$40K in Austin = $31,803 in Charleston
Your $40K salary in Austin (COL 122) has the same purchasing power as $31,803 in Charleston (COL 97). Charleston is cheaper — your money goes 20% further there.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | Austin $40K | Charleston $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,728 | $2,522 |
| 1BR rent | $1,800 | $1,900 |
| Groceries | $372 | $376 |
| Transport | $50 | $55 |
| Utilities | $170 | $162 |
| Internet | $65 | $63 |
| Left after essentials | $271/month | -$34/month |
Frequently asked questions
What is $40K in Austin equivalent to in Charleston?
$40K in Austin (COL index 122) has the same purchasing power as $31,803 in Charleston (COL index 97). That's 20% less than your current salary.
If I move from Austin to Charleston keeping my $40K salary, will I be better off?
Yes. If you keep earning $40K after moving to Charleston, you'd have $-305 more per month after core expenses — because Charleston is cheaper than Austin.
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 × (97 ÷ 122) = $31,803. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Austin to Charleston
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only