A paycheck in Kuwait typically arrives with nothing withheld for personal income tax, which leads plenty of American engineers, contractors, and oil-sector professionals to assume the IRS drops off the same way. It doesn't. Kuwait's tax code is built around foreign-owned corporate profits, plus a Zakat contribution and National Labor Support Tax that fall on certain Kuwaiti and Gulf-listed shareholding companies, none of which reach an individual's salary. Every US citizen and green card holder working in Kuwait still owes the IRS a full Form 1040 on worldwide income each year, and for the oil-and-gas expat packages common in Kuwait, that return can get complicated fast once total compensation climbs past what any exclusion can shelter.
Do US Citizens Living in Kuwait Have to File Both Kuwait and US Tax Returns?
Kuwait's tax authority has no mechanism for taxing an individual's salary or wages, so the overwhelming majority of people living and working in Kuwait never file a personal income tax return there at all. What the tax authority does administer is corporate income tax, most visibly on foreign companies doing business in Kuwait, along with Zakat and National Labor Support Tax obligations for certain listed Kuwaiti and GCC shareholding companies, none of which have anything to do with an employee's paycheck.
None of that changes the US filing requirement. The United States taxes its citizens and green card holders on worldwide income no matter where they live, independent of whatever the local government does or doesn't tax. A US citizen drawing a Kuwaiti salary that the local tax authority never touches still owes the IRS a Form 1040 every year, reporting that salary alongside any investment income, self-employment income, or other income earned anywhere in the world. The one local filing an American in Kuwait might actually face is corporate tax exposure from owning a Kuwaiti business, a narrow category that has nothing to do with personal wages.
How Does Kuwait Tax Residents?
Kuwait's revenue system is built almost entirely around corporate and business activity rather than individual earnings. A foreign-owned entity doing business in Kuwait can owe Kuwait's corporate income tax on its profits, and Kuwaiti or GCC shareholding companies listed on the Kuwait exchange separately owe Zakat and National Labor Support Tax contributions. Employees, whether Kuwaiti nationals, other GCC nationals, or foreign hires, sit outside all three of those regimes; nothing in Kuwait's tax code reaches a salary, a bonus, or personal investment income earned by an individual worker.
That structure flips the usual planning question for Americans abroad. In a country that taxes wages heavily, the Foreign Tax Credit often wipes out US liability on its own because the foreign credit is large enough to absorb it. In Kuwait, there is ordinarily no local wage tax to credit at all, so the Foreign Tax Credit accomplishes very little for a Kuwait salary. An American who defaults to the FTC out of habit, assuming it is the "safer" choice, can end up owing the IRS in full on income that a treaty country with real local withholding would have sheltered.
Should You Claim the FEIE or the Foreign Tax Credit on Kuwait Income?
For most Kuwait-based wage earners, Form 2555's Foreign Earned Income Exclusion does the heavy lifting, precisely because there is little or no Kuwait tax on wages to feed a Foreign Tax Credit claim. The exclusion shelters foreign earned income up to an annually indexed ceiling, $130,000 for the 2025 tax year, which comfortably covers a typical Kuwait posting but can fall short for the oil-and-gas and engineering packages that routinely push total compensation well past that figure once housing and hardship allowances are added in.
Form 1116's Foreign Tax Credit only offsets US tax dollar-for-dollar against foreign income tax actually paid, and with no Kuwait wage tax to point to, an American relying on the FTC alone would typically owe US tax on the full salary above the standard deduction. It still earns its keep for Americans in Kuwait with US-source income or tax paid to a different country in the same year, with any unused credit carrying forward under the rules summarized in the table below.
Two limits apply no matter which election you pick. The FEIE excludes foreign earned income from regular tax but leaves self-employment tax untouched, so a self-employed American in Kuwait still owes the full 15.3 percent on net earnings even after Form 2555 zeroes out the income tax side, and it can knock out the refundable Child Tax Credit for families who claim it. Revoking the FEIE also carries a five-year lockout before you can elect back in without IRS consent, which makes the FEIE-versus-FTC call worth running as a real projection rather than a coin flip.
Is There a US-Kuwait Tax Treaty, and What If There Isn't?
Kuwait and the United States have never concluded an income tax treaty, and no Social Security totalization agreement sits alongside it either. That double absence removes tools Americans in treaty countries take for granted, including a tie-breaker test for dual-residency disputes, treaty-reduced withholding on cross-border payments, and any treaty-based deferral for a Kuwaiti retirement arrangement.
Even where a US treaty does exist with another country, a saving clause typically lets the United States tax its own citizens as though the treaty were not in effect, which limits how much benefit a treaty provides US citizens abroad even at its best. With no treaty at all in Kuwait, that question is moot, and every filing position has to be built directly on the Internal Revenue Code rather than on treaty relief.
That gap lands hardest on self-employed Americans in Kuwait. With no totalization agreement to coordinate the two systems, a self-employed US citizen working in Kuwait owes full US self-employment tax on the same income, with nothing in place to prevent the kind of double Social Security-style taxation that a totalization agreement would otherwise resolve.
What Foreign Accounts and Assets Must You Report?
Skipping Kuwait's income tax does not skip US reporting on what you hold there. Americans in Kuwait commonly bank with National Bank of Kuwait, Kuwait Finance House, or a multinational bank's local branch, and once the combined balance across those accounts, plus any brokerage or eligible retirement account, tops $10,000 at any single moment during the year, FinCEN Form 114 (the FBAR) becomes mandatory. It is filed with the Treasury Department separately from your tax return, and it applies whether or not you owe the IRS a dollar.
Form 8938 rides alongside the FBAR as an entirely separate FATCA obligation, filed with your actual tax return and triggered by its own thresholds that shift based on filing status and whether you live inside or outside the United States. Depending on your account balances you could owe an FBAR, a Form 8938, both, or neither, and each carries its own penalty exposure that runs independent of whatever additional tax turns out to be due.
Are Kuwait Investment Funds Taxed as PFICs?
The mutual funds and unit trusts sold through Kuwaiti and wider Gulf-region banks and brokerages fall squarely into the passive foreign investment company category under IRC Section 1297, since they hold portfolios of passive assets rather than run an operating business. Every one of those funds you hold requires its own Form 8621, and the classification triggers the default excess-distribution regime under IRC Sections 1291 and 1298, which taxes gains and certain distributions at the top ordinary rate plus an interest charge for the years the gain was deemed deferred, whether or not the fund ever paid you anything.
A Qualified Electing Fund or mark-to-market election can trade that punitive default for something closer to ordinary capital gains treatment, but a QEF election needs annual information most Gulf-domiciled funds are not set up to produce, which leaves mark-to-market as the more workable option for a US person holding Kuwaiti fund shares. Because the PFIC label attaches fund by fund, any pooled investment opened in Kuwait is worth reviewing before you buy in, not after the first Form 8621 comes due.
How Are Kuwait Pensions and Retirement Accounts Taxed by the US?
Being exempt from Kuwaiti tax is not the same thing as being deferred for US purposes, and a Kuwaiti end-of-service benefit or a payout from the Public Institution for Social Security (PIFSS) gets no free pass just because Kuwaiti law treats it favorably. With no treaty provision to lean on, the analysis runs through the general rules of IRC Sections 401(a) and 402(b), which decide whether an employer plan's contributions count as current income to the employee and whether the plan's growth is taxed as it accrues or only once distributed.
PIFSS contributions, employer-funded end-of-service gratuities, and any retirement plan a Kuwaiti or multinational employer offers on top of those each need their own look under those Code sections, since the outcome turns on how the plan is funded, who actually controls the assets, and whether the employee has a vested right to reach the money now. Some setups will resemble a nonqualified deferred compensation plan closely enough that contributions get taxed as received; others may support a real deferral position. With no treaty to shortcut the question, that plan-by-plan review needs to happen before anyone assumes a Kuwaiti retirement benefit is safely deferred for US purposes.
Bottom Line
The biggest trap in Kuwait is treating "no income tax" as "no US tax problem." A US citizen or green card holder there still owes the IRS a Form 1040 on worldwide income every year, and because there is no Kuwait wage tax to credit and no treaty or totalization agreement to soften the edges, the Foreign Earned Income Exclusion ends up doing most of the work of keeping that bill manageable, right up until an oil-sector compensation package or a Gulf-domiciled fund pushes past what the exclusion covers. Self-employment tax, FBAR, Form 8938, and PFIC reporting on any Kuwaiti investment funds all run on their own independent tracks regardless of what the FEIE accomplishes, and getting the FEIE-versus-FTC call wrong, or overlooking a PFIC fund, can turn a country with zero local tax into one of the costlier filing situations a US expat can land in.
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