Can I Afford to Live in Koh Samui vs Boulder on $120K?
Here's how a $120K/year salary plays out in both cities after taxes, rent, and core living expenses — based on Q1 2026 data.
Monthly budget breakdown
| Expense | Koh Samui TH | Boulder CO |
|---|---|---|
| Monthly take-home (est.) | $7,155 | $6,715 |
| 1BR rent | $620 | $2,300 |
| Groceries (est.) | $380 | $414 |
| Transport (est.) | $150 | $80 |
| Utilities | $70 | $138 |
| Internet | $28 | $68 |
| Left after essentials | $5,907/month | $3,715/month |
Frequently asked questions
Is $120K a good salary in Koh Samui?
At $120K/year in Koh Samui, your estimated monthly take-home is $7,155. With 1BR rent around $620/month, rent takes up 9% of your take-home. That's considered very comfortable.
Is $120K a good salary in Boulder?
At $120K/year in Boulder, your estimated monthly take-home is $6,715. With 1BR rent around $2,300/month, rent takes up 34% of your take-home. That's considered manageable.
Which city is more affordable on a $120K salary?
Koh Samui leaves you with more money after core expenses — $5,907/month vs $3,715/month in Boulder.
Can I afford to live alone in Koh Samui on $120K?
Yes. At $120K in Koh Samui, rent takes 9% of your take-home, leaving $5,907/month after essentials. Most financial planners recommend keeping rent below 30%.
See the full cost-of-living comparison
Rent, groceries, taxes, transportation, and more — side by side.
Take-home estimates use simplified federal/state brackets and do not account for pre-tax deductions, 401(k), or local taxes. Data: Zillow, BLS, Numbeo · Q1 2026 · For general guidance only