Phuket vs Koh Samui for Retirees (2026)
Scroll down for retirement income tax breakdown, healthcare estimates, and FAQ.
Full retirement cost breakdown
| Metric | Phuket Phuket Province | Koh Samui Surat Thani Province |
|---|---|---|
| 1BR rent / month | $700 | $620Better |
| Median home price | — | — |
| State income tax | NoneBetter | None |
| Sales tax (combined) | 7%Better | 7% |
| Monthly utilities | $80 | $70Better |
| Groceries index (US = 100) | — | — |
| Est. healthcare / month | $260 | $250Better |
| Walk score (0–100) | 52 / 100Better | 35 / 100 |
| Overall COL index (100 = US avg) | 52 | 50Better |
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Frequently asked questions
Which city is better for retirement — Phuket or Koh Samui?
Phuket and Koh Samui are closely matched for retirees. Housing costs, tax burden, and overall affordability are similar. Your specific priorities — climate, walkability, family proximity — should guide the decision.
Is retirement income taxed in Phuket or Koh Samui?
Neither Phuket nor Koh Samui has a state income tax, which is excellent for retirees relying on Social Security, pensions, or 401(k) withdrawals. Your retirement income is only subject to federal taxes.
What is the estimated monthly healthcare cost in Phuket vs Koh Samui?
Based on national average retiree healthcare spending (~$500/month) scaled by each city's cost-of-living index, estimated monthly healthcare costs are approximately $260 in Phuket and $250 in Koh Samui. That's a difference of ~$10/month, or ~$120/year. Actual costs vary based on your Medicare plan, supplements, and health needs.
Can I afford to retire in Phuket on a $50,000 annual income?
On a $50,000/year ($4,167/month) retirement income in Phuket, rent alone would consume approximately 17% of your budget (1BR rent ~$700/mo) and healthcare another ~6%. That leaves roughly 77% (~$3,208/mo) for groceries, transportation, and other expenses. This is generally considered manageable.
Which city is more walkable for retirees?
Phuket has a higher walk score (52 vs 35 out of 100). Walkability is increasingly important for retirees who want to reduce car dependence — a score above 70 means most daily errands can be done on foot. Phuket offers more independence without a car, which also reduces transportation costs.
$50K/year in Phuket has the same purchasing power as $48K/year in Koh Samui
Healthcare estimates based on national avg retiree spending (~$500/mo) scaled by COL index · State income tax rates from Tax Foundation · Data: Zillow, BLS, Numbeo · Q1 2026