$100K in Koh Samui = $74,000 in Hanoi
Your $100K salary in Koh Samui (COL 50) has the same purchasing power as $74,000 in Hanoi (COL 37). Hanoi is cheaper — your money goes 26% further there.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | Koh Samui $100K | Hanoi $100K (same salary) |
|---|---|---|
| Monthly take-home | $6,321 | $6,321 |
| 1BR rent | $620 | $450 |
| Groceries | $380 | $380 |
| Transport | $150 | $150 |
| Utilities | $70 | $50 |
| Internet | $28 | $15 |
| Left after essentials | $5,073/month | $5,276/month |
Frequently asked questions
What is $100K in Koh Samui equivalent to in Hanoi?
$100K in Koh Samui (COL index 50) has the same purchasing power as $74,000 in Hanoi (COL index 37). That's 26% less than your current salary.
If I move from Koh Samui to Hanoi keeping my $100K salary, will I be better off?
Yes. If you keep earning $100K after moving to Hanoi, you'd have $203 more per month after core expenses — because Hanoi is cheaper than Koh Samui.
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 × (37 ÷ 50) = $74,000. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Koh Samui to Hanoi
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only