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

Singapore treats you as resident if you stay or work there 183 days or more in a calendar year. A Singapore citizen or permanent resident who normally lives there is resident without counting days, and for foreigners IRAS applies administrative rules: a continuous stay or employment over three consecutive years, or employment spanning two years with a continuous period of at least 183 days. Tax is assessed for a year of assessment (YA) on the previous year's income — 2026 income is YA 2027 — and foreign income received in Singapore by a resident individual is generally exempt. There is no comprehensive income tax treaty between the United States and Singapore, so U.S. citizens and other U.S. residents rely on the U.S. foreign tax credit or the foreign earned income exclusion.

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

When Singapore treats you as a tax resident

Singapore counts days for the calendar year preceding the year of assessment: for the selected year 2026 — YA 2027. The threshold is 183 days or more (exactly 183 days is enough). Both physical presence in Singapore and days of employment exercised in Singapore count; under IRAS practice, weekends and public holidays, and temporary absences (leave abroad, business trips) during the employment in Singapore, are included. Work as a company director does not count as «employment».

For Singapore citizens and permanent residents IRAS applies the first criterion of s. 2(1): whether the person normally resides in Singapore, except for temporary absences. For foreigners — 183 days and the administrative two- and three-year rules.

The law sets no day threshold for this criterion: what matters is where you actually live and whether your absences are temporary (holiday, business trip, short-term work abroad) and not inconsistent with residing in Singapore. Moving abroad to live there permanently ends this criterion.

IRAS administrative rule (not a statutory provision): a foreigner who stays or works in Singapore continuously for three consecutive calendar years is treated as resident for all three years, even if he or she spent fewer than 183 days in Singapore in the first or third year.

IRAS administrative rule for foreign employees (from 1 January 2007): if employment in Singapore spans two calendar years and the continuous period of employment, together with the stay immediately before and after it, is at least 183 days, the employee is treated as resident for both years. It does not apply to company directors, public entertainers and professionals (consultants, trainers, lecturers, etc.). Foreigners with a work pass of at least a year are provisionally taxed by IRAS as residents, but on final assessment (tax clearance) they become non-residents if their stay was under 183 days.

You stayed or worked in Singapore for 183 days or more in the calendar year — you are a Singapore tax resident for the corresponding year of assessment (for 2026 — YA 2027; s. 2(1) Income Tax Act 1947). Singapore taxes income received in or derived from Singapore at progressive rates of 0–24%; foreign income received in Singapore by a resident individual is generally exempt (s. 13(7A)), except income received through a partnership in Singapore.
You are a Singapore citizen or permanent resident who normally lives in Singapore and leaves only temporarily — you are a Singapore tax resident (s. 2(1) Income Tax Act 1947) whatever the number of days. The conclusion depends on the facts: if you have moved to live abroad, this criterion no longer applies.
You stay or work in Singapore continuously for three consecutive calendar years — under IRAS's administrative rule you are a Singapore tax resident for each of those years, even if you spent fewer than 183 days there in the first or last year. This is tax administration practice, not a statutory rule; if the continuous period ends earlier, your status for the incomplete years will be reviewed.
Your employment in Singapore spans two calendar years, and the continuous period of employment together with your stay immediately before and after it is at least 183 days — under IRAS's administrative rule you are a Singapore tax resident for both years. The rule does not apply to company directors, public entertainers and professionals.

When you are a nonresident

Fewer than 183 days in Singapore in the calendar year, and no other Singapore test makes you resident (normal residence in Singapore for citizens and permanent residents, the two- or three-year rules for foreigners) — you are not a Singapore tax resident. Singapore taxes only your Singapore-source income: employment income at 15% or at the resident rates if that gives more tax (employment of up to 60 days in a year is exempt, except for directors, public entertainers and professionals), director's fees and other income at 24%.
You spent fewer than 183 days in Singapore, but it is unclear whether Singapore is where you normally reside or whether the two- or three-year rules for foreigners apply to you. IRAS decides this on the facts (where you actually live, the length of your employment and stay); if one of the criteria is met, you are resident. Keep evidence of your trips, contract and employment dates.

Where the rules of Singapore clash with U.S. tax rules

Collision: resident of both countries — no tie-breaker. Singapore treats you as resident (183 days, ordinary residence of a citizen or permanent resident, or IRAS's two- and three-year rules), and the United States taxes you as a citizen, green-card holder or substantial-presence resident. Without a treaty nothing resolves the conflict. In practice the overlap is narrow: Singapore taxes income received in or derived from Singapore, and foreign income received in Singapore by a resident individual is generally exempt (s. 13(7A)), except through a Singapore partnership. Double tax therefore falls mainly on Singapore-source income (pay for work done in Singapore, Singapore rents): Singapore taxes it as the source country, and the United States credits the Singapore tax or lets you exclude foreign earned income under § 911.
Collision: Singapore can treat you as resident without 183 days. You are a Singapore resident without 183 days — as a citizen or permanent resident who normally lives in Singapore, or under IRAS's administrative two- and three-year rules for foreigners. The United States treats citizens and green-card holders as resident whatever the days, and others under the substantial presence test, which also weighs the two preceding years. Both countries can therefore treat you as resident for the same year, and with no treaty there is no tie-breaker to settle it.
Collision: green-card holder resident in Singapore — no treaty to rely on. A green card makes you a U.S. resident for the whole year regardless of the days you spend in the United States. Where a treaty exists, a green-card holder can sometimes claim treaty residence in the other country; with no U.S.–Singapore treaty that route is closed, and the closer connection exception is part of the substantial presence test, which does not apply to green-card holders. So while you hold the green card, the United States taxes your worldwide income and Singapore taxes you under its own rules; double tax is relieved only by the U.S. foreign tax credit or the foreign earned income exclusion. The status lasts until the green card is formally revoked or abandoned (Form I-407).

What else to know

No income tax treaty between the United States and Singapore. The United States and Singapore have no comprehensive income tax treaty — only a limited agreement exempting income from the international operation of ships and aircraft (in force since 28 July 1988). Consequences: there is no tie-breaker, so you can be a full resident of both countries at once; no 183-day rule protects short work trips; Singapore withholding rates on payments to U.S. residents are not reduced; there is no mutual agreement procedure. Double tax is relieved only unilaterally: in the United States by the foreign tax credit or the foreign earned income exclusion (§ 911); in Singapore mainly by its exemption for foreign income received by resident individuals (s. 13(7A)) — foreign income that is not remitted to Singapore is not taxed there at all.
Not a U.S. citizen or green-card holder: without a treaty only the closer connection exception helps. You are a U.S. resident only under the substantial presence test. With no U.S.–Singapore treaty you cannot claim treaty nonresidence under a tie-breaker. The only way out of U.S. residence is the closer connection exception: fewer than 183 days in the United States in the year, a tax home in Singapore for the whole year, a closer connection to Singapore than to the United States, a timely Form 8840, and no green-card application (e.g. Form I-485). If it applies, you are a nonresident alien taxed in the U.S. only on U.S.-source income and income connected with a U.S. business.
Year of assessment: Singapore taxes the previous year's income. Singapore assesses tax for a year of assessment (YA) on the income of the preceding calendar year and decides residence for that same calendar year: income and days of 2026 are YA 2027. U.S. residence is also decided by calendar year, so the periods match, but Singapore notices and certificates show a YA one year later. Singapore does not split the year into resident and non-resident periods: your status is set for the whole calendar year.
Working in Singapore while resident in the U.S.. Pay for work physically done in Singapore is Singapore-source income. As a non-resident of Singapore you pay 15% on it, or the resident rates if that gives more tax; employment of no more than 60 days in a year is exempt, except for company directors, public entertainers and professionals. With no treaty there is no 183-day exemption beyond that, even if a U.S. employer pays you. The United States taxes the same pay as part of your worldwide income and credits the Singapore tax.
Non-resident of Singapore: full domestic withholding rates. As a non-resident you pay Singapore tax only on Singapore-source income, partly through withholding by the payer: interest 15%, royalties 10%, rent of movable property 15%, non-resident directors' remuneration 24%, professionals 15% of gross income or 24% of net income, public entertainers 15% of gross income. With no U.S.–Singapore treaty these rates are not reduced; a U.S. citizen or resident can credit the Singapore tax in the United States.
Leaving Singapore: tax clearance (IR21). If you are not a Singapore citizen and are employed there, then when you cease employment, are posted abroad or leave Singapore for more than three months, your employer files Form IR21 with IRAS at least one month in advance and withholds all moneys due to you until IRAS determines the tax. This is also when IRAS reviews a provisional resident status: if your actual stay was under 183 days and the two- or three-year rules do not apply, you are taxed as a non-resident. IRAS does not require tax clearance in some cases — for example employment of no more than 60 days in the year, or annual earnings under SGD 21,000 — check IRAS's list.
No U.S.–Singapore social security (totalization) agreement. Singapore is not on SSA's list of U.S. social security agreements. U.S. Social Security and Medicare taxes (or self-employment tax) apply under U.S. law, no certificate of coverage can exempt you, and periods in the two countries are not added together.

How dual residence is resolved

There is no income tax treaty in force between the United States and this country.

Terms you will come across in Singapore

Income Tax Act 1947 (ITA): Singapore's income tax law; definition of a resident — s. 2(1)
IRAS: Inland Revenue Authority of Singapore, which also issues certificates of residence
Year of Assessment (YA): tax is assessed on the previous calendar year's income (YA 2027 — income of 2026)
Permanent Resident (PR): Singapore permanent resident: like a citizen, a tax resident if he or she normally lives in Singapore
IR21 (tax clearance): when a non-citizen employee leaves a job or Singapore, the employer files Form IR21 and withholds payments until IRAS assesses the tax
one-tier: system under which dividends of Singapore companies are not taxed in the shareholder's hands

Questions

Can I be a Singapore tax resident with fewer than 183 days?

Yes. A Singapore citizen or permanent resident who normally lives there and leaves only temporarily is resident whatever the days. For foreigners IRAS applies administrative rules: staying or working in Singapore continuously over three consecutive calendar years makes you resident for each of them, and employment spanning two calendar years with a continuous period of at least 183 days makes you resident for both (not for company directors, public entertainers and professionals). These are tax administration practice, not statutory rules.

Does Singapore tax my U.S. income?

Generally not: foreign income received in Singapore by a resident individual is exempt (s. 13(7A)), except income received through a partnership in Singapore, and foreign income that is not remitted is not taxed at all. The United States still taxes a U.S. citizen or resident on worldwide income, so the main overlap is Singapore-source income such as pay for work done in Singapore, relieved in the U.S. by the foreign tax credit (Form 1116) or the foreign earned income exclusion (Form 2555).

Is there a tax treaty between the U.S. and Singapore?

No comprehensive one — only a limited agreement in force since 28 July 1988 exempting income from the international operation of ships and aircraft. There is no tie-breaker, no treaty 183-day exemption and no reduced withholding rates. Singapore's own rule exempts pay for employment of no more than 60 days a year, except for company directors and public entertainers.

Sources

Legislation and official guidance

s. 2(1) Income Tax Act 1947 (definition of «resident in Singapore», para (a)) — An individual is resident in Singapore if, in the year preceding the year of assessment, he or she resides in Singapore except for such temporary absences as may be reasonable and not inconsistent with a claim to be resident; also resident is a person who in that year was physically present or exercised employment in Singapore (other than as a company director) for 183 days or more.
s. 2(1) ITA 1947 (definitions of «year of assessment» and «basis period»); IRAS — preceding-year basis of assessment — Tax is charged for a year of assessment (YA) on the income of the preceding calendar year: YA 2027 covers income from 1 January to 31 December 2026. Residence is determined for the same preceding calendar year, so the selected year 2026 is the basis year for YA 2027.
IRAS — «Working out my tax residency» (updated 12 May 2026) — A Singapore citizen or permanent resident who normally resides in Singapore, except for temporary absences, is a tax resident. A foreigner is resident for a year of assessment if, in the preceding calendar year, he or she stayed or worked in Singapore for at least 183 days, or stays or works in Singapore continuously for three consecutive years (then for all three years, even with fewer than 183 days in the first and third). A foreign employee whose employment spans two calendar years is resident for both years if the period of employment, together with the stay immediately before and after it, is a continuous period of at least 183 days (not for company directors, public entertainers and professionals). Days include weekends and public holidays, and temporary absences (leave abroad, business trips) connected with the employment in Singapore.
s. 13(7A) ITA 1947 — Exempt is income from sources outside Singapore received in Singapore: (a) by a non-resident individual; (b) from 1 January 2004 — by a resident individual, where the Comptroller is satisfied that the exemption is beneficial to him or her; the exemption does not cover such income received through a partnership in Singapore.
IRAS — rates for non-residents (updated 27 April 2026); s. 13(6)–(7) ITA 1947 — A non-resident pays tax only on income received in or derived from Singapore, without personal reliefs: employment income — 15% or the resident rates if that gives more tax; director's fees, consultants' fees, rental income, pensions and other income — 24%. Pay for employment in Singapore of no more than 60 days in a year is exempt (s. 13(6)), except directors' remuneration and income of public entertainers (s. 13(7)).
IRAS — Singapore–United States limited agreement on income from shipping and air transport (1988) — Reciprocal exemption of income from the international operation of ships and aircraft; concluded and in force on 28 July 1988, applying to taxable years from 1 January 1987. It has no residence tie-breaker for individuals.
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.
§ 7701(b)(3)(A); Treas. Reg. § 301.7701(b)-1(c) — Substantial presence test: at least 31 days in the current year and at least 183 days counting all current-year days, 1/3 of the days in the first preceding year and 1/6 of the days in the second preceding year. Fractions are not rounded.
§ 7701(b)(3)(B)–(C); Treas. Reg. §§ 301.7701(b)-2, -8 — Closer connection exception: fewer than 183 days in the current year, a tax home in a foreign country for the whole year, a closer connection to that country, and a timely Form 8840; not available if you applied for a green card (e.g. Form I-485).
IRS Publication 519, U.S. Tax Guide for Aliens — Official IRS guide for aliens: residence tests, exempt individuals, closer connection exception, dual-status years, dual-resident taxpayers.
Treas. Reg. § 301.7701(b)-1(b) — A lawful permanent resident (green-card holder) is a U.S. resident for the calendar year regardless of the number of days spent in the United States.
IRAS — types of payments and withholding tax rates (updated 18 November 2025) — Withholding on payments to non-residents: interest — 15%, royalties — 10% (with a reduced base for authors), rent of movable property — 15%, non-resident directors' remuneration — 24%, non-resident professionals — 15% of gross income or 24% of net income, public entertainers — 15% of gross income.
IRAS — tax clearance for non-Singapore citizen employees (Form IR21, updated 4 March 2026) — When an employee who is not a Singapore citizen ceases employment, is posted overseas or leaves Singapore for more than three months, the employer files Form IR21 with IRAS at least one month in advance and, from the time it becomes aware of this, withholds all moneys due to the employee until IRAS determines the tax.
SSA — U.S. international social security agreements (status)
IRAS — resident tax rates from YA 2024 (updated 27 April 2026) — Progressive rates on a resident's chargeable income: first SGD 20,000 — 0%, then 2%, 3.5%, 7%, 11.5%, 15%, 18%, 19%, 19.5%, 20%, 22% (SGD 320,001–500,000), 23% (SGD 500,001–1,000,000) and 24% above SGD 1,000,000.
IRAS — gains from the sale of property, shares and financial instruments (updated 27 February 2026); dividends (updated 27 February 2026) — Gains from selling property and shares are generally not taxed as capital gains unless the sale amounts to trading (frequent transactions, a profit-seeking motive). Dividends of Singapore companies under the one-tier system are not taxed; foreign dividends received in Singapore by a resident are generally not taxed either (except those received through a partnership in Singapore).

Updated 2026-11-10. 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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