Koh Samui vs Billings for First-Time Homebuyers (2026)
Scroll down for down payment requirements, savings timelines, and FAQ.
Full first-time buyer cost breakdown
| Metric | Koh Samui Surat Thani Province | Billings Montana |
|---|---|---|
| Median home price | — | $320K |
| Price-to-income ratio | — | 5.3× |
| Down payment (20%) | — | $64,000 |
| Months to save down payment | — | 13 mo |
| Est. monthly mortgage (7%, 30yr) | — | $1,703 |
| Monthly utilities | $70Better | $148 |
| State income tax | NoneBetter | 6.8% |
| Sales tax (combined) | 7% | 0%Better |
| Overall COL index (100 = US avg) | 50Better | 89 |
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Frequently asked questions
Is Koh Samui or Billings better for first-time homebuyers?
Based on home prices, price-to-income ratios, taxes, and overall affordability, Koh Samui scores better for first-time homebuyers. Koh Samui is approximately 44% cheaper overall. The best choice depends on your career, savings timeline, and long-term plans.
What is the down payment needed to buy in Koh Samui vs Billings?
Down payment data is not available for one or both cities.
What would my mortgage be in Koh Samui vs Billings?
Mortgage estimate data is not available for one or both cities.
How long would it take to save for a down payment in Koh Samui?
Down payment savings timeline data is not available for one or both cities.
Which city has lower property and income taxes for homeowners?
Koh Samui (Surat Thani Province) has no state income tax vs Billings's 6.8% rate. Property taxes vary significantly by neighborhood and assessed value — check local county rates when evaluating specific homes.
$75K in Koh Samui has the same purchasing power as $134K in Billings
Mortgage estimate assumes 20% down payment at 7% fixed rate, 30-year term. Actual rates vary. Down payment savings timeline assumes 15% of gross income saved monthly. Data: Zillow, BLS, Tax Foundation · Q1 2026