$40K in San Jose = $18,836 in Billings
Your $40K salary in San Jose (COL 189) has the same purchasing power as $18,836 in Billings (COL 89). Billings is cheaper — your money goes 53% further there.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | San Jose $40K | Billings $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,418 | $2,502 |
| 1BR rent | $3,000 | $1,200 |
| Groceries | $437 | $369 |
| Transport | $100 | $42 |
| Utilities | $150 | $148 |
| Internet | $70 | $68 |
| Left after essentials | -$1,339/month | $675/month |
Frequently asked questions
What is $40K in San Jose equivalent to in Billings?
$40K in San Jose (COL index 189) has the same purchasing power as $18,836 in Billings (COL index 89). That's 53% less than your current salary.
If I move from San Jose to Billings keeping my $40K salary, will I be better off?
Yes. If you keep earning $40K after moving to Billings, you'd have $2,014 more per month after core expenses — because Billings is cheaper than San Jose.
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 × (89 ÷ 189) = $18,836. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — San Jose to Billings
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only