If you are a self-employed American living abroad, here is the trap nobody explains clearly: the Foreign Earned Income Exclusion (FEIE) on Form 2555 wipes out your income tax, but it does NOT touch your 15.3% self-employment (SE) tax. You can legitimately owe $0 federal income tax on your freelance, consulting, or online-business profit and still owe thousands of dollars in SE tax to Social Security and Medicare. This US expat self-employment tax + FEIE calculator is the rare tool that models both at once, so you see the number that actually leaves your bank account.
Enter your net self-employment profit, your filing status, and (optionally) other foreign wages, and the calculator computes your Form 2555 income-tax exclusion, your Schedule SE self-employment tax for 2026, the half-SE deduction, and your real combined liability — including a KRW conversion for readers in Korea.
This is the single most misunderstood point in expat self-employment taxation, so let us be blunt. The Foreign Earned Income Exclusion is a relief from income tax only. It is claimed on Form 2555 and it flows to Form 1040 / Schedule 1 as a subtraction from your income. Self-employment tax is a completely separate tax — it funds your Social Security and Medicare — and it is computed on Schedule SE directly from your net profit on Schedule C. Nothing on Form 2555 ever touches Schedule SE. That is why "feie does not exclude self employment tax" is the truth every freelancer abroad eventually learns, often the hard way at tax time.
The self-employment tax is 15.3%, but not on your whole profit. The steps are:
Below $400 of net earnings you owe no SE tax at all. One half of whatever SE tax you do owe is deductible against income tax — although, as we will see, that deduction is often nearly worthless to an expat whose income is already fully excluded.
Consider a US freelancer in Seoul with $90,000 of net self-employment profit and the FEIE claimed in full:
| Item | Amount (2026) |
|---|---|
| Net SE profit (Schedule C) | $90,000 |
| SE tax base (× 92.35%) | $83,115 |
| Social Security portion (12.4%) | $10,306 |
| Medicare portion (2.9%) | $2,410 |
| Self-employment tax (Schedule SE) | $12,717 |
| FEIE income excluded (Form 2555) | $90,000 |
| Federal income tax | $0 |
| Total US federal tax | $12,717 |
The income tax is genuinely zero because $90,000 is below the $132,900 exclusion. Yet the SE tax of roughly $12,717 is fully owed. That single line is why the combined calculator on this page exists — a FEIE-only tool would tell you "$0" and be dangerously wrong about your actual cash bill.
Section 911 of the Internal Revenue Code, which creates the FEIE, is written as an exclusion from gross income for income-tax purposes. Self-employment tax is imposed by Chapter 2 of the Code on "net earnings from self-employment," a base that is defined independently of Section 911. Because the two live in different parts of the tax law, excluding income under Section 911 never shrinks the Chapter 2 base. The IRS makes this explicit in the Form 2555 and Schedule SE instructions: you compute SE tax on your full net profit first, then exclude income for income-tax purposes afterward.
Some expats switch from the FEIE to the Foreign Tax Credit (FTC) to offset US income tax with foreign income taxes paid. That can be smart for income tax, but the FTC also cannot offset SE tax — SE tax is not an income tax, so foreign income taxes do not credit against it. The only mechanism that removes US SE tax is a Social Security Totalization Agreement.
The United States has bilateral Totalization Agreements with around 30 countries. If you live in an agreement country and contribute to that country's social-security system, you obtain a Certificate of Coverage and are exempt from US Social Security and Medicare (SE) tax on that income. Crucially, South Korea's agreement with the US generally assigns self-employed coverage based on residence, but the practical availability of a US-SE-tax exemption for the self-employed depends on your specific facts — many self-employed Americans in Korea still find themselves owing US SE tax. Always confirm with the SSA before assuming you are exempt; see our dedicated US-Korea totalization calculator linked below.
To claim the exclusion at all you must pass one of two tests. The Physical Presence Test requires 330 full days outside the US in any 12-month period — purely a day-count. The Bona Fide Residence Test requires that you be a genuine resident of a foreign country for an uninterrupted tax year, judged on the facts of your life (home, family, intent). Self-employed digital nomads who move frequently usually rely on the Physical Presence Test; long-term residents of Korea typically qualify under Bona Fide Residence.
Domestic self-employed filers love the deduction for one half of SE tax because it cuts their taxable income. For an expat whose income is already fully excluded by the FEIE, that deduction often saves nothing — there is no income tax left for it to reduce. This asymmetry means the SE tax is, in effect, a hard floor on your US tax bill abroad: the FEIE removes the income tax around it, but the SE tax stands.
Because SE tax is not withheld for the self-employed, you generally must pay estimated quarterly taxes (Form 1040-ES) to cover it, even when your income tax is zero. Missing the quarterly deadlines can trigger underpayment penalties on the SE-tax portion. Build the number this calculator gives you into four quarterly payments rather than facing it all in April.
On top of the FEIE, Form 2555 lets qualifying expats claim a foreign housing exclusion or deduction for high rent abroad, tied to the exclusion amount. Like the FEIE itself, the housing exclusion only reduces income tax. It does nothing for SE tax. It is still worth claiming if you have US income tax to offset, but it will not move the SE-tax number on this page.
Some high-earning expat consultants consider an S-corporation to convert part of their profit into distributions that are not subject to SE tax. This is a legitimate domestic strategy, but abroad it interacts awkwardly with the FEIE (S-corp distributions are not "earned income" and cannot be excluded), with foreign corporate rules, and with reasonable-compensation requirements. It is rarely a clean win and should only be done with professional advice; for most freelancers, paying the SE tax is simpler and safer than an offshore-entity structure.
The SE-tax figure here follows the exact Schedule SE method (92.35% base, 12.4% Social Security up to $184,500, 2.9% Medicare uncapped, plus 0.9% Additional Medicare over the threshold) and is reliable. The income-tax figure uses the official 2026 brackets and the Form 2555 "stacking" rule, which taxes any non-excluded income at the rate it would face on top of the excluded amount; it is a close estimate but does not model every credit, the housing exclusion, state tax, or the Net Investment Income Tax. Treat the SE-tax output as precise and the income-tax output as a solid planning estimate.
No. The Foreign Earned Income Exclusion on Form 2555 removes your foreign earnings from US income tax, but it does NOT reduce self-employment (SE) tax. SE tax is the 15.3% Social Security and Medicare tax, and it is computed on your full net self-employment earnings before any FEIE. So a self-employed American abroad can owe $0 income tax yet still owe thousands in SE tax.
Self-employment tax is 15.3% of 92.35% of your net self-employment profit. The 12.4% Social Security portion applies up to the 2026 wage base of $184,500; the 2.9% Medicare portion has no cap, plus an extra 0.9% Additional Medicare tax above $200,000 (single) or $250,000 (married filing jointly). One half of the SE tax is deductible against income tax.
Only through a Totalization Agreement. If you live in a country that has a US Social Security totalization agreement and you pay into that country's system, you can get a Certificate of Coverage and be exempt from US SE tax. The United States has no totalization agreement with many countries (including South Korea for the self-employed in practice), so most self-employed expats there still owe the full 15.3% US SE tax.
You owe self-employment tax once your net self-employment earnings reach $400 in a year. Below $400 of net profit, no SE tax is due. The threshold is the same for expats as for residents and is checked before applying the 92.35% factor.
Yes. You deduct one half of your self-employment tax as an adjustment to income on Schedule 1, just like a domestic filer. This deduction reduces taxable income, but because the FEIE may already wipe out your income tax, the practical income-tax benefit of the deduction can be small for expats whose income is fully excluded.
No. Schedule SE is computed from your net self-employment profit on Schedule C; the Form 2555 exclusion is applied later, only against income tax on Form 1040. Excluding income on Form 2555 never lowers the SE tax base, which is why expats commonly see a $0 income-tax bill alongside a large SE-tax bill.
Report gross self-employment income and expenses on Schedule C, carry the net profit to Schedule SE to compute the 15.3% SE tax, and separately enter your foreign earned income on Form 2555 to exclude it from income tax. The excluded amount flows as a negative number to Schedule 1, while the SE tax flows to Schedule 2.
For tax year 2026 the maximum foreign earned income exclusion is $132,900 per qualifying person, indexed annually for inflation under IRC Section 911. Married spouses who each qualify can each claim their own exclusion. This exclusion applies only to income tax, never to self-employment tax.