$100K in San Antonio = $96,552 in Birmingham
Your $100K salary in San Antonio (COL 87) has the same purchasing power as $96,552 in Birmingham (COL 84). Birmingham is cheaper — your money goes 3% further there.
Budget breakdown — $100K in both cities
What $100K actually buys you in each city after taxes and core expenses.
| Expense | San Antonio $100K | Birmingham $100K (same salary) |
|---|---|---|
| Monthly take-home | $6,321 | $5,904 |
| 1BR rent | $1,100 | $1,200 |
| Groceries | $353 | $357 |
| Transport | $48 | $40 |
| Utilities | $175 | $175 |
| Internet | $60 | $58 |
| Left after essentials | $4,585/month | $4,074/month |
Frequently asked questions
What is $100K in San Antonio equivalent to in Birmingham?
$100K in San Antonio (COL index 87) has the same purchasing power as $96,552 in Birmingham (COL index 84). That's 3% less than your current salary.
If I move from San Antonio to Birmingham keeping my $100K salary, will I be better off?
Yes. If you keep earning $100K after moving to Birmingham, you'd have $-511 more per month after core expenses — because Birmingham is cheaper than San Antonio.
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: $100K × (84 ÷ 87) = $96,552. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — San Antonio to Birmingham
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only