Moving to Thailand as a Brit: The Complete Expat Guide
From Bangkok's vibrant city life to Chiang Mai's laid-back culture, Thailand is home to a thriving British expat community.
before
- Get Non-Immigrant B from Thai Embassy London
- Complete HMRC Statutory Residence Test
- Set up voluntary NI contributions
- Get international health insurance
on_arrival
- Register with British Embassy
during
- 90-day address reporting
Thailand hosts an estimated 50,000+ British expats, making it one of the largest UK communities in Asia. The cost of living is 70-80% lower than the UK, private healthcare is world-class, and the lifestyle is hard to beat. This guide covers the Non-Immigrant B work visa, UK tax implications including the Statutory Residence Test, NHS entitlements abroad, and practical advice for British expats in 2026.
Visa & requirements
- Valid UK passport (6+ months)
- Employment letter from Thai employer
- Degree certificate and CV
- Work permit post-arrival
British nationals need a Non-Immigrant B visa from the Royal Thai Embassy in London. The employer handles the work permit application. Since 2025, permits are digital via the Thai Digital ID app. LTR visa available for high earners (£63,000+/year).
Expatriation budget
- Suburban apartment (£250–£400)
- Local food
- BTS/MRT
- Basic insurance
- Central Bangkok condo (£550–£950)
- Mixed dining
- International insurance
- Entertainment
- Villa/penthouse
- International school
- Car with driver
- Premium healthcare
Monthly budget for expats
Bangkok: £1,000–2,100/month. Chiang Mai: £700–1,300/month. Islands (Phuket, Samui): £850–1,700/month. Local health insurance: £250–700/year. The GBP/THB rate gives excellent purchasing power.
Internet & connectivity
Internet and connectivity
Thailand has excellent internet infrastructure. Fiber in cities (100–500 Mbps, $15–30/month). 4G/5G nationwide. Home fiber: 500–1,000 THB/month. Faster and cheaper than many UK providers.
Average speed: 150 Mbps
Taxation & obligations
The UK-Thailand tax treaty prevents double taxation. You must pass the Statutory Residence Test (SRT) to leave UK tax residency. Thailand income is taxed 0-35%. Foreign income remitted to Thailand is taxable since 2024. Voluntary NI contributions maintain state pension eligibility. NHS access is lost after 6 months abroad—international insurance is essential.
Steps to settle in Thailand
Before departure
- Obtain Non-Immigrant visa (O-A, B, or DTV)
- Legalise documents (criminal record, diplomas)
- Get compliant health insurance (3M THB for O-A)
- Notify HMRC of departure
- Medical certificate
Settling in
- Open local bank account (Bangkok Bank, Kasikorn)
- Obtain Work Permit if employed locally
- Sign long-term lease
- Register with British Embassy
- Get Thai Tax ID (TIN)
Daily life
- Renew visa before expiry
- 90-day report (TM47)
- Address change notification within 24h
- Annual tax return if local income
- International → Thai driving licence
Advantages & challenges
Advantages
- 70-80% lower cost of living
- Excellent private healthcare
- Direct flights London-Bangkok
- Large British community
- Modern infrastructure
- Rich culture and cuisine
Challenges
- Work visa employer-dependent
- Thai language difficult
- Year-round heat
- Air pollution Dec-Mar
- Loss of NHS access
Yes, after 6 months abroad. International health insurance is essential.
Yes, make voluntary Class 3 NI contributions. Your pension is payable in Thailand but frozen at the rate when you leave (no annual increases).
Bangkok for international schools and services. Chiang Mai for a quieter lifestyle at lower cost.