$80K in Idaho Falls = $80,920 in Louisville
Your $80K salary in Idaho Falls (COL 87) has the same purchasing power as $80,920 in Louisville (COL 88). Louisville is more expensive — you'd need 1% more to maintain the same lifestyle.
Budget breakdown — $80K in both cities
What $80K actually buys you in each city after taxes and core expenses.
| Expense | Idaho Falls $80K | Louisville $80K (same salary) |
|---|---|---|
| Monthly take-home | $4,670 | $4,790 |
| 1BR rent | $1,100 | $1,300 |
| Groceries | $365 | $361 |
| Transport | $35 | $60 |
| Utilities | $142 | $162 |
| Internet | $65 | $60 |
| Left after essentials | $2,963/month | $2,847/month |
Frequently asked questions
What is $80K in Idaho Falls equivalent to in Louisville?
$80K in Idaho Falls (COL index 87) has the same purchasing power as $80,920 in Louisville (COL index 88). That's 1% more than your current salary.
If I move from Idaho Falls to Louisville keeping my $80K salary, will I be better off?
Not necessarily. Core expenses in Louisville are higher, so on the same $80K salary you'd have $116 less per month. You'd need to earn $80,920 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: $80K × (88 ÷ 87) = $80,920. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Idaho Falls to Louisville
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only