$40K in Springfield = $35,918 in Sioux Falls
Your $40K salary in Springfield (COL 98) has the same purchasing power as $35,918 in Sioux Falls (COL 88). Sioux Falls is cheaper — your money goes 10% further there.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | Springfield $40K | Sioux Falls $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,562 | $2,728 |
| 1BR rent | $1,450 | $1,250 |
| Groceries | $391 | $365 |
| Transport | $72 | $42 |
| Utilities | $185 | $155 |
| Internet | $65 | $60 |
| Left after essentials | $399/month | $856/month |
Frequently asked questions
What is $40K in Springfield equivalent to in Sioux Falls?
$40K in Springfield (COL index 98) has the same purchasing power as $35,918 in Sioux Falls (COL index 88). That's 10% less than your current salary.
If I move from Springfield to Sioux Falls keeping my $40K salary, will I be better off?
Yes. If you keep earning $40K after moving to Sioux Falls, you'd have $457 more per month after core expenses — because Sioux Falls is cheaper than Springfield.
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 × (88 ÷ 98) = $35,918. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Springfield to Sioux Falls
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only