$40K in Columbia = $60,690 in Boulder
Your $40K salary in Columbia (COL 87) has the same purchasing power as $60,690 in Boulder (COL 132). Boulder is more expensive — you'd need 52% more to maintain the same lifestyle.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | Columbia $40K | Boulder $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,522 | $2,582 |
| 1BR rent | $1,250 | $2,300 |
| Groceries | $361 | $414 |
| Transport | $45 | $80 |
| Utilities | $152 | $138 |
| Internet | $60 | $68 |
| Left after essentials | $654/month | -$418/month |
Frequently asked questions
What is $40K in Columbia equivalent to in Boulder?
$40K in Columbia (COL index 87) has the same purchasing power as $60,690 in Boulder (COL index 132). That's 52% more than your current salary.
If I move from Columbia to Boulder keeping my $40K salary, will I be better off?
Not necessarily. Core expenses in Boulder are higher, so on the same $40K salary you'd have $1,072 less per month. You'd need to earn $60,690 to maintain the same standard of living.
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 × (132 ÷ 87) = $60,690. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Columbia to Boulder
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only