$40K in Green Bay = $39,070 in Birmingham
Your $40K salary in Green Bay (COL 86) has the same purchasing power as $39,070 in Birmingham (COL 84). Birmingham is cheaper — your money goes 2% further there.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | Green Bay $40K | Birmingham $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,472 | $2,562 |
| 1BR rent | $1,250 | $1,200 |
| Groceries | $365 | $357 |
| Transport | $48 | $40 |
| Utilities | $158 | $175 |
| Internet | $60 | $58 |
| Left after essentials | $591/month | $732/month |
Frequently asked questions
What is $40K in Green Bay equivalent to in Birmingham?
$40K in Green Bay (COL index 86) has the same purchasing power as $39,070 in Birmingham (COL index 84). That's 2% less than your current salary.
If I move from Green Bay to Birmingham keeping my $40K salary, will I be better off?
Yes. If you keep earning $40K after moving to Birmingham, you'd have $141 more per month after core expenses — because Birmingham is cheaper than Green Bay.
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 ÷ 86) = $39,070. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Green Bay to Birmingham
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only