$120K in Boise = $171,429 in Seattle
Your $120K salary in Boise (COL 105) has the same purchasing power as $171,429 in Seattle (COL 150). Seattle is more expensive — you'd need 43% more to maintain the same lifestyle.
Budget breakdown — $120K in both cities
What $120K actually buys you in each city after taxes and core expenses.
| Expense | Boise $120K | Seattle $120K (same salary) |
|---|---|---|
| Monthly take-home | $6,575 | $7,155 |
| 1BR rent | $1,600 | $2,400 |
| Groceries | $372 | $410 |
| Transport | $45 | $100 |
| Utilities | $145 | $120 |
| Internet | $60 | $65 |
| Left after essentials | $4,353/month | $4,060/month |
Frequently asked questions
What is $120K in Boise equivalent to in Seattle?
$120K in Boise (COL index 105) has the same purchasing power as $171,429 in Seattle (COL index 150). That's 43% more than your current salary.
If I move from Boise to Seattle keeping my $120K salary, will I be better off?
Not necessarily. Core expenses in Seattle are higher, so on the same $120K salary you'd have $293 less per month. You'd need to earn $171,429 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: $120K × (150 ÷ 105) = $171,429. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Boise to Seattle
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only