$80K in Flagstaff = $39,216 in Koh Samui
Your $80K salary in Flagstaff (COL 102) has the same purchasing power as $39,216 in Koh Samui (COL 50). Koh Samui is cheaper — your money goes 51% further there.
Budget breakdown — $80K in both cities
What $80K actually buys you in each city after taxes and core expenses.
| Expense | Flagstaff $80K | Koh Samui $80K (same salary) |
|---|---|---|
| Monthly take-home | $4,890 | $5,057 |
| 1BR rent | $1,650 | $620 |
| Groceries | $384 | $380 |
| Transport | $45 | $150 |
| Utilities | $195 | $70 |
| Internet | $65 | $28 |
| Left after essentials | $2,551/month | $3,809/month |
Frequently asked questions
What is $80K in Flagstaff equivalent to in Koh Samui?
$80K in Flagstaff (COL index 102) has the same purchasing power as $39,216 in Koh Samui (COL index 50). That's 51% less than your current salary.
If I move from Flagstaff to Koh Samui keeping my $80K salary, will I be better off?
Yes. If you keep earning $80K after moving to Koh Samui, you'd have $1,258 more per month after core expenses — because Koh Samui is cheaper than Flagstaff.
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: $80K × (50 ÷ 102) = $39,216. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Flagstaff 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