Moving from Boston to Koh Samui (2026)
Koh Samui has a COL index of 50 vs 162 for Boston (100 = US average). You'd pay about 69% less for the same lifestyle.
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Key differences
Salary needed in Koh Samui to match your Boston lifestyle
Based on the 69% cost of living decrease between the two cities.
| Your salary in Boston | Equivalent in Koh Samui |
|---|---|
| $40K | $12,346 |
| $50K | $15,432 |
| $60K | $18,519 |
| $75K | $23,148 |
| $80K | $24,691 |
| $100K | $30,864 |
| $120K | $37,037 |
| $150K | $46,296 |
Adjust your salary
Monthly budget at $75K — Boston vs Koh Samui
| Expense | Boston | Koh Samui |
|---|---|---|
| Monthly take-home | $4,428 | $4,741 |
| 1BR rent | $3,000 | $620 |
| Groceries | $418 | $380 |
| Transport | $90 | $150 |
| Utilities | $185 | $70 |
| Internet | $70 | $28 |
| Left after essentials | $665 | $3,493 |
30-Year Wealth Builder
If you invest your monthly savings of $2,515 in a low-cost index fund (7% avg return), you'd accumulate an extra:
over 30 years compared to staying in Boston — that's the real price of a city.
Frequently asked questions
Is Koh Samui cheaper than Boston?
Yes. Koh Samui has a cost of living index of 50 vs 162 for Boston (100 = US average). That's about 69% cheaper.
How much will I save moving from Boston to Koh Samui?
On a $75K salary, moving from Boston to Koh Samui saves roughly $2,693/month on core expenses. That's ~$32,316/year.
What salary do I need in Koh Samui to match my Boston lifestyle?
To maintain the same purchasing power as $75,000 in Boston, you'd need roughly $23,148/year in Koh Samui. This is based on the overall COL index difference.
Estimates based on Q1 2026 COL index and market data. Budget uses simplified federal/state tax rates. Zillow · BLS · Numbeo · For general guidance only