$80K in Idaho Falls = $50,759 in Prague
Your $80K salary in Idaho Falls (COL 87) has the same purchasing power as $50,759 in Prague (COL 55). Prague is cheaper — your money goes 37% further there.
Budget breakdown — $80K in both cities
What $80K actually buys you in each city after taxes and core expenses.
| Expense | Idaho Falls $80K | Prague $80K (same salary) |
|---|---|---|
| Monthly take-home | $4,670 | $4,057 |
| 1BR rent | $1,100 | $800 |
| Groceries | $365 | $380 |
| Transport | $35 | $150 |
| Utilities | $142 | $90 |
| Internet | $65 | $25 |
| Left after essentials | $2,963/month | $2,612/month |
Frequently asked questions
What is $80K in Idaho Falls equivalent to in Prague?
$80K in Idaho Falls (COL index 87) has the same purchasing power as $50,759 in Prague (COL index 55). That's 37% less than your current salary.
If I move from Idaho Falls to Prague keeping my $80K salary, will I be better off?
Yes. If you keep earning $80K after moving to Prague, you'd have $-351 more per month after core expenses — because Prague is cheaper than Idaho Falls.
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 × (55 ÷ 87) = $50,759. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Idaho Falls to Prague
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only