Koh Samui offers digital nomads solid infrastructure for living and working. This guide covers the four essentials: internet, SIM cards, banking and visa options.

Internet

Fibre internet is available in most tourist areas. Key providers: True Move H (best coverage across Chaweng, Lamai, Bophut), AIS Fibre (reliable alternative, slightly cheaper). Monthly home fibre plans: from 600 THB ($17+). Long-term villa and apartment rentals often include internet. 4G mobile is stable in tourist zones; signal weakens in hilly or remote areas. 5G is currently limited on the island.

SIM Cards

Buy at Samui Airport or any True/AIS/DTAC branch (passport required). True Move H Tourist SIM covers 30 days with 15–30 GB data from 299 THB — good for a first month. For longer stays, a standard monthly SIM with unlimited data runs from 500 THB per 30-day top-up.

Banking

Thai banks generally do not open accounts for tourists without a work permit or long-term visa. Practical options:

  • Kasikorn Bank (K-Bank) — opens accounts for foreigners with a Work Permit or Thailand Elite visa. The K Plus mobile app is among the best in Thailand.
  • Wise — most popular choice for nomads without a Thai bank account. Withdraw baht at ATMs with competitive rates; free withdrawal limit around 350,000 THB/month.
  • Revolut — works in Thailand, debit card available for cash withdrawals.

ATMs are everywhere. Thai banks charge from 220 THB per foreign card withdrawal — factor this into your budgeting.

Visa Options for Extended Stays

  • Visa Exemption — 30 days on arrival for most nationalities (EU, US, UK, Russia, etc.), extendable once for 30 more days at the Nathon immigration office (1,900 THB). For longer stays, a border run or multi-entry tourist visa is needed.
  • Thailand Elite Visa — paid long-term residency: 5 years from 600,000 THB ($17K), 10 years from 1,000,000 THB. Enables bank account opening. Popular among higher-budget nomads.
  • LTR Visa (Long Term Resident) — introduced 2022 for wealthy foreigners, retirees and highly skilled professionals. Requires passive income of $80K+/year or $250K+ in assets. 10-year visa with work rights.

Cost of Living

Samui is more expensive than Bangkok or Chiang Mai but affordable by Western standards. A realistic monthly budget including rent, food and coworking: $1,200–$2,000. Private hospitals (Bangkok Hospital Samui, Samui International Hospital) provide good care. Samui works best as a base for those already familiar with Thailand — it rewards those who know how to navigate the island lifestyle.

Tax Considerations

Thailand considers those staying 180+ days per year as tax residents, with an obligation to declare Thai-source income. Foreign-source income is generally not taxed if not remitted in the same year. Most nomads have not faced issues, but the rules are evolving. A consultation with a Thai tax professional (2,000–5,000 THB) is worthwhile for stays exceeding six months. In summary: Samui is a practical long-term base when paired with the right visa and a clear-eyed understanding of local rules.