Koh Samui wins overall by ~74% (COL index)
Cost of living: Columbia vs Koh Samui (2026)
A $75,000 salary in Columbia buys roughly what $43,103 does in Koh Samui (COL-adjusted). Your real trade-offs are taxes, rent, and day-to-day prices — we break them down and personalize below.
Your move simulator
Slide to match your household — estimates combine take-home, rent, and groceries.
Adjust income → set household → see a meaningful swing to unlock all three.
Estimated annual swing
−$11,976/yr
Favoring Koh Samui for this income & household (illustrative).
With the extra $998/mo, you could pay down a $15,000 card balance in ~16 months and still keep ~$120/mo for dining out.
Studio rent/mo
1BR rent/mo
2BR rent/mo
Median home price
Groceries index (100 = US avg)
Budget meal (1 person)
Mid-range dinner (2)
Monthly transit pass/mo
Gas price/gal
Car insurance/mo
Monthly utilities bundle/mo
Internet/mo
Median household income/yr
State income tax%
Sales tax (combined)%
Movie ticket
Gym membership/mo
Beer at restaurant
Overall COL index (100 = US avg)
Walk score / 100
| Category | Columbia South Carolina | Koh Samui Surat Thani Province | Who wins |
|---|---|---|---|
| 🏠 HousingQ1 2026 | |||
| Studio rent/mo | $1,000 | $450Wins | Koh Samui wins −$550/mo |
| 1BR rent/mo | $1,250 | $620Wins | Koh Samui wins −$630/mo |
| 2BR rent/mo | $1,650 | $950Wins | Koh Samui wins −$700/mo |
| Median home price | $260K | — | — |
| 🛒 Food & GroceriesQ1 2026 | |||
| Groceries index (100 = US avg) | 95 | — | — |
| Budget meal (1 person) | $12 | $5Wins | Koh Samui wins −$7/mo |
| Mid-range dinner (2) | $50 | $20Wins | Koh Samui wins −$30/mo |
| 🚌 TransportationQ1 2026 | |||
| Monthly transit pass/mo | $45 | — | — |
| Gas price/gal | $3.10 | — | — |
| Car insurance/mo | $145 | — | — |
| ⚡ UtilitiesQ1 2026 | |||
| Monthly utilities bundle/mo | $152 | $70Wins | Koh Samui wins −$82/mo |
| Internet/mo | $60 | $28Wins | Koh Samui wins −$32/mo |
| 💰 Income & TaxesQ1 2026 | |||
| Median household income/yr | $52K | — | — |
| State income tax% | 6.2% | 0.0%Wins | Koh Samui wins -6.2 pp |
| Sales tax (combined)% | 7.5% | 7.0%Better | Koh Samui wins -0.5 pp |
| 🎬 LeisureQ1 2026 | |||
| Movie ticket | $14.00 | — | — |
| Gym membership/mo | $35Better | $35 | — |
| Beer at restaurant | $5.50 | — | — |
| 📊 OverviewQ1 2026 | |||
| Overall COL index (100 = US avg) | 87 | 50Wins | Koh Samui wins -37 |
| Walk score / 100 | 30 | 35Wins | Koh Samui wins +5 more/yr |
While you're comparing — don't leave money on the table.
Tax-smart rewards
Turn ~$4,656/yr tax differences into cash back
Koh Samui fits your move math — cash-back cards stack on groceries, gas, and dining you're already doing.
Home + auto bundle
New state — new insurance rates
Bundling often saves hundreds/yr. Compare before you sign a lease in Koh Samui.
High-yield savings
Park ~$7,560/yr rent savings at 4–5%+ APY
Don't let relocation cash sit at 0% — put it to work until closing day.
More ways to compare this move
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Open the full interactive tool to add up to 5 cities, drop in your salary, and see rent burden.
Open full interactive toolWhile you're comparing — don't leave money on the table.
If cash is tight
Knock down high-interest debt first
A move has upfront costs — a balance transfer or personal loan can lower APR while you settle in.
If you're saving big
Invest the surplus on autopilot
Brokerages and robo-advisors help you dollar-cost average into the market with your new slack.
Frequently asked questions
Is Columbia cheaper than Koh Samui?
No. Koh Samui is 74% cheaper than Columbia based on overall cost of living indices (50 vs 87, where 100 = US average).
What is the average rent in Columbia vs Koh Samui?
As of Q1 2026, the median 1-bedroom rent in Columbia is $1,250/month and in Koh Samui is $620/month. Columbia is more expensive by 102%.
How much do I need to earn in Koh Samui to match a $75,000 salary in Columbia?
To maintain a similar lifestyle, you would need approximately $43,103/year in Koh Samui to match a $75,000 salary in Columbia. This estimate is based on overall cost of living indices and does not account for individual spending patterns.
Which city has lower taxes — Columbia or Koh Samui?
Koh Samui has the lower state income tax rate at 0% vs 6.2%. Koh Samui has no state income tax at all, which can save thousands of dollars per year depending on your income. Note that sales tax and local taxes also vary — see the full breakdown in the table above.
Is it worth moving from Columbia to Koh Samui?
It depends on your priorities. Koh Samui offers lower overall costs and tax advantages, but both cities have different job markets, weather, and lifestyle trade-offs. Use the comparison table above to evaluate rent, groceries, transportation, and income potential side by side based on your specific budget.
Data sourced from Zillow, BLS, Numbeo, Tax Foundation, and US Census ACS · Updated Q1 2026 · For general guidance only
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Salary equivalent: Columbia ↔ Koh Samui
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