$40K in Seattle = $28,000 in Boise

Your $40K salary in Seattle (COL 150) has the same purchasing power as $28,000 in Boise (COL 105). Boise is cheaper — your money goes 30% further there.

$40K in Seattle, WA
$2,728/mo take-home
Rent: $2,400/mo (88% of take-home)
Difficult
$28,000/yr in Boise, ID
$1,775/mo take-home
Rent: $1,600/mo (90% of take-home)
Difficult

Budget breakdown — $40K in both cities

What $40K actually buys you in each city after taxes and core expenses.

Expense
Seattle
$40K
Boise
$40K (same salary)
Monthly take-home$2,728$2,535
1BR rent$2,400$1,600
Groceries$410$372
Transport$100$45
Utilities$120$145
Internet$65$60
Left after essentials-$367/month$313/month
To match your Seattle purchasing power in Boise, you'd need to earn $28,000/year (30% less than $40K). At that salary, you'd have $-447/mo left after essentials — vs $-367/mo in Seattle.

Frequently asked questions

What is $40K in Seattle equivalent to in Boise?

$40K in Seattle (COL index 150) has the same purchasing power as $28,000 in Boise (COL index 105). That's 30% less than your current salary.

If I move from Seattle to Boise keeping my $40K salary, will I be better off?

Yes. If you keep earning $40K after moving to Boise, you'd have $680 more per month after core expenses — because Boise is cheaper than Seattle.

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 × (105 ÷ 150) = $28,000. This adjusts for differences in housing, food, transport, and general cost of living.

Other salary amounts — Seattle to Boise

$50K → $35,000$60K → $42,000$75K → $52,500$80K → $56,000$100K → $70,000$120K → $84,000$150K → $105,000
$40K in Boise → SeattleMoving from Seattle to BoiseSeattle vs Boise — full comparisonCan I afford Seattle vs Boise on $40K?

Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only