$40K in Boise = $32,000 in Erie

Your $40K salary in Boise (COL 105) has the same purchasing power as $32,000 in Erie (COL 84). Erie is cheaper — your money goes 20% further there.

$40K in Boise, ID
$2,535/mo take-home
Rent: $1,600/mo (63% of take-home)
Difficult
$32,000/yr in Erie, PA
$2,100/mo take-home
Rent: $1,100/mo (52% of take-home)
Difficult

Budget breakdown — $40K in both cities

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

Expense
Boise
$40K
Erie
$40K (same salary)
Monthly take-home$2,535$2,625
1BR rent$1,600$1,100
Groceries$372$365
Transport$45$60
Utilities$145$168
Internet$60$62
Left after essentials$313/month$870/month
To match your Boise purchasing power in Erie, you'd need to earn $32,000/year (20% less than $40K). At that salary, you'd have $345/mo left after essentials — vs $313/mo in Boise.

Frequently asked questions

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

$40K in Boise (COL index 105) has the same purchasing power as $32,000 in Erie (COL index 84). That's 20% less than your current salary.

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

Yes. If you keep earning $40K after moving to Erie, you'd have $557 more per month after core expenses — because Erie is cheaper than Boise.

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 × (84 ÷ 105) = $32,000. This adjusts for differences in housing, food, transport, and general cost of living.

Other salary amounts — Boise to Erie

$50K → $40,000$60K → $48,000$75K → $60,000$80K → $64,000$100K → $80,000$120K → $96,000$150K → $120,000
$40K in Erie → BoiseMoving from Boise to ErieBoise vs Erie — full comparisonCan I afford Boise vs Erie on $40K?

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