Desk 2 · two destinations

Thailand vs Portugal on a British 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 Kingdom · home × land: UK × Thailand · UK × 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 (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.	yes Source GOV.UK 'Portugal: tax treaties' + HMRC DT15600 — the 2025 UK–Portugal Double Taxation Convention (SI 2025 No. 1300), signed in London 15 September 2025, entered into force 29 December 2025; effective in the UK from 1 Jan 2026 (WHT), 1 Apr 2026 (CT), 6 Apr 2026 (IT/CGT), and in Portugal from 1 Jan 2026 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 UK–Thailand Convention Art 16(2)(a) — not exceeding in the aggregate 183 days in the fiscal year concerned Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	183 Source UK–Portugal 2025 DTC Art 14(2)(a) — ≤183 days in any twelve-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 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.	ordinary tax credit Source UK–Portugal 2025 DTC Art 21 — Elimination of Double Taxation, UK credit for Portuguese tax 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 → mutual agreement Source UK–Thailand Convention 1981 Art 4(2), GOV.UK text 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 → nationality → mutual agreement Source UK–Portugal 2025 DTC Art 4(2) — dual-resident cascade Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
SSA / totalization	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.	yes Source GOV.UK NI38 — Portugal is an EU social security agreement country for the UK Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Treaty pensions	yes Source UK–Thailand Convention 1981 — no dedicated pensions article for private/SIPP income; GOV.UK consolidated text 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 Stack with Thailand Revenue Code §41 remittance basis (/thailand/tax) — treaty relief is pair-specific; do not invent Art numbers without reading the convention text 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 UK-side traps / uk_vn_tax cells — TNR CGT, FIG, SRT reuse across destinations Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source UK domestic rules reuse across destinations (uk_vn_tax / uk_side_traps): Statutory Residence Test, temporary non-residence CGT, remittance→FIG shift from 6 Apr 2025, State Pension uprating geography — the Portugal DTA does not delete them Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.

Other pairs

Vietnam vs ThailandUK Thailand vs MalaysiaUK Vietnam vs PortugalUK Philippines vs IndonesiaUK Malaysia vs PortugalUK Thailand vs PortugalUK

Thailand vs Portugal on a British 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 (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.	yes Source GOV.UK 'Portugal: tax treaties' + HMRC DT15600 — the 2025 UK–Portugal Double Taxation Convention (SI 2025 No. 1300), signed in London 15 September 2025, entered into force 29 December 2025; effective in the UK from 1 Jan 2026 (WHT), 1 Apr 2026 (CT), 6 Apr 2026 (IT/CGT), and in Portugal from 1 Jan 2026 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 UK–Thailand Convention Art 16(2)(a) — not exceeding in the aggregate 183 days in the fiscal year concerned Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.	183 Source UK–Portugal 2025 DTC Art 14(2)(a) — ≤183 days in any twelve-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 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.	ordinary tax credit Source UK–Portugal 2025 DTC Art 21 — Elimination of Double Taxation, UK credit for Portuguese tax 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 → mutual agreement Source UK–Thailand Convention 1981 Art 4(2), GOV.UK text 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 → nationality → mutual agreement Source UK–Portugal 2025 DTC Art 4(2) — dual-resident cascade Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
SSA / totalization	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.	yes Source GOV.UK NI38 — Portugal is an EU social security agreement country for the UK Checked Aug 2026 · Band low · Status fresh Open primary URL Method: figures past 2× SLA hide. See /method · /status · /changelog.
Treaty pensions	yes Source UK–Thailand Convention 1981 — no dedicated pensions article for private/SIPP income; GOV.UK consolidated text 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 Stack with Thailand Revenue Code §41 remittance basis (/thailand/tax) — treaty relief is pair-specific; do not invent Art numbers without reading the convention text 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 UK-side traps / uk_vn_tax cells — TNR CGT, FIG, SRT reuse across destinations Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.	yes Source UK domestic rules reuse across destinations (uk_vn_tax / uk_side_traps): Statutory Residence Test, temporary non-residence CGT, remittance→FIG shift from 6 Apr 2025, State Pension uprating geography — the Portugal DTA does not delete them Checked Aug 2026 · Band low · Status fresh Method: figures past 2× SLA hide. See /method · /status · /changelog.