$75K in Idaho Falls = $69,828 in Montgomery
Your $75K salary in Idaho Falls (COL 87) has the same purchasing power as $69,828 in Montgomery (COL 81). Montgomery is cheaper — your money goes 7% further there.
Budget breakdown — $75K in both cities
What $75K actually buys you in each city after taxes and core expenses.
| Expense | Idaho Falls $75K | Montgomery $75K (same salary) |
|---|---|---|
| Monthly take-home | $4,378 | $4,428 |
| 1BR rent | $1,100 | $1,050 |
| Groceries | $365 | $353 |
| Transport | $35 | $38 |
| Utilities | $142 | $170 |
| Internet | $65 | $58 |
| Left after essentials | $2,671/month | $2,759/month |
Frequently asked questions
What is $75K in Idaho Falls equivalent to in Montgomery?
$75K in Idaho Falls (COL index 87) has the same purchasing power as $69,828 in Montgomery (COL index 81). That's 7% less than your current salary.
If I move from Idaho Falls to Montgomery keeping my $75K salary, will I be better off?
Yes. If you keep earning $75K after moving to Montgomery, you'd have $88 more per month after core expenses — because Montgomery 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: $75K × (81 ÷ 87) = $69,828. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Idaho Falls to Montgomery
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only