$40K in Louisville = $38,182 in Birmingham
Your $40K salary in Louisville (COL 88) has the same purchasing power as $38,182 in Birmingham (COL 84). Birmingham is cheaper — your money goes 5% further there.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | Louisville $40K | Birmingham $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,595 | $2,562 |
| 1BR rent | $1,300 | $1,200 |
| Groceries | $361 | $357 |
| Transport | $60 | $40 |
| Utilities | $162 | $175 |
| Internet | $60 | $58 |
| Left after essentials | $652/month | $732/month |
Frequently asked questions
What is $40K in Louisville equivalent to in Birmingham?
$40K in Louisville (COL index 88) has the same purchasing power as $38,182 in Birmingham (COL index 84). That's 5% less than your current salary.
If I move from Louisville to Birmingham keeping my $40K salary, will I be better off?
Yes. If you keep earning $40K after moving to Birmingham, you'd have $80 more per month after core expenses — because Birmingham is cheaper than Louisville.
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: $40K × (84 ÷ 88) = $38,182. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Louisville to Birmingham
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only