Tax residence in Czechia for U.S. citizens and green card holders

Czechia treats you as a tax resident if you have a home there that you intend to keep (bydliště) or if you stay at least 183 days in the calendar year. U.S. citizens remain taxable in the United States; the U.S.–Czech treaty settles dual residence.

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Free, no sign-up, about 3 minutes. Conclusion under U.S. law, compared with the law of the Czech Republic and the tax treaty.

When Czech Republic treats you as a tax resident

Czech law does not test the centre of vital interests: a permanent home in the Czech Republic (bydliště) or 183 days of presence is enough.

You have a permanent home in the Czech Republic (bydliště), so under Czech law you are a Czech tax resident from the day that home arose, wherever your family lives.
You spent 183 days or more in the Czech Republic in the calendar year — you are a Czech tax resident for the whole year, retroactively from 1 January.

When you are a nonresident

You are in the Czech Republic only to study or for medical treatment — under § 2(3) ZDP you are a non-resident even after 183 days.
No permanent home in the Czech Republic and fewer than 183 days — you are a Czech non-resident. Czech-source income (including pay for work physically done in the Czech Republic) is still taxed there.

Where the rules of the Czech Republic clash with U.S. tax rules

Collision: a Czech home is enough for Czech residence. Czech law does not look at the centre of vital interests: a permanent home in the Czech Republic makes you resident even if your family and economic life are in the United States (NSS, 10 Afs 195/2017). The United States taxes you as a citizen, green-card holder or substantial-presence resident. The treaty tie-breaker (Art. 4(4)) then decides treaty residence: permanent home, then centre of vital interests, habitual abode and nationality. For U.S. citizens the result matters mainly for Czech tax: under the saving clause (Art. 1(3)) the United States keeps taxing you, and double tax is relieved under Art. 24.
Collision: 183 days in the Czech Republic with a home in the U.S.. After 183 days the Czech Republic treats you as resident for the whole year from 1 January, while the United States treats you as resident as well. Under Art. 4(4) of the Convention, if you have a permanent home only in the United States you are a U.S. resident for treaty purposes (NSS, 1 Afs 239/2017, sequential application). But under the GFŘ methodology even a rented flat in the Czech Republic can be a permanent home — then the centre of vital interests decides.
U.S. citizens and green-card holders without real U.S. ties. Art. 4(2)(c) of the Convention is unusual: the Czech Republic regards a U.S. citizen or green-card holder as a U.S. resident only if he or she has a substantial presence, a permanent home or a habitual abode in the United States. If you have none of these, the Czech Republic treats you as a Czech resident only — the tie-breaker is not even reached. The United States still taxes citizens under the saving clause (Art. 1(3)); a green-card holder treated as a treaty resident of the Czech Republic should check the U.S. consequences in the U.S. part of the result.

What else to know

U.S. citizens: the saving clause and how double tax is relieved. Even if the treaty makes you a Czech resident, the United States taxes its citizens as if the Convention did not exist (Art. 1(3)); the relief article is excepted (Art. 1(4)(a)). Relief works in three steps: the Czech Republic taxes your worldwide income and credits U.S. tax only on income the U.S. may tax as the source state (Art. 24(2)); the United States treats income it taxes only because of citizenship as Czech-source to the extent needed and credits Czech tax (Art. 24(3), (1)); U.S. tax cannot fall below what a non-citizen would pay on U.S.-source income. Alternatively, foreign earned income may be excluded under § 911 (no credit on excluded income).
Year of moving: the Czech Republic splits the year. The Czech Republic recognises split-year residence under a treaty (dělená rezidence): part of the year you may be a U.S. treaty resident, part a Czech one. A U.S. citizen is taxed by the United States on worldwide income for the whole calendar year regardless. Both countries use the calendar year as the tax year.
Working in the Czech Republic for a U.S. employer. Pay for work physically performed in the Czech Republic is Czech-source income even if the employer is American. If you are a U.S. treaty resident, the Czech Republic must exempt it only if you are present there no more than 183 days in any twelve month period (not the calendar year), the employer is not Czech-resident and the pay is not borne by a Czech permanent establishment (Art. 15(2)). If you are a Czech resident, the Czech Republic taxes the salary in full; a U.S. citizen then claims a U.S. foreign tax credit for the Czech tax or the § 911 exclusion.
Social security: U.S.–Czech totalization agreement. A U.S.–Czech social security agreement has applied since 1 January 2009. As a rule you pay into the system of the country where you work; an employee sent to the Czech Republic by a U.S. employer (or a self-employed person moving there) for five years or fewer stays in U.S. Social Security. To be exempt from the other system you need a certificate of coverage — keep it for payroll and attach it to the U.S. return if self-employed.

How dual residence is resolved

If both countries treat you as a resident, Art. 4(4) of the treaty applies: Convention between the United States of America and the Czech Republic for the avoidance of double taxation and the prevention of fiscal evasion with respect to taxes on income and capital (signed 16 September 1993). The tests are applied in order — permanent home, center of vital interests, habitual abode, nationality, and finally mutual agreement between the tax authorities. U.S. citizens remain taxable in the United States under the saving clause.

Terms you will come across in Czechia

daňový rezident: tax resident
bydliště: permanent home you intend to stay in
obvykle se zdržuje: habitual stay — at least 183 days in the calendar year
dělená rezidence: split residence in the year of arrival or departure
potvrzení o daňovém rezidentství: certificate of tax residence
Finanční správa: Czech Financial Administration

Questions

I am a U.S. citizen — do I still pay U.S. tax if I live in Czechia?

Yes. The United States taxes its citizens on worldwide income wherever they live, and the treaty keeps that right through the saving clause (Art. 1(3)). You file Form 1040 every year; double taxation is relieved mainly by the foreign tax credit (Form 1116) or the foreign earned income exclusion (Form 2555), plus the treaty's relief article (Art. 24).

Which treaty applies between the U.S. and the Czech Republic?

The Convention signed in Prague on 16 September 1993, in force since 23 December 1993. The tie-breaker is in Art. 4(4); the 183 days for salary are counted in any 12-month period (Art. 15(2)).

Does Czechia tax me if I have a flat there?

Yes, a home you intend to keep (bydliště) makes you Czech resident regardless of days, as does a stay of at least 183 days in the calendar year. Under Art. 24(3) the income of a U.S. citizen resident in Czechia is re-sourced so the United States can credit the Czech tax.

Sources

Legislation and official guidance

§ 2(2) of Act No. 586/1992 Coll. on Income Taxes (ZDP) — A Czech tax resident is a person who has a bydliště (domicile) in the Czech Republic or habitually stays there; residents are taxed on worldwide income.
§ 2(4) ZDP — A person habitually stays in the Czech Republic if present there for at least 183 days in a calendar year, continuously or in several periods; every day begun counts. Bydliště is a permanent home held in circumstances showing an intention to stay there permanently.
Czech General Financial Directorate (GFŘ), «Informace k určování daňové rezidence fyzických osob», ref. 39105/26/7100-20113-010370 (2026) — 183 days make you resident retroactively from 1 January; a bydliště makes you resident from the day it arises; a split year (dělená rezidence) is possible under a treaty; days of arrival and departure count for both states; a residence permit or the country of health insurance does not matter; the burden of proof is on the taxpayer.
§ 2(3) ZDP — A person staying in the Czech Republic only to study or for medical treatment is a non-resident, even if he or she habitually stays there.
§ 22(1)(b) ZDP — Pay for work performed in the Czech Republic is Czech-source income, whoever the employer is.
Art. 4(4) of the U.S.–Czech Convention (1993) — Dual-resident individuals: (a) permanent home; if in both states — centre of vital interests (closer personal and economic relations); (b) if that cannot be determined or there is no permanent home in either state — habitual abode; (c) habitual abode in both or neither — nationality; (d) national of both or neither — competent authorities settle the question by mutual agreement.
Art. 1(3)–(4) of the U.S.–Czech Convention (saving clause) — Each state may tax its residents (as determined under Art. 4) and its citizens, including former citizens, as if the Convention had not come into effect. Exceptions (Art. 1(4)(a)) include Art. 9(2), Art. 19(1)(b) and (4), and Arts. 24 (Relief from Double Taxation), 25 (Non-Discrimination) and 26 (Mutual Agreement Procedure).
Art. 4(2)(c) of the U.S.–Czech Convention (1993) — The Czech Republic considers a U.S. citizen or a green-card holder to be a U.S. resident only if that person has a substantial presence, permanent home or habitual abode in the United States.
Art. 24 of the U.S.–Czech Convention (Relief from Double Taxation) — (1) The United States credits Czech income tax to its residents and citizens. (2) The Czech Republic includes treaty-taxable U.S. income in the base but deducts the U.S. tax paid (other than solely on the basis of citizenship), capped at the Czech tax on that income. (3) For a U.S. citizen resident in the Czech Republic, income the U.S. may tax solely by reason of citizenship is deemed to arise in the Czech Republic to the extent necessary to avoid double taxation; U.S. tax may not be less than it would be if the person were not a U.S. citizen.
26 U.S.C. § 901(b)(1) — A U.S. citizen may credit income taxes paid or accrued to a foreign country (subject to the limitations of § 904).
26 U.S.C. § 911(a), (d)(1), (d)(6) — A qualified individual (tax home abroad and bona fide residence for an entire taxable year, or 330 full days abroad in 12 consecutive months) may elect to exclude foreign earned income and a housing amount; no foreign tax credit is allowed for taxes allocable to the excluded income.
Art. 15(2) of the U.S.–Czech Convention (Dependent Personal Services) — Employment income for work in the other state is taxable only in the state of residence if the employee is present in the other state for no more than 183 days in the aggregate in any twelve month period, the pay is not made by or on behalf of an employer resident in the other state, and it is not borne by a permanent establishment or fixed base of the employer there.
U.S.–Czech Social Security Agreement (SSA pamphlet) — Generally only one country's social security covers the work; a detached worker or self-employed person moving to the other country for five years or fewer keeps the coverage of the country left; a certificate of coverage is needed to be exempt from U.S. Social Security contributions.
SSA POMS GN 01749.105 — The agreement with the Czech Republic took effect on 1 January 2009.
§ 38f ZDP — Double taxation is eliminated as provided in the applicable treaty — by ordinary credit or by exemption with progression.
Art. 4(4)(a) of the Convention — An individual resident in both states is deemed resident of the state where he has a permanent home available to him; if he has one in both states, of the state with which his personal and economic relations are closer (centre of vital interests).
Art. 4(4)(b) of the Convention — If the centre of vital interests cannot be determined, or there is no permanent home in either state, the individual is resident of the state where he has an habitual abode.
Art. 4(4)(c), (d) of the Convention — Habitual abode in both or neither state → state of nationality; national of both or neither → competent authorities settle the question by mutual agreement.

Case law

Nejvyšší správní soud (Supreme Administrative Court, Czech Republic), 10 Afs 195/2017-57, 2018-07-16 — The Income Taxes Act does not use the concept of a centre of vital interests: what matters for bydliště is a permanent home in the Czech Republic with the intention to live there permanently; family abroad is irrelevant under domestic law.
Nejvyšší správní soud (Supreme Administrative Court, Czech Republic), 7 Afs 251/2014-40, 2015-01-22 — Bydliště is not the same as a registered address or ownership of real estate — these are only indirect indications; a conclusion based on registration alone, without weighing work, studies and family abroad, cannot be reviewed.
Nejvyšší správní soud (Supreme Administrative Court, Czech Republic), 1 Afs 239/2017-37, 2017-11-01 — The treaty tie-breaker criteria apply in sequence: if a permanent home is available in only one state, the person is resident there; the centre of vital interests is examined only if there is a permanent home in both states. (Decided under the Czech treaty with another state; the wording follows the OECD Model, as does Art. 4(4) of the U.S.–Czech Convention.)

Updated 2026-11-04. The result is for information only and is not tax or legal advice. Tax authorities and courts may interpret the rules differently, including because of circumstances not covered here, and the law changes. Consult a qualified adviser before making decisions.

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