$75K in Koh Samui = $130,500 in St. Louis
Your $75K salary in Koh Samui (COL 50) has the same purchasing power as $130,500 in St. Louis (COL 87). St. Louis is more expensive — you'd need 74% more to maintain the same lifestyle.
Budget breakdown — $75K in both cities
What $75K actually buys you in each city after taxes and core expenses.
| Expense | Koh Samui $75K | St. Louis $75K (same salary) |
|---|---|---|
| Monthly take-home | $4,741 | $4,447 |
| 1BR rent | $620 | $1,300 |
| Groceries | $380 | $369 |
| Transport | $150 | $75 |
| Utilities | $70 | $162 |
| Internet | $28 | $60 |
| Left after essentials | $3,493/month | $2,481/month |
Frequently asked questions
What is $75K in Koh Samui equivalent to in St. Louis?
$75K in Koh Samui (COL index 50) has the same purchasing power as $130,500 in St. Louis (COL index 87). That's 74% more than your current salary.
If I move from Koh Samui to St. Louis keeping my $75K salary, will I be better off?
Not necessarily. Core expenses in St. Louis are higher, so on the same $75K salary you'd have $1,012 less per month. You'd need to earn $130,500 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: $75K × (87 ÷ 50) = $130,500. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Koh Samui to St. Louis
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only