$40K in Buffalo = $38,667 in San Antonio
Your $40K salary in Buffalo (COL 90) has the same purchasing power as $38,667 in San Antonio (COL 87). San Antonio is cheaper — your money goes 3% further there.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | Buffalo $40K | San Antonio $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,498 | $2,728 |
| 1BR rent | $1,250 | $1,100 |
| Groceries | $384 | $353 |
| Transport | $72 | $48 |
| Utilities | $185 | $175 |
| Internet | $65 | $60 |
| Left after essentials | $542/month | $992/month |
Frequently asked questions
What is $40K in Buffalo equivalent to in San Antonio?
$40K in Buffalo (COL index 90) has the same purchasing power as $38,667 in San Antonio (COL index 87). That's 3% less than your current salary.
If I move from Buffalo to San Antonio keeping my $40K salary, will I be better off?
Yes. If you keep earning $40K after moving to San Antonio, you'd have $450 more per month after core expenses — because San Antonio is cheaper than Buffalo.
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 × (87 ÷ 90) = $38,667. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Buffalo to San Antonio
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only