Can I Afford to Live in San Diego vs Koh Samui 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 | San Diego CA | Koh Samui TH |
|---|---|---|
| Monthly take-home (est.) | $6,225 | $7,155 |
| 1BR rent | $2,600 | $620 |
| Groceries (est.) | $414 | $380 |
| Transport (est.) | $100 | $150 |
| Utilities | $130 | $70 |
| Internet | $65 | $28 |
| Left after essentials | $2,916/month | $5,907/month |
Frequently asked questions
Is $120K a good salary in San Diego?
At $120K/year in San Diego, your estimated monthly take-home is $6,225. With 1BR rent around $2,600/month, rent takes up 42% of your take-home. That's considered tight.
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.
Which city is more affordable on a $120K salary?
Koh Samui leaves you with more money after core expenses — $5,907/month vs $2,916/month in San Diego.
Can I afford to live alone in San Diego on $120K?
It's tight. Rent in San Diego would take 42% of your $120K take-home pay. You may need to find roommates or look at studios to stay within the 30% rule.
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