Phnom Penh vs Koh Samui for Retirees (2026)
Scroll down for retirement income tax breakdown, healthcare estimates, and FAQ.
Your move simulator
Slide to match your household — estimates combine take-home, rent, and groceries.
Estimated annual swing
+$3,240/yr
Favoring Phnom Penh for this income & household (illustrative).
With the extra $270/mo, you could pay down a $15,000 card balance in ~56 months and still keep ~$32/mo for dining out.
Complete the Picture
While you’re comparing — don’t leave money on the table.
High-yield savings
Park ~$3,240/yr savings at 4–5%+ APY
Even $270/mo extra earns meaningfully at 4–5% APY vs near-zero in checking.
Home + auto bundle
New state — compare rates before you sign
Moving to Phnom Penh resets your insurance profile. Bundling home + auto often saves 15–25%.
Supplemental health
Compare Medicare supplement options for your new state
Health coverage varies by state. Review Medigap plans available in your new zip before moving.
Full retirement cost breakdown
| Metric | Phnom Penh Phnom Penh | Koh Samui Surat Thani Province | Your impact |
|---|---|---|---|
| 1BR rent / month | $350Better | $620 | $3,240/yr saves in Phnom |
| Median home price | — | — | — |
| State income tax | NoneBetter | None | — |
| Sales tax (combined) | 10% | 7%Better | — |
| Monthly utilities | $60Better | $70 | $120/yr saves in Phnom |
| Groceries index (US = 100) | — | — | — |
| Est. healthcare / month | $150Better | $250 | $1,200/yr saves in Phnom |
| Walk score (0–100) | 52 / 100Better | 35 / 100 | — |
| Overall COL index (100 = US avg) | 30Better | 50 | — |
Your biggest money opportunities based on this comparison.
Healthcare savings
Phnom Penh saves ~$100/mo on healthcare
Compare Medicare supplement and insurance plans to cover what Medicare doesn't pay.
More to invest
Phnom Penh stretches your retirement savings ~40% further
Lower COL means more of your nest egg stays invested. Compare brokerage and IRA accounts.
Complete the Picture
While you’re comparing — don’t leave money on the table.
Mortgages
See what you can afford in Koh Samui
Compare rates from top lenders before your move — pre-approval is free and won't affect your score.
Home & Auto Insurance
Bundle before you move — save 15–25%
New state means new rates. Lock in Koh Samui homeowners + auto quotes before your move date.
Moving Rewards Card
Turn closing costs & moving expenses into cash back
Average family spends $6,200 on a move. These cards pay 2–4% back + 0% intro APR on purchases.
Frequently asked questions
Which city is better for retirement — Phnom Penh or Koh Samui?
Based on home prices, taxes on retirement income, walkability, and overall cost of living, Phnom Penh scores better for retirees. Phnom Penh is approximately 40% cheaper overall. The best choice still depends on climate, healthcare access, and proximity to family.
Is retirement income taxed in Phnom Penh or Koh Samui?
Neither Phnom Penh 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 Phnom Penh 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 $150 in Phnom Penh and $250 in Koh Samui. That's a difference of ~$100/month, or ~$1,200/year. Actual costs vary based on your Medicare plan, supplements, and health needs.
Can I afford to retire in Phnom Penh on a $50,000 annual income?
On a $50,000/year ($4,167/month) retirement income in Phnom Penh, rent alone would consume approximately 8% of your budget (1BR rent ~$350/mo) and healthcare another ~4%. That leaves roughly 88% (~$3,667/mo) for groceries, transportation, and other expenses. This is generally considered manageable.
Which city is more walkable for retirees?
Phnom Penh 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. Phnom Penh offers more independence without a car, which also reduces transportation costs.
$50K/year in Phnom Penh has the same purchasing power as $83K/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