$40K in Boise = $31,238 in Mobile

Your $40K salary in Boise (COL 105) has the same purchasing power as $31,238 in Mobile (COL 82). Mobile is cheaper — your money goes 22% further there.

$40K in Boise, ID
$2,535/mo take-home
Rent: $1,600/mo (63% of take-home)
Difficult
$31,238/yr in Mobile, AL
$2,001/mo take-home
Rent: $1,100/mo (55% 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
Mobile
$40K (same salary)
Monthly take-home$2,535$2,562
1BR rent$1,600$1,100
Groceries$372$353
Transport$45$38
Utilities$145$172
Internet$60$58
Left after essentials$313/month$841/month
To match your Boise purchasing power in Mobile, you'd need to earn $31,238/year (22% less than $40K). At that salary, you'd have $280/mo left after essentials — vs $313/mo in Boise.

Frequently asked questions

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

$40K in Boise (COL index 105) has the same purchasing power as $31,238 in Mobile (COL index 82). That's 22% less than your current salary.

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

Yes. If you keep earning $40K after moving to Mobile, you'd have $528 more per month after core expenses — because Mobile 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 × (82 ÷ 105) = $31,238. This adjusts for differences in housing, food, transport, and general cost of living.

Other salary amounts — Boise to Mobile

$50K → $39,048$60K → $46,857$75K → $58,571$80K → $62,476$100K → $78,095$120K → $93,714$150K → $117,143
$40K in Mobile → BoiseMoving from Boise to MobileBoise vs Mobile — full comparisonCan I afford Boise vs Mobile on $40K?

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