Kuwait is a zero-tax country for personal income, which simplifies local taxes but creates unique US tax obligations. With no comprehensive US-Kuwait income tax treaty, Americans rely on the Foreign Earned Income Exclusion (FEIE) to avoid double taxation on their salary. Critically, there is also no Social Security totalization agreement, meaning self-employed US persons owe full US self-employment tax on their earnings.
US filing basics every American abroad must know
US citizens and green-card holders are taxed on worldwide income wherever they live, and usually must file Form 1040 once gross income exceeds the IRS threshold ($15,750 for single filers, $31,500 for married filing jointly, and $23,625 for head of household for 2025), even when no tax is ultimately due. The tools that prevent double taxation are the Foreign Earned Income Exclusion (FEIE, up to $130,000 for 2025 under IRC §911) and the Foreign Tax Credit.
Two reporting rules catch most filers in Kuwait: the FBAR (FinCEN Form 114), required when foreign financial accounts exceed $10,000 in aggregate at any point in the year, and Form 8938 (FATCA) for specified foreign assets above the applicable threshold. Both can carry penalties even when no tax is owed. If you are behind, the Streamlined Filing Compliance Procedures are the usual penalty-free path back for non-willful taxpayers.
US tax treaty with Kuwait
There is no comprehensive US-Kuwait income tax treaty. This means there are no treaty-based reductions in withholding tax, no special rules for pensions or capital gains, and no residency tie-breaker rules. Relief from double taxation for US citizens and green card holders relies entirely on domestic US tax law, primarily the Foreign Earned Income Exclusion (FEIE) and the Foreign Tax Credit (FTC). Since Kuwait does not levy a personal income tax, the FTC is generally not a useful tool for offsetting tax on earned income.
Kuwaiti Retirement Plans and US Tax
Kuwait's primary retirement system is the Public Institution for Social Security (PIFSS), but expatriates are generally not required to participate. For any American who does participate in a non-US pension or savings plan in Kuwait, it is crucial to understand the US tax implications.
These plans are typically not considered "qualified" retirement plans under US law. The IRS may treat them as foreign grantor trusts or employee trusts. This can lead to complex reporting requirements, including filing Form 3520 (Annual Return To Report Transactions With Foreign Trusts and Receipt of Certain Foreign Gifts) and Form 3520-A (Annual Information Return of Foreign Trust With a U.S. Owner).
Furthermore, the value of any foreign retirement or pension account must be included when determining if you meet the filing thresholds for the FBAR (FinCEN Form 114) and Form 8938 (Statement of Specified Foreign Financial Assets).
Investments, property, and capital gains in Kuwait
Investing in Kuwait requires careful attention to US anti-deferral rules. Any investment in a non-US-based fund, such as a local mutual fund or ETF, is likely a Passive Foreign Investment Company (PFIC). Owning PFIC shares requires filing Form 8621 for each fund and can result in a highly punitive tax outcome unless specific, timely elections are made.
While Kuwait does not have a personal income tax or capital gains tax, the US taxes its citizens on their worldwide income. This means any capital gains from selling stocks, real estate, or other property in Kuwait must be calculated and reported on your US tax return, subject to US capital gains tax rates.
Self-employment and companies in Kuwait
Operating a business in Kuwait has significant US tax and reporting implications. If you own 10% or more of a Kuwaiti corporation, you may be required to file Form 5471 (Information Return of U.S. Persons With Respect to Certain Foreign Corporations). If the company is majority-owned by US shareholders (US persons owning 10% or more), it is classified as a Controlled Foreign Corporation (CFC) (IRC Section 957). This can cause some of the company's profits to be taxed directly to you in the US, even if not distributed, under rules like Subpart F income and Global Intangible Low-Taxed Income (GILTI).
For sole proprietors and contractors, the rules are stark. As there is no US-Kuwait totalization agreement, you are fully liable for US self-employment tax (Social Security and Medicare) on your net earnings if they exceed $400. For 2025, this is a 15.3% tax on earnings up to the Social Security wage base, plus 2.9% on earnings above that. The Foreign Earned Income Exclusion (FEIE) cannot be used to reduce your income for self-employment tax purposes. You cannot obtain a Certificate of Coverage to claim an exemption.
Worked examples
Petroleum engineer on local payroll (2025)
Sarah is a US citizen working as a petroleum engineer in Kuwait City for a local company. Her 2025 salary is the equivalent of $180,000. Kuwait does not impose an income tax on her salary.
On her US tax return, Sarah can use the Foreign Earned Income Exclusion (FEIE) to exclude up to $130,000 of her foreign earnings for 2025. This reduces her US Adjusted Gross Income (AGI) to $50,000 ($180,000 - $130,000). The standard deduction will further reduce the amount subject to tax, so she will not owe US income tax on the full remaining $50,000. However, under the stacking rule, the remaining income is taxed at the higher marginal rates that would apply if the excluded income were included. She must also file an FBAR (FinCEN Form 114) because her Kuwaiti bank account balance exceeds $10,000, and she may also need to file Form 8938 if her foreign asset values are high enough.
Self-employed IT consultant (2025)
David is a US citizen living in Kuwait and working as a self-employed IT consultant. In 2025, his net earnings from self-employment are $120,000. He has no Kuwaiti tax liability.
For US tax purposes, David faces two separate obligations. First, for income tax, he can use the Foreign Earned Income Exclusion (FEIE) to exclude his entire $120,000 of earnings, resulting in zero US income tax. Second, for self-employment tax, the FEIE provides no benefit. He must pay US self-employment tax on his earnings. The calculation is on 92.35% of his net earnings, so $120,000 * 0.9235 = $110,820. The tax is 15.3% of this amount, which is $16,955.46. This is because there is no US-Kuwait totalization agreement to prevent dual social security liability.
Entrepreneur with a Kuwaiti company (2025)
Maria, a US citizen, owns 40% of a Kuwaiti W.L.L. (a type of limited liability company) with two other US citizen partners who each own 30%. The company is profitable. Maria also has a personal investment portfolio that includes a Kuwaiti-domiciled mutual fund.
Because the company is majority-owned by US shareholders (US persons owning 10% or more), it is a Controlled Foreign Corporation (CFC). Maria must file Form 5471 annually. A portion of the company's profits may be deemed distributed to her as GILTI income, which she must report on her personal US tax return, even if she receives no actual cash distribution. Her Kuwaiti mutual fund is a PFIC, so she must file Form 8621. If she sells her shares in the fund, the gains will be subject to punitive US tax rules unless she made a timely election. All of these are US tax obligations, despite the lack of taxation in Kuwait.
Common mistakes for Americans in Kuwait
- Assuming that because Kuwait has no income tax, no US tax return is due.
- Forgetting to file an FBAR for Kuwaiti bank accounts with an aggregate balance over $10,000.
- For self-employed individuals, incorrectly using the FEIE to try to eliminate US self-employment tax.
- Believing a US-Kuwait Social Security (totalization) agreement exists and trying to get a Certificate of Coverage to avoid SE tax.
- Investing in local Kuwaiti mutual funds without realizing they are PFICs that require complex reporting on Form 8621.
- Failing to report the sale of Kuwaiti real estate or other assets, mistakenly thinking the lack of Kuwaiti capital gains tax applies for US purposes.
- Owning a significant share of a Kuwaiti company and not filing Form 5471 or considering CFC and GILTI income.
- Failing to report income from a Kuwaiti pension or savings plan, which is not automatically tax-deferred like a US 401(k).
Kuwait tax FAQ
Do I have to file a US tax return if I live in Kuwait?
Yes, most likely. US citizens and green card holders are taxed on their worldwide income. If your gross income from all sources is above the filing threshold, you must file a US tax return, regardless of where you live or whether you owe any tax to Kuwait.
Is there a US-Kuwait tax treaty to help me?
No. There is no comprehensive income tax treaty between the United States and Kuwait. Your options for avoiding double taxation are limited to US domestic law, such as the Foreign Earned Income Exclusion (FEIE) and the Foreign Tax Credit (FTC).
How can I reduce my US tax bill while living in Kuwait?
The most common tool is the Foreign Earned Income Exclusion (FEIE), which allows you to exclude a significant amount of your salary or wages from US income tax. The Foreign Tax Credit (FTC) is another option, but since Kuwait has no personal income tax, you won't have any foreign taxes paid on earned income to credit against your US tax liability.
I'm self-employed in Kuwait. Do I owe US Social Security and Medicare taxes?
Yes. There is no Social Security totalization agreement between the US and Kuwait. This means if you have net self-employment earnings of $400 or more, you owe the full US self-employment tax (15.3% on most of your income). The FEIE does not reduce your income for calculating this tax.
Do I need to tell the US government about my Kuwaiti bank account?
Yes, if the value is high enough. If the combined total of all your foreign financial accounts (including bank, brokerage, and some pension accounts) exceeds $10,000 at any point during the year, you must file a FinCEN Form 114 (FBAR). At higher asset levels, you may also need to file Form 8938 with your tax return.
What are the risks of investing in a Kuwaiti mutual fund?
A Kuwaiti mutual fund is considered a Passive Foreign Investment Company (PFIC) by the IRS. Owning shares in a PFIC triggers complex and burdensome reporting requirements on Form 8621. The default tax treatment on distributions and gains is extremely unfavorable, so professional tax advice is highly recommended before investing in non-US funds.
I own a business in Kuwait. What should I be aware of?
If you have a significant ownership stake (generally 10% or more) in a Kuwaiti company, you may need to file Form 5471. If the company is majority-owned by US shareholders (US persons owning 10% or more), it's a Controlled Foreign Corporation (CFC), and you could be taxed in the US on its undistributed profits under the GILTI or Subpart F rules.
Is my salary earned in Kuwait automatically tax-free in the US?
No, it is not. Your Kuwaiti salary is fully taxable by the US by default. You must proactively claim the Foreign Earned Income Exclusion (FEIE) on a timely filed tax return to exclude it from US income tax. It remains subject to US self-employment tax if you are self-employed.
Sources and last reviewed
- IRS, Form 5471 Instructions (verified 2026-06-07)
- IRS, General Information for U.S. Taxpayers Abroad (verified 2026-06-07)
- Kuwait's Public Institution for Social Security (PIFSS) (verified 2026-06-07)
- Social Security Administration, List of Totalization Agreements (verified 2026-06-07)
Last reviewed .
Common services needed by expats in Kuwait
Most Americans abroad in Kuwait need help with at least one of the following core compliance areas, which frequently interact:
- US expat tax returns, Form 1040 with FEIE, FTC, treaty positions, and any required state returns.
- FBAR reporting, FinCEN Form 114 for foreign financial accounts exceeding $10,000 aggregate at any time during the year.
- Form 8938 (FATCA), IRS disclosure of specified foreign financial assets when thresholds are met.
- Streamlined catch-up filing, For eligible non-willful taxpayers with prior unfiled years.
Related country guides
- US expat tax in United Arab Emirates
- US expat tax in Saudi Arabia
- US expat tax in Qatar
- US expat tax in Bahrain
- US expat tax in Iraq
- US expat tax in Israel