Desk 3 · two passports × one land · verified 2026-08

US vs AU in Thailand

2 lenses differ on this land. Highlighted rows are where filed cells disagree — never invented scores.

Verified 2026-08Method SourcesSame land. Different home law. Cells come from each nationality × destination overlay.

United States

American passport

The US taxes citizens worldwide; a saving clause often keeps the US return even when a treaty exists.

US → Thailand tax From United States

Australia

Australian passport

Australia keeps Super, CGT event I1 and Age Pension rules on the Australian folder — the DTA sits between folders.

AU → Thailand tax From Australia

Side by side

Overlays: US → Thailand · AU → Thailand · Home × land · Two dests.

Lens	United States	Australia
Treaty	yes Source US–Thailand Income Tax Convention, signed Bangkok 26 Nov 1996; Art 30 general effective date 1 Jan 1998 (irs.gov/pub/irs-trty/thailand.pdf) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source [1989] ATS 36; Australian Treasury income tax treaties list — Thailand status In force Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Employment short-stay	183 days Source US–TH DTA Art 16 Dependent Personal Services (IRS thailand.pdf); relief already flagged in us_th_ftc_relief_art25 — short-stay day ceiling Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	183 Source AU–TH DTA Art 15(2)(a) — ≤183 days in the tax year / year of income of the other State Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Relief (double tax)	ordinary tax credit Source US–TH DTA Art 16 Dependent Personal Services (IRS thailand.pdf); relief already flagged in us_th_ftc_relief_art25 — Article 25 ordinary credit Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source AU–TH DTA Art 24 — Methods of elimination; Australia and Thailand each allow a capped credit Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Art 4	Cascade permanent home → centre of vital interests → habitual abode → nationality Source US–Thailand Convention Art 4(2) — dual-residence tie-breaker cascade Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	Cascade permanent home → habitual abode → closer personal and economic relations Source AU–TH Agreement Art 4(3) (rd.go.th/english/859.html); citizenship/nationality is a factor in the third limb under Art 4(4) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
SSA / totalization	no Source SSA — U.S. International Social Security (Totalization) Agreements list does not include Thailand Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source DSS — Australia international social security agreements list (32 partners) does not include Thailand Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Treaty pensions	yes Source US–Thailand Convention Art 20(2) — social security/public pensions taxable only in the paying State; exception to the saving clause Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source AU–TH Agreement Art 18(1) — subject to Art 19, pensions and annuities taxable only in the residence State Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Foreign-income hinge	yes Source Thailand Revenue Code §41 para 2 (bringing foreign assessable income into Thailand) Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source AU–TH Agreement Art 3(4) — where the other State taxes only remitted income, treaty relief applies only to the remitted portion Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Home-side traps	yes Source nguon/US_SIDE_TRAPS.md — FBAR / Form 8938 / FEIE gates; PFIC & expatriation dollars not modelled Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source au_vn_tax / AU-side traps — residency tests, CGT deemed disposal, superannuation reuse across destinations Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.
Home beachhead cell	Citizenship-based tax: yes Source US domestic rule (citizenship-based taxation) — independent of any Vietnam treaty Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.	CGT event I1 (home side): yes Source ITAA 1997 s 104-160; ATO QC66059 How changing residency affects CGT Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.

Shared land law · ThailandSame for both passports

Tax-residence day test	180 days Source Thailand Revenue Code §41 para 3 (rd.go.th/english/37749.html) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Foreign / worldwide income	yes Source Thailand Revenue Code §41 para 2 (bringing foreign assessable income into Thailand) Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Top personal rate	35% Source RD Guide to PIT Return 2024 (ภ.ง.ด.91) — official PDF rate table; matches thailand.go.th RD briefing (Revenue Code Amendment Act No. 44 B.E. 2560 schedule from tax year 2017). Note: rd.go.th/english/6045 still shows the pre-amendment 4m/35% top band and is not used for these cells. Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Long-stay instrument	180 days Source Royal Thai Embassy Budapest DTV page — stay up to 180 days per entry Checked Aug 2026 · Band high · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Local earn gate	yes Source Royal Thai Embassy Budapest DTV page — tourist-class DTV; no Thai work permit; no work for Thai entities/clients Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.

StayVisa and residence EarnWork lawfully TaxThailand tax hub

Other passport pairs on Thailand

AU vs UKThailand AU vs USThailand US vs CAThailand JP vs KRThailand SG vs AUThailand UK vs CAThailand

Cross-check

Cross-check US × Thailand

Home × land · US × Thailand Two dests · US From United States Thailand hub US → Thailand tax

US across six lands

Land	Treaty	Relief	SSA	Open
Vietnam	No treaty in force	domestic foreign tax credit only (Form 1116) — no in-force treaty Source IRS A–Z treaty list — US–Vietnam signed not in force; nguon/US_VN_DTA_STATUS.md Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source SSA International Programs — Status of Totalization Agreements / POMS GN 01701.005 country table — Vietnam absent from agreements in force Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	US → Vietnam
ThailandHere	yes Source US–Thailand Income Tax Convention, signed Bangkok 26 Nov 1996; Art 30 general effective date 1 Jan 1998 (irs.gov/pub/irs-trty/thailand.pdf) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source US–TH DTA Art 16 Dependent Personal Services (IRS thailand.pdf); relief already flagged in us_th_ftc_relief_art25 — Article 25 ordinary credit Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source SSA — U.S. International Social Security (Totalization) Agreements list does not include Thailand Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	US → Thailand
Indonesia	yes Source US–Indonesia Income Tax Convention signed Jakarta 11 July 1988; general effective date under Art 30: 1 January 1990 (irs.gov/pub/irs-trty/indo.pdf) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source US–Indonesia DTA Art 23 — foreign tax credit method (cell us_id_ftc_relief_art23 already filed) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source SSA — U.S. International Social Security (Totalization) Agreements list does not include Indonesia Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	US → Indonesia
Philippines	yes Source US–Philippines Income Tax Convention, signed Manila 1 Oct 1976; entered into force 16 Oct 1982 (irs.gov/pub/irs-trty/philip.pdf) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary foreign tax credit Source US–Philippines Convention Art 23 — Relief from Double Taxation (US credits PH tax; PH credits US tax); saving-clause exception under Art 6(4) — IRS philip.pdf Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source SSA — U.S. International Social Security (Totalization) Agreements list does not include the Philippines Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	US → Philippines
Malaysia	No treaty in force	domestic foreign tax credit only (Form 1116) — no treaty Source IRS Pub 901 / A–Z treaty list — no US–Malaysia income tax treaty; nguon/MY_SOURCES.md Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source SSA — U.S. International Social Security (Totalization) Agreements list does not include Malaysia Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	US → Malaysia
Portugal	yes Source US Treasury Convention text (signed Washington 6 September 1994) + Portugal OECD MLI consolidated list — US–Portugal income tax convention, entry into force 18 December 1995, generally effective from 1 January 1996 Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary foreign tax credit Source US–Portugal 1994 Convention Art 25 — Relief from Double Taxation (US credit), behind the Art 1(4) saving clause Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source SSA — the U.S.–Portugal Agreement on Social Security (signed Lisbon 30 March 1988, TIAS 12121) entered into force 1 August 1989; it eliminates dual social-security coverage and can total periods for benefits. Unlike US–Malaysia, this coordination exists Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	US → Portugal

Eight passports on Thailand 8 overlays

Passport	Treaty	Relief	SSA	Open
AU	yes Source [1989] ATS 36; Australian Treasury income tax treaties list — Thailand status In force Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source AU–TH DTA Art 24 — Methods of elimination; Australia and Thailand each allow a capped credit Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source DSS — Australia international social security agreements list (32 partners) does not include Thailand Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	AU → Thailand
SG	yes Source MOF Singapore — revised Singapore–Thailand DTA enters into force on 15 February 2016 (signed 11 June 2015) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source Singapore–Thailand Agreement Art 22 — each State credits tax paid in the other, subject to domestic limits Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source CPF Board / Singapore domestic CPF regime — no Singapore–Thailand social security / CPF totalisation agreement published; same gate as sg_vn_social_security_agreement_in_force (nguon/SG_SIDE_TRAPS.md pattern) Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	SG → Thailand
KR	yes Source Thai RD DTA list (rd.go.th/english/766.html) — Korea appears in Thailand's in-force DTA network; full English convention text published by the RD and Art 4 read from it Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source KR–TH Convention Art 5 Elimination of Double Taxation (Thai RD English HTML Art 1–5) — ordinary foreign-tax credit Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source NPS social security agreements overview — Thailand is not among Korea’s published SSA partners (MOU lump-sum paths elsewhere do not equal an SSA) Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	KR → Thailand
CN	yes Source Thai RD DTA list (rd.go.th/english/766.html) — China appears in Thailand's in-force DTA network; full English convention text published by the RD and Art 4 read from it Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source CN–TH DTA Art 23 Elimination of Double Taxation (Thai RD English HTML Art 21–25) — ordinary credit Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source MOHRSS / published China bilateral social security partner list (13 countries) does not include Thailand — same gate as cn_vn_social_security_agreement_in_force Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	CN → Thailand
JP	yes Source Thai RD intro japan — signed 7 April 1990; instruments exchanged 1 August 1990; effect in Thailand from 1 Jan 1991 Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source Japan–Thailand Convention Art 21 — each State credits tax paid in the other, subject to treaty limits Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source Japan Pension Service — Status of Agreements in Force (24 partners) does not include Thailand Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	JP → Thailand
UK	yes Source GOV.UK Thailand tax treaties — double taxation convention entered into force on 20 November 1981 Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source UK–Thailand Convention Art 23 — UK credits Thai tax; Thailand credits UK tax, subject to domestic limits Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source GOV.UK Reciprocal agreements + NI38 country lists do not include Thailand as a UK social security agreement partner Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	UK → Thailand
CA	yes Source Thai RD intro canada — Convention signed 11 April 1984; instruments exchanged 16 July 1985 Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source Canada–Thailand Convention Art 22 — Canada credits Thai tax; Thailand credits Canadian tax, subject to domestic limits Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source CRA countries-with-agreement table (Open Government CSV July 2024) does not list Thailand Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	CA → Thailand
USHere	yes Source US–Thailand Income Tax Convention, signed Bangkok 26 Nov 1996; Art 30 general effective date 1 Jan 1998 (irs.gov/pub/irs-trty/thailand.pdf) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source US–TH DTA Art 16 Dependent Personal Services (IRS thailand.pdf); relief already flagged in us_th_ftc_relief_art25 — Article 25 ordinary credit Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source SSA — U.S. International Social Security (Totalization) Agreements list does not include Thailand Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	US → Thailand

Side by side

Lens	United States	Australia
Treaty	yes Source US–Thailand Income Tax Convention, signed Bangkok 26 Nov 1996; Art 30 general effective date 1 Jan 1998 (irs.gov/pub/irs-trty/thailand.pdf) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source [1989] ATS 36; Australian Treasury income tax treaties list — Thailand status In force Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Employment short-stay	183 days Source US–TH DTA Art 16 Dependent Personal Services (IRS thailand.pdf); relief already flagged in us_th_ftc_relief_art25 — short-stay day ceiling Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	183 Source AU–TH DTA Art 15(2)(a) — ≤183 days in the tax year / year of income of the other State Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Relief (double tax)	ordinary tax credit Source US–TH DTA Art 16 Dependent Personal Services (IRS thailand.pdf); relief already flagged in us_th_ftc_relief_art25 — Article 25 ordinary credit Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	ordinary tax credit Source AU–TH DTA Art 24 — Methods of elimination; Australia and Thailand each allow a capped credit Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Art 4	Cascade permanent home → centre of vital interests → habitual abode → nationality Source US–Thailand Convention Art 4(2) — dual-residence tie-breaker cascade Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	Cascade permanent home → habitual abode → closer personal and economic relations Source AU–TH Agreement Art 4(3) (rd.go.th/english/859.html); citizenship/nationality is a factor in the third limb under Art 4(4) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
SSA / totalization	no Source SSA — U.S. International Social Security (Totalization) Agreements list does not include Thailand Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	no Source DSS — Australia international social security agreements list (32 partners) does not include Thailand Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Treaty pensions	yes Source US–Thailand Convention Art 20(2) — social security/public pensions taxable only in the paying State; exception to the saving clause Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source AU–TH Agreement Art 18(1) — subject to Art 19, pensions and annuities taxable only in the residence State Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Foreign-income hinge	yes Source Thailand Revenue Code §41 para 2 (bringing foreign assessable income into Thailand) Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source AU–TH Agreement Art 3(4) — where the other State taxes only remitted income, treaty relief applies only to the remitted portion Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Home-side traps	yes Source nguon/US_SIDE_TRAPS.md — FBAR / Form 8938 / FEIE gates; PFIC & expatriation dollars not modelled Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source au_vn_tax / AU-side traps — residency tests, CGT deemed disposal, superannuation reuse across destinations Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.
Home beachhead cell	Citizenship-based tax: yes Source US domestic rule (citizenship-based taxation) — independent of any Vietnam treaty Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.	CGT event I1 (home side): yes Source ITAA 1997 s 104-160; ATO QC66059 How changing residency affects CGT Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.

Tax-residence day test

180 days

Source Thailand Revenue Code §41 para 3 (rd.go.th/english/37749.html)

Checked Aug 2026 · Band low · Status fresh

Open primary URL