$100K in Phnom Penh = $166,667 in Koh Samui
Your $100K salary in Phnom Penh (COL 30) has the same purchasing power as $166,667 in Koh Samui (COL 50). Koh Samui is more expensive — you'd need 67% more to maintain the same lifestyle.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | Phnom Penh $100K | Koh Samui $100K (same salary) |
|---|---|---|
| Monthly take-home | $6,321 | $6,321 |
| 1BR rent | $350 | $620 |
| Groceries | $380 | $380 |
| Transport | $150 | $150 |
| Utilities | $60 | $70 |
| Internet | $40 | $28 |
| Left after essentials | $5,341/month | $5,073/month |
Frequently asked questions
What is $100K in Phnom Penh equivalent to in Koh Samui?
$100K in Phnom Penh (COL index 30) has the same purchasing power as $166,667 in Koh Samui (COL index 50). That's 67% more than your current salary.
If I move from Phnom Penh to Koh Samui keeping my $100K salary, will I be better off?
Not necessarily. Core expenses in Koh Samui are higher, so on the same $100K salary you'd have $268 less per month. You'd need to earn $166,667 to maintain the same standard of living.
How is the salary equivalent calculated?
The equivalent salary is calculated by multiplying your current salary by the ratio of the two cities' overall cost of living indices: $100K × (50 ÷ 30) = $166,667. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Phnom Penh to Koh Samui
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only