Singapore–Vietnam tax treaty · territorial base
Singapore’s differentiator is territorial tax — remitted foreign income is generally exempt — plus IR21 clearance and ESOP deemed exercise on exit. CPF follows status, not geography. Second Protocol PE and royalty updates are on file.
Visa → days → tax → labour
- TRC / stay sets how long you may remain.
- Days and habitual abode decide Vietnam tax residence (threshold 183 days).
- Working needs a permit or exemption — separate from tax.
- Relief between the states runs through the Singapore–Vietnam DTA (signed 1994-03-02; Second Protocol from 2013-01-11).
Treaty article caps on file
Primary: SSO Order 1994 · Second Protocol Order 2013.
| Article / topic | On file |
|---|---|
| Dividends — >50% capital or >US$10m | 5 % |
| Dividends — 25%–50% capital | 7 % |
| Dividends — other | 12.5 % |
| Interest | 10 % — Protocol MFN exists (third-state comparison rate not invented) |
| Royalties — IP / equipment / know-how | 5 % |
| Royalties — other (post-Protocol) | 10 % |
| Construction PE | 6 months |
| Services PE | 183 days |
| Art 14 independent-services stay limb | 183 days |
| Art 15 short-stay limb | 183 days |
| Art 18 pensions | Residence state only (yes) |
| Art 21 teachers / researchers | Up to 2 years |
| Art 24 credit SG ← VN tax | yes — amounts not invented |
| Art 24 credit VN ← SG tax | yes — amounts not invented |
| Art 4 dual-resident tie-breaker | permanent home → centre of vital interests → habitual abode → mutual agreement |
Art 23 Limitation of Relief was deleted by the Second Protocol (yes). Art 24 tax-sparing deemed-10% exists (yes); dollars refused (yes).
Dual residence — why day counts disagree
- Vietnam: 183-day / habitual-abode machine (tax residency).
- Singapore: SC/SPR “normally resides”, or foreigner 183-day limb.
- Dual domestic residence → DTA Art 4: permanent home → centre of vital interests → habitual abode → mutual agreement.
- Refused: picking treaty residence without permanent-home and vital-interests facts.
Singapore-side traps
On file (yes). These do not travel from the Australia page. Gates only — not dollar bills.
1. Territorial base (not worldwide)
Tax residents are taxed on Singapore-earned income (yes). Foreign-sourced income remitted into Singapore is generally exempt (yes). Foreign tax credit exists (yes) but only where the income is taxable in Singapore (yes) — so remitted foreign income that is exempt often never reaches FTC. Vietnam worldwide tax still applies if you are a Vietnam tax resident.
2. Non-resident employment rates
Non-resident employment: higher of flat 15 % or progressive rates (yes). Short-term employment ≤ 60 days days generally exempt (not directors / entertainers / professionals). IRAS straddling-employment concession may apply when employment spans residence and non-residence periods.
3. IR21 tax clearance
Non-citizen employees: Form IR21 (yes) when leaving Singapore for more than 3 months, among other triggers. Employer withholds monies due.
4. ESOP / ESOW deemed exercise
At clearance, foreigners are deemed to derive gains on unexercised / unvested / restricted plans (yes). Also covers SPR leaving permanently / overseas posting (yes). Employer may elect Tracking Option (yes). Gain maths refused.
5. CPF — status, not geography
CPF closes when you are no longer SC or SPR (yes). Mere move to Vietnam while remaining a citizen does not itself unlock CPF (yes).
6. Certificate of Residence
To claim DTA benefits abroad as a Singapore tax resident, apply for COR (yes).
What stays refused
Dollar foreign-tax credits and Art 24 tax-sparing amounts (yes), progressive Singapore brackets, CPF / SRS withdrawal maths, ESOP market-price bills, and Art 4 outcomes without permanent-home facts.
All cells on this page
- Singapore–Vietnam double tax agreement existsSSO Income Tax (Singapore — Vietnam) Order 1994 — Agreement signed Hanoi 2 March 1994yeschecked Aug 2026
- Singapore–Vietnam DTA signedSSO Order 1994 Schedule — signed at Hanoi on 2 March 19941994-03-02checked Aug 2026
- Second Protocol entry into forceIRAS newsroom — Second Protocol entered into force 11 January 2013; SSO Order 2013 S 9/20132013-01-11checked Aug 2026
- Dividend source cap — >50% capital or >US$10mSSO Order 1994 Art 10(2)(a) — >50% capital or >US$10 million5 %checked Aug 2026
- Dividend source cap — 25%–50% capitalSSO Order 1994 Art 10(2)(b) — between 25% and 50% of capital7 %checked Aug 2026
- Dividend source cap — other casesSSO Order 1994 Art 10(2)(c) — 12½% in all other cases12.5 %checked Aug 2026
- Interest source capSSO Order 1994 Art 11(2); Protocol Art V MFN if Vietnam gives lower rate elsewhere10 %checked Aug 2026
- Royalty source cap — IP / equipment / know-howSSO Order 1994 Art 12(2)(a) — patents, designs, equipment, know-how5 %checked Aug 2026
- Royalty source cap — other cases (post-Protocol)Second Protocol Art VI — replaces Art 12(2)(b) 15% with 10%10 %checked Aug 2026
- Construction / installation PE thresholdSecond Protocol Art II — construction/installation PE if lasts more than 6 months6 monthschecked Aug 2026
- Services PE thresholdSecond Protocol Art II — services PE if >183 days in any 12-month period183 dayschecked Aug 2026
- Dependent personal services short-stay limbSSO Order 1994 Art 15 — aggregate not exceeding 183 days in the calendar year (one limb)183 dayschecked Aug 2026
- Art 18 pensions taxable only in residence stateSSO Order 1994 Art 18 — pensions taxable only in residence state (subject to Art 19)yeschecked Aug 2026
- Singapore domestic tax traps are modelled on this sitenguon/SG_SIDE_TRAPS.md — IRAS residence/territorial + IR21 + CPF leave; gates onlyyeschecked Aug 2026
- Singapore 183-day tax-residence test exists (foreigners)IRAS Working out my tax residency — foreigner ≥183 days in previous calendar year is one residence limbyeschecked Aug 2026
- Foreigner Singapore tax-residence day thresholdIRAS Working out my tax residency — at least 183 days in the previous calendar year183 dayschecked Aug 2026
- SG tax residents: foreign-sourced income remitted to SG generally exemptIRAS Working out my tax residency — tax residents: foreign-sourced income brought into Singapore is tax-exempt (except received through partnerships in Singapore)yeschecked Aug 2026
- SG tax residents are taxed on Singapore-earned incomeIRAS Working out my tax residency — tax residents taxed on all income earned in Singaporeyeschecked Aug 2026
- Form IR21 tax clearance process exists for non-citizen employeesIRAS Tax Clearance for Foreign & SPR Employees (IR21) — employer files when non-citizen ceases employment / overseas posting / leave >3 monthsyeschecked Aug 2026
- IR21 leave-Singapore thresholdIRAS IR21 — leave Singapore for more than three months triggers employer tax-clearance duty (with other triggers)3 monthschecked Aug 2026
- CPF account must be closed when no longer Singapore Citizen or PRCPF Board — Closing your account when you leave Singapore / FAQ: account closed when no longer SC or SPR; transfer savings to bankyeschecked Aug 2026
- Mere move to Vietnam while remaining SC does not itself close CPFCPF Board leave pages key closure to loss of SC/SPR status — not to physical relocation alone while remaining a citizenyeschecked Aug 2026
- Art 4 individual dual-resident tie-breaker cascadeSSO Order 1994 Art 4(2) — no nationality step before MAP (unlike some OECD models)permanent home → centre of vital interests → habitual abode → mutual agreementchecked Aug 2026
- Dual SG–VN domestic residents use DTA Art 4SSO Order 1994 Art 4(2) — dual domestic residence resolved by treaty cascadeyeschecked Aug 2026
- Art 24 credit: Singapore ← Vietnam taxSSO Order 1994 Art 24(3)(a) — Singapore allows credit for Vietnamese tax paid (subject to SG domestic credit rules)yeschecked Aug 2026
- Art 24 credit: Vietnam ← Singapore taxSSO Order 1994 Art 24(2)(a) — Vietnam allows deduction equal to tax paid in Singaporeyeschecked Aug 2026
- Art 24 tax-sparing deemed-10% rule exists for listed incomeSSO Order 1994 Art 24(4) — for listed income types, tax deemed 10% of gross where actual tax paid < 10%yeschecked Aug 2026
- Art 24 tax-sparing dollar amounts deliberately not modelledArt 24(4) mechanism filed; machine refuses dollar sparing creditsyeschecked Aug 2026
- Art 23 Limitation of Relief deleted by Second ProtocolSecond Protocol Art IX — ARTICLE 23 (Limitation of Relief) deleted; subsequent articles not renumberedyeschecked Aug 2026
- Art 14 independent services stay limb (post-Protocol)Second Protocol Art VIII — independent personal services may be taxed if stay exceeds 183 days in any 12-month period (also fixed-base limb)183 dayschecked Aug 2026
- Art 21 teachers/researchers exemption max periodSSO Order 1994 Art 21 — teaching/research exemption up to two years from first visit2 yearschecked Aug 2026
- Singapore Certificate of Residence (COR) exists for DTA claimsIRAS Claiming exemptions under DTAs — COR certifies Singapore tax residence for claiming treaty benefits abroadyeschecked Aug 2026
- Singapore foreign tax credit mechanism existsIRAS Claiming foreign tax credit — residents may claim FTC when same income taxed abroad and taxable in Singaporeyeschecked Aug 2026
- FTC only where the income is taxable in SingaporeIRAS FTC conditions — income must be taxable in Singapore (pairs with territorial base: remitted foreign income often exempt → FTC may not engage)yeschecked Aug 2026
- ESOP/ESOW deemed-exercise rule exists at tax clearance for foreignersIRAS ESOP e-Tax Guide / IR21 — deemed exercise on unexercised/unvested ESOP/ESOW when foreign employee ceases SG employment (grants from 1 Jan 2003)yeschecked Aug 2026
- Deemed exercise also covers SPR leaving permanently / overseas postingIRAS How to Complete Form IR21 / e-Tax Guide — SPR leaving permanently or posted overseas also in deemed-exercise cohortyeschecked Aug 2026
- Employer Tracking Option exists as alternative to deemed exerciseIRAS IR21 / e-Tax Guide — employer may elect Tracking Option instead of deemed exerciseyeschecked Aug 2026
- Singapore Citizen/SPR ‘normally resides’ residence limb existsIRAS Working out my tax residency — SC/SPR who normally resides in Singapore except for temporary absences is a tax residentyeschecked Aug 2026
- Non-resident employment tax uses higher of 15% flat or progressive ratesIRAS Working out my tax residency — non-resident employment taxed at higher of flat 15% or progressive resident ratesyeschecked Aug 2026
- Non-resident employment flat-rate limbIRAS Working out my tax residency — non-resident employment income flat rate limb15 %checked Aug 2026
- Short-term employment exemption day ceilingIRAS Working out my tax residency — non-resident short-term employment ≤60 days generally exempt (not directors/entertainers/professionals)60 dayschecked Aug 2026
- Interest most-favoured-nation clause existsSingapore–Vietnam DTA Protocol Art V — MFN: if Vietnam grants a lower interest rate to a third state, that rate applies to Singaporeyeschecked Aug 2026
- Interest MFN comparison rate deliberately not inventedProtocol Art V mechanism filed; current third-state comparison rate deliberately not invented hereyeschecked Aug 2026
- IRAS straddling-employment concession existsIRAS — straddling-employment concession may apply when employment spans residence/non-residence periodsyeschecked Aug 2026
Common questions
- Is Singapore tax worldwide like Vietnam?
- No. Singapore residents are taxed on Singapore-earned income; remitted foreign income is generally exempt. That territorial base is the Singapore differentiator versus Vietnam’s worldwide resident tax.
- What is IR21?
- Form IR21 is Singapore tax clearance for non-citizen employees leaving Singapore (among other triggers). Employers withhold monies due. It is an employer-side exit gate, not a Vietnam rule.
- Is there a Singapore–Vietnam DTA?
- Yes. The 1994 agreement is in force; the Second Protocol updated PE/royalty limbs and deleted Limitation of Relief. Interest has an MFN clause — the comparison rate is not invented here.
- Does CPF stop when I move to Vietnam?
- CPF contribution status follows SC/SPR status, not geography. Moving to Vietnam does not by itself close CPF the way some people expect Super to work in Australia.
Cells cite primary sources with check months. Method · Sources · Disclosure. Not personalised tax advice.
Also filed: Australia · South Korea · China · Japan · United Kingdom · Canada · United States.