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Dual Citizenship Thailand × Singapore
Quick Answer
Not allowed — Constitution Art. 134 · Citizenship Act · adults acquiring foreign nationality must renounce Singapore.
Traps to watch
- ⚠️ National Service: males 18–21 owe 2 years — renounce pre-NS = banned + arrest on return
- ⚠️ Sons born Thailand to Singaporean fathers: still owe NS until formal renunciation
- ⚠️ Dual-heritage must choose before age 22 (males: 21 if avoiding NS)
- ⚠️ CPF accessible at 55 even after renunciation — outflow of funds complicated
Taxation
Territorial + progressive 0–24% · foreign-sourced income not taxed
Military
2 years mandatory for males 18–21 + annual reservist till age 40/50
Renunciation
SGD 35 · ICA e-Service · 3–6 months · NS must be completed first (males)
Typical clients
Thai-Singaporean dual-heritage, PRs approaching citizenship, entrepreneurs with SG companies
Other countries
Consult: 083-249-4999 · LINE @NYC168 · contact@ilc.ltd
Consultation THB 8,500 · Full-service THB 55,000–185,000






