Taiwan enacts same-sex marriage
On 17 May 2019 the Legislative Yuan passed the Act for Implementation of J.Y. Interpretation No. 748, making Taiwan the first in Asia to legalise same-sex marriage. Tsai’s government backed the statute after a 2017 Court clock and a 2018 referendum fight. In the causal graph this event strengthens Protection of Minority Rights, a driver that strengthens Having a say in government — an improving welfare path.
Read the full account
On 17 May 2019 the Legislative Yuan passed the Act for Implementation of J.Y. Interpretation No. 748, making Taiwan the first in Asia to legalise same-sex marriage. Tsai’s government backed the statute after a 2017 Court clock and a 2018 referendum fight.
Context
The Court had set a two-year clock. Referendums had gone against marriage. She did not sit as a justice. A statute is still a dated rights instrument.
2018 referendums are the neighbouring political-cost row.
The president of the Republic of China (Taiwan) is head of state under the Additional Articles. She does not write a PRC statute, a US NDAA, a TSMC board minute, or a 2026 Lai cabinet order. She left office on 20 May 2024; Lai Ching-te is president. A blackout is not a finding that every reactor was thereby safe. A Pelosi transit is not a PRC missile. Allegation of a stolen 2018 referendum is not stored as a completed steal. An indigenous apology is not a land-title gazette. A New Southbound brand is not an FTA by itself. A 2024 LY split is not a finding that the 2020 mandate was void.
Why it matters
The path is protection of minority rights: a completed marriage-equality statute is a documented civic-rights gain.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
Tsai Ing-wen
PersonDirect responsibility
responsibility level 0.7 · verified
The LY passed. The Court had clocked. Her government backed. Couples registered.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactTaiwan enacts same-sex marriage
- strengthensDriverProtection of Minority Rights
- strengthensIndicators (2)Having a say in government
impact weight 0.65 · Effect from 17 May 2019 · verified
A completed marriage-equality statute is a civic-rights gain for same-sex couples.
Strengthens · Relationship strength 0.29 (weight 0.65 × strength 0.45)
Observed
29.8% of population aged 16-65 years · 8.13 below the normal line (2023)
Worse than normalTwo readings: 30.2% of population aged 16-65 years (2021) and 29.8% of population aged 16-65 years (2023).
20212023 Above normal = better
Weakens · Relationship strength 0.29 (weight 0.65 × strength 0.45)
Observed
43.9 Score · 43.9 above the normal line (2024)
Worse than normal26 readings, 1996–2024: rose from 43 Score to 43.9 Score.
Normal is zero · any amount = worse
- FactTaiwan enacts same-sex marriage
- strengthensDriverSocial Cohesion
- strengthensIndicators (2)Having a say in government
impact weight 0.3 · Effect from 17 May 2019 · verified
Legal recognition can raise inclusion, with referendum-polarization as a leak stored on 2018.
Strengthens · Relationship strength 0.14 (weight 0.3 × strength 0.45)
Observed
29.8% of population aged 16-65 years · 8.13 below the normal line (2023)
Worse than normalTwo readings: 30.2% of population aged 16-65 years (2021) and 29.8% of population aged 16-65 years (2023).
20212023 Above normal = better
Weakens · Relationship strength 0.14 (weight 0.3 × strength 0.45)
Observed
43.9 Score · 43.9 above the normal line (2024)
Worse than normal26 readings, 1996–2024: rose from 43 Score to 43.9 Score.
Normal is zero · any amount = worse
Evidence
The sources behind this fact and its verification state.
- 1.Reuters — Taiwan parliament legalises same-sex marriageReuters · High credibility · verified
- 2.MOJ — Act for Implementation of J.Y. Interpretation No. 748, 17 May 2019Ministry of Justice Taiwan · High credibility · verified
What the sources establish
Ministry of Justice Taiwan carries the official instrument or communique. Reuters records the same dated act independently.
Established: a 17 May 2019 same-sex marriage statute, independently reported.
Not established: a unique later TFR coefficient, or that every referendum thereby vanished.
The Court had clocked. Her government backed. Couples registered.. A later repeal, court stay, or successor order would be a different Fact with a different date. That pair identifies Taiwan enacts same-sex marriage, not a later speech about Taiwan enacts same-sex marriage.
Co-authors and later implementers named in Context remain on the file. If a later repeal, stay, or successor instrument exists, it needs its own date and its own row. The contribution described on this Person row is limited to The LY passed. The Court had clocked. Her government backed. Couples registered. That limit is the alternative to treating office-holding as authorship of every later series.
Causal path
How this event connects to drivers and indicators in the graph.
- ActorTsai Ing-wen
- contributed toFactTaiwan enacts same-sex marriage
- strengthensDrivers (2)Protection of Minority Rights
- strengthensIndicatorHaving a say in government
Cite this page
Factrail. (2026). Taiwan enacts same-sex marriage. Factrail. https://factrail.ai/facts/tw-tsai-marriage-2019
https://factrail.ai/facts/tw-tsai-marriage-2019
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
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