporting Requirements
A tax return may not be the only requirement. Additional forms may apply depending on your financial situation.
Address Missed Filings Early
If you have fallen behind, waiting for an IRS notice may make the process more complicated. Certain IRS programs may allow eligible taxpayers to catch up and become compliant.
Don’t Assume Moving Abroad Ends Your US Tax Obligations
Living or traveling overseas does not automatically remove your responsibility to comply with US tax rules.
For many Americans abroad, the biggest challenge is not owing tax. It is understanding what needs to be reported and which forms apply.
By staying informed about filing requirements, foreign income reporting, and IRS notices, expats can avoid unnecessary complications and maintain compliance while enjoying life overseas.
