Sweden SINK Tax: Cut Nonresident Rate to 22.5%

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As of January 2026, Sweden cut special income tax for non-residents (SINK) from 25% to 22.5%. On SEK 400,000 of Swedish pay for a four-month assignment, that is SEK 10,000 less Swedish tax than 2025 — and SEK 39,520 less than Skatteverket's 32.38% average municipal rate if you stayed on ordinary Swedish income tax. Miss the application, sleep in Sweden for six months, or keep a year-round Swedish home, and that 22.5% flat rate never attaches.

This is a supporting playbook for limited-liability Swedish income, not a second Sweden country guide and not the resident expertskatt relief for inbound specialists. The rest of this article is the 2026 rate, the SEK 3,799 monthly pension allowance, the 183-day employment exemption, and the US forms that still sit underneath every krona.

Primary reader: a retiree collecting a Swedish pension from another country, or an operator on a short Swedish assignment. Secondary notes cover board members, families with a Swedish house they never fully left, and US citizens who assume the treaty saving clause disappeared.

What is Sweden SINK, and who actually qualifies?

SINK is Sweden's final withholding tax for people with limited Swedish tax liability. Skatteverket's English SINK page is explicit: if you live abroad and will work in Sweden for less than six months, or if you receive a Swedish pension, you can apply for SINK. If Skatteverket issues a decision, the payer withholds at the SINK rate and you generally do not file a Swedish income tax return.

Limited liability is the gate, not a passport stamp. If you still have significant connections to Sweden — Skatteverket's pension page names a residence designated for year-round use, or a Swedish property that keeps you tied — you can remain unlimitedly taxable. Then ordinary Swedish rules apply, you file a Swedish return, and SINK is the wrong tool.

The 2026 and 2027 rates, in krona

Skatteverket's 2026 amounts page and the English SINK pages both state that the Riksdag cut SINK from 25% to 22.5% of taxable income from 1 January 2026, for income received after 31 December 2025. The same decision sets a further cut to 20% from 1 January 2027. Seafarer income under SINK is a separate 15% rate for 2026.

Until a SINK decision exists, a payer that must withhold typically takes 30% preliminary tax. Skatteverket will refund the excess after a later SINK decision, but only after the payer has filed the relevant PAYE return. That lag is a cash-flow problem, not a rounding error.

Data note: SINK rates, the pension allowance, and the 32.38% average municipal rate were checked against Skatteverket in September 2026 and can change in a later Riksdag decision.

How much Swedish tax does SINK actually remove?

SINK is a flat tax on the Swedish slice. Ordinary Swedish taxation for a limited-liability person who opts into the Income Tax Act uses the nationwide average municipal rate — 32.38% for 2026 — plus 20% state income tax on taxable earned income above SEK 643,000. You only get the basic allowance and earned-income credit on that track if at least 90% of your total earned income for the year is from Sweden, and you then must file a Swedish return.

That municipal comparison is the honest one for a short assignment that never hits the SEK 643,000 state band. A high earner who opts into ordinary tax can also owe the 20% state layer. SINK does not have that extra band. The tradeoff is that SINK generally has no deductions: travel, dual housing, and most expenses do not come off the 22.5%.

The pension allowance that salary does not get

SINK on salary and occupational pension generally starts at the first krona. Social-insurance pension is different. Skatteverket's pension SINK page and the 2026 amounts table allow a monthly tax-free amount of SEK 3,799 for 2026 (SEK 3,773 for 2025). That allowance is one-twelfth of 0.77 price base amounts. It applies to income-related retirement pension, guarantee pension, survivors' pension and survivor benefits, sickness compensation, and activity compensation. Children's pension is excluded. Occupational (tjänstepension) and private pension insurance do not get this allowance.

2026 Swedish-source income (illustrative)	SINK taxable base	Swedish SINK at 22.5%	Ordinary municipal 32.38% (no state tax)
SEK 400,000 short-assignment salary	SEK 400,000	SEK 90,000	SEK 129,520
SEK 240,000 occupational pension	SEK 240,000 (no allowance)	SEK 54,000	SEK 77,712
SEK 180,000 public pension (SEK 15,000/mo)	SEK 134,412 after SEK 3,799 × 12	SEK 30,243	Depends on grundavdrag; not automatic SINK math
SEK 45,588 public pension (exactly the allowance)	SEK 0	SEK 0	Ordinary tax still possible if you opt in
Seafarer income on a Swedish-flagged ship	Full SINK base	15% SINK, not 22.5%	Ordinary rules if you opt out of SINK

The last public-pension row is why some low Swedish public pensions look "cheap" under SINK and expensive if you elect ordinary tax without the 90% Sweden-income test. Model both before you tick the Income Tax Act box on form SKV 4350.

Do I still owe Swedish tax if I stay under 183 days?

Two clocks are not the same clock. Skatteverket's SINK application page uses a six-month sleeping in Sweden test for the ordinary SINK work path. Stay six months or longer and you are told to file a notification of preliminary A-tax instead. "Staying" means you sleep in Sweden. Daily commuters and cross-border commuters can still apply for SINK.

Separately, the SINK 183-day rule can exempt employment income entirely when all of these hold: you stay in Sweden no more than 183 days in a 12-month period; the pay is paid by (or on behalf of) an employer that is not based in Sweden; the pay is not charged to a Swedish permanent establishment of that employer; and the work is not for the Swedish state, a municipality, or a region. From 1 January 2021, that exemption does not apply to outsourced or hired-out workers performing temporary assignments in Sweden. A 15-consecutive-day / 45-day-per-year exception exists inside the hiring-out definition, not as a free pass for staffed consulting.

Board members are the other trap. Skatteverket says if you live abroad and receive board fees from a Swedish business, you pay SINK on those fees regardless of where you do the board work. You still need a SINK decision so the payer withholds the right rate. A tax treaty can override Sweden in some cases; do not assume the US–Sweden treaty does that for a US citizen.

Do I still owe US tax if SINK cuts the Swedish bill?

Yes. US citizens and green-card holders file Form 1040 on worldwide income. The US–Sweden income tax treaty contains the usual saving clause: the United States generally keeps the right to tax its citizens as if the treaty were not in force, with listed exceptions. SINK does not punch a hole in that clause. For the mechanics of that clause across treaties, use the recent US tax treaty saving-clause explainer.

The useful US tools are the foreign tax credit on Form 1116 and, for earned income only, the foreign earned income exclusion on Form 2555. As of tax year 2026, the IRS maximum FEIE is $132,900 per qualifying person. Pension and annuity income is not foreign earned income. If you are a retiree collecting Swedish pension, FEIE is the wrong lever. Credit the SINK, subject to the Form 1116 limitation, rather than trying to exclude it.

Form 1116 only credits foreign income tax that you are legally required to pay. If a treaty later says Sweden cannot tax a slice, you cannot credit the extra withholding you failed to reclaim. Article 19 of the US–Sweden treaty generally gives exclusive residence-country taxation to private pensions and annuities, but paragraph 2 gives exclusive source-country taxation to social-security and similar payments — including Swedish allmän tilläggspension — paid to a resident of the other state or to a US citizen. That is an exception to the saving clause. Map each Swedish payment (public pension vs occupational vs private) before you dump every SINK kronor onto one Form 1116 basket.

If you exclude Swedish wages under section 911, you generally cannot credit Swedish tax on the excluded slice. For a four-month Stockholm assignment under the 2026 $132,900 cap, run both models. In a 22.5% Swedish / US ordinary-rate stack, Form 1116 often beats FEIE because SINK is a real income tax and you want it to offset US tax instead of disappearing with excluded wages. The broader fork lives in the Expat Tax & Finance library and the FEIE versus foreign tax credit comparison.

Social Security versus Swedish coverage on a short assignment

SINK is an income tax. Swedish social-security contributions are a different statute. The US–Sweden totalization agreement assigns coverage so the same earnings are not taxed by both systems. SSA's pamphlet states that if you work as an employee in Sweden you are normally covered only by Sweden, and if you work as an employee in the United States you are normally covered only by the United States. A detached worker sent by a US employer for an assignment expected to last five years or less can remain in US Social Security, proved with a Certificate of Coverage.

Self-employed workers are assigned by residence: US residents stay in US coverage; Swedish residents stay in Swedish coverage. SSA's Sweden pamphlet also notes that the agreement covers Swedish sickness compensation, activity compensation, guaranteed pension, income-based old-age pensions, and survivors' pensions — not Swedish health insurance, unemployment, work-accident, or family-allowance benefits. Price private health cover if a US Certificate of Coverage keeps you out of Swedish sickness coverage.

Use the US totalization agreement guide for the certificate request path. SINK does not replace that form.

How do you apply, and what should the cash-flow stack look like?

Apply yourself or have the payer apply. Skatteverket's English page prefers the e-service; you need an email address for a login code, not Swedish BankID. Paper form SKV 4350 still works and is slower. Artists and athletes use A-SINK on form SKV 2730, not the ordinary e-service. Enclose a passport copy (or national ID). If you have no Swedish personal identity number, you may need a coordination number issued after an identity check at a Swedish state service centre.

A SINK decision is per income year. Skatteverket will not process next year's work application before December. Give the decision notice to every payer. If you have a Swedish digital mailbox, the decision goes there instead of paper. You can later request a review and switch from SINK to ordinary Income Tax Act treatment, or the reverse, for several years back — Skatteverket's English page describes a six-year window from the end of the income year on one version and a five-year window on the pension page. Treat the shorter window as the planning assumption and confirm the current text on your decision letter.

1. Confirm limited Swedish tax liability: no year-round Swedish home, and a stay under six months if you are working in Sweden.
2. List every Swedish-source payment: salary, board fee, public pension, occupational pension, private pension, seafarer pay.
3. Apply for SINK (or the 183-day exemption analysis) before the first payday so withholding is 22.5% rather than 30%.
4. Model SINK versus opting into the Income Tax Act if more than 90% of your earned income is Swedish and deductions would matter.
5. Map each payment onto US Form 1040: earned income vs pension vs social-security-equivalent, then Form 1116 vs Form 2555.
6. Start the totalization Certificate of Coverage if a US employer is sending you, before Swedish social charges hit payroll.
7. Open or keep a US brokerage you can still trade from your actual country of residence. Charles Schwab is the common expat-friendly path for USD investing and ATM access; confirm Sweden or your residence country is on the international account list before you change your address.
8. Track foreign accounts against the FBAR $10,000 aggregate peak. The IRS FBAR (FinCEN Form 114) is due April 15 with an automatic extension to October 15. A Swedish pension payout account is a foreign financial account if it is held at a non-US institution.
9. Check Form 8938. Taxpayers living abroad file if specified foreign assets exceed $200,000 on the last day of the year or $300,000 at any time ($400,000 / $600,000 on a joint return), per the IRS Form 8938 threshold page.
10. If you still own a Swedish house you visit, re-test unlimited tax liability before you assume SINK still fits.

Conclusion

SINK is Sweden's 22.5% final withholding for limited-liability people on short Swedish work or Swedish pensions, dropping to 20% in 2027. The cash-flow win is real against 32.38% municipal tax on a four-month paycheck, and the SEK 3,799 monthly allowance makes public pensions cheaper than occupational pensions of the same size. It does not silence the US saving clause, does not replace FBAR or Form 8938, and does not apply if you kept a year-round Swedish home or slept in Sweden for six months.

If you are moving to Sweden as a resident specialist, use expertskatt. If you are only collecting Swedish pension from Portugal, Mexico, or a US snowbird calendar, SINK plus Form 1116 is the stack to model first.

Data notes / Sources checked

Figures in this article are as of September 2026 unless a source date is given.

• Skatteverket — SINK for non-residents (English)
• Skatteverket — SINK on pensions (English)
• Skatteverket — amounts and percentages, income year 2026
• Skatteverket — SINK 183-day rule FAQ
• US–Sweden income tax treaty (State Department text)
• IRS — Instructions for Form 1116
• IRS — figuring the foreign earned income exclusion
• IRS — FBAR (FinCEN Form 114)
• IRS — Form 8938 thresholds
• SSA — totalization agreement with Sweden