Seattle vs Koh Samui for Retirees (2026)
Scroll down for retirement income tax breakdown, healthcare estimates, and FAQ.
Full retirement cost breakdown
| Metric | Seattle Washington | Koh Samui Surat Thani Province |
|---|---|---|
| 1BR rent / month | $2,400 | $620Better |
| Median home price | $750K | — |
| State income tax | NoneBetter | None |
| Sales tax (combined) | 10.3% | 7%Better |
| Monthly utilities | $120 | $70Better |
| Groceries index (US = 100) | 108 | — |
| Est. healthcare / month | $750 | $250Better |
| Walk score (0–100) | 73 / 100Better | 35 / 100 |
| Overall COL index (100 = US avg) | 150 | 50Better |
Your biggest money opportunities based on this comparison.
Healthcare savings
Koh Samui saves ~$500/mo on healthcare
Compare Medicare supplement and insurance plans to cover what Medicare doesn't pay.
More to invest
Koh Samui stretches your retirement savings ~67% further
Lower COL means more of your nest egg stays invested. Compare brokerage and IRA accounts.
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 — Seattle or Koh Samui?
Seattle 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 Seattle or Koh Samui?
Neither Seattle 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 Seattle 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 $750 in Seattle and $250 in Koh Samui. That's a difference of ~$500/month, or ~$6,000/year. Actual costs vary based on your Medicare plan, supplements, and health needs.
Can I afford to retire in Seattle on a $50,000 annual income?
On a $50,000/year ($4,167/month) retirement income in Seattle, rent alone would consume approximately 58% of your budget (1BR rent ~$2,400/mo) and healthcare another ~18%. That leaves roughly 24% (~$1,000/mo) for groceries, transportation, and other expenses. This is tight — a studio apartment or lower-cost neighborhood would help.
Which city is more walkable for retirees?
Seattle has a higher walk score (73 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. Seattle offers more independence without a car, which also reduces transportation costs.
$50K/year in Seattle has the same purchasing power as $17K/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