Desk 2 · two destinations

Thailand vs Portugal on a American passport

Verified 2026-08How facts work SourcesNationality is fixed. Cells are filed on each dest tax hub. Overlays are separate pair URLs.

Passport hub: From United States · home × land: US × Thailand · US × Portugal.

Filed cells

Tax, stay and earn lenses from dest hubs — not invented fees. Purpose framing:

Work · remote · retire — which rows matter

Work — earn gate + tax days. Overlay for treaty short-stay.
Remote — stay instrument + foreign-income rule. Overlay for home traps.
Retire — stay instrument + pension articles on the overlay. Spend-down compare lives on ThonRetire.

Lens	Thailand	Portugal
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.	183 days Source Autoridade Tributária English tax-residency rules page + CIRS Art. 16(1)(a) — resident if stayed in Portugal for more than 183 days (consecutive or interrupted) in any 12-month period beginning or ending in the tax year in question 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.	yes Source AT tax-residency rules — residents typically pay tax on all their income, whether from Portugal or abroad; non-residents only pay tax on Portugal-source income Checked Aug 2026 · Band low · 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.	48% Source CIRS Art. 68(1) (Lei 73-A/2025) — AT irs68 table: superior a €86,634; taxa normal 48,00% (ninth escalão; no taxa média listed) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Long-stay instrument (filed)	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.	7 days/year Source AIMA ARI Art. 90.º-A — the ARI holder must spend at least 7 days in Portugal in the first year and at least 14 days in each subsequent year (a light physical-presence rule, not a residence-for-tax rule) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Local earn gate (filed)	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.	2157 EUR/month Source AIMA Art. 90.º highly-qualified activity — subordinate hire needs an employer declaration of a contract paying at least 1.5× the national average gross annual salary (€2,157/month) or 3× the IAS; for shortage occupations in ISCO major groups 1 and 2 the floor is at least 1.2× the average gross salary (€1,725.60/month) or 2× the IAS (€1,018.52/month). Reference years: 2023 (average salary), 2024 (IAS) Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Treaty (US)	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 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.
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 US–Portugal 1994 Convention Art 16(2)(a) — ≤183 days in any 12-month period 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 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.
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 → centre of vital interests → habitual abode → competent authority Source US–PT Convention Art 4(2) (Treasury text; IRS Letter 15-0045) — permanent home → centre of vital interests (personal and economic relations) → habitual abode → competent-authority mutual agreement; no nationality rung. Protocol para 3(c) limits when a US citizen/green-card holder counts as a US treaty resident 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.	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.
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.	—
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 AT tax-residency rules — residents typically pay tax on all their income, whether from Portugal or abroad; non-residents only pay tax on Portugal-source income Checked Aug 2026 · Band low · 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 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.

Other pairs

Vietnam vs ThailandUS Thailand vs MalaysiaUS Vietnam vs PortugalUS Philippines vs IndonesiaUS Malaysia vs PortugalUS Thailand vs PortugalUS

Thailand vs Portugal on a American passport

Verified 2026-08How facts workSourcesNationality is fixed. Cells are filed on each dest tax hub. Overlays are separate pair URLs.

Filed cells

Tax, stay and earn lenses from dest hubs — not invented fees. Purpose framing:

Work · remote · retire — which rows matter

Work — earn gate + tax days. Overlay for treaty short-stay.
Remote — stay instrument + foreign-income rule. Overlay for home traps.
Retire — stay instrument + pension articles on the overlay. Spend-down compare lives on ThonRetire.

Lens	Thailand	Portugal
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.	183 days Source Autoridade Tributária English tax-residency rules page + CIRS Art. 16(1)(a) — resident if stayed in Portugal for more than 183 days (consecutive or interrupted) in any 12-month period beginning or ending in the tax year in question 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.	yes Source AT tax-residency rules — residents typically pay tax on all their income, whether from Portugal or abroad; non-residents only pay tax on Portugal-source income Checked Aug 2026 · Band low · 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.	48% Source CIRS Art. 68(1) (Lei 73-A/2025) — AT irs68 table: superior a €86,634; taxa normal 48,00% (ninth escalão; no taxa média listed) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Long-stay instrument (filed)	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.	7 days/year Source AIMA ARI Art. 90.º-A — the ARI holder must spend at least 7 days in Portugal in the first year and at least 14 days in each subsequent year (a light physical-presence rule, not a residence-for-tax rule) Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Local earn gate (filed)	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.	2157 EUR/month Source AIMA Art. 90.º highly-qualified activity — subordinate hire needs an employer declaration of a contract paying at least 1.5× the national average gross annual salary (€2,157/month) or 3× the IAS; for shortage occupations in ISCO major groups 1 and 2 the floor is at least 1.2× the average gross salary (€1,725.60/month) or 2× the IAS (€1,018.52/month). Reference years: 2023 (average salary), 2024 (IAS) Checked Aug 2026 · Band med · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Treaty (US)	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 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.
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 US–Portugal 1994 Convention Art 16(2)(a) — ≤183 days in any 12-month period 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 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.
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 → centre of vital interests → habitual abode → competent authority Source US–PT Convention Art 4(2) (Treasury text; IRS Letter 15-0045) — permanent home → centre of vital interests (personal and economic relations) → habitual abode → competent-authority mutual agreement; no nationality rung. Protocol para 3(c) limits when a US citizen/green-card holder counts as a US treaty resident 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.	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.
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.	—
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 AT tax-residency rules — residents typically pay tax on all their income, whether from Portugal or abroad; non-residents only pay tax on Portugal-source income Checked Aug 2026 · Band low · 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 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.