$40K in Boise = $27,619 in Seoul

Your $40K salary in Boise (COL 105) has the same purchasing power as $27,619 in Seoul (COL 73). Seoul is cheaper — your money goes 31% further there.

$40K in Boise, ID
$2,535/mo take-home
Rent: $1,600/mo (63% of take-home)
Difficult
$27,619/yr in Seoul, KR
$1,539/mo take-home
Rent: $900/mo (58% 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
Seoul
$40K (same salary)
Monthly take-home$2,535$2,228
1BR rent$1,600$900
Groceries$372$380
Transport$45$150
Utilities$145$80
Internet$60$25
Left after essentials$313/month$693/month
To match your Boise purchasing power in Seoul, you'd need to earn $27,619/year (31% less than $40K). At that salary, you'd have $4/mo left after essentials — vs $313/mo in Boise.

Frequently asked questions

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

$40K in Boise (COL index 105) has the same purchasing power as $27,619 in Seoul (COL index 73). That's 31% less than your current salary.

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

Yes. If you keep earning $40K after moving to Seoul, you'd have $380 more per month after core expenses — because Seoul 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 × (73 ÷ 105) = $27,619. This adjusts for differences in housing, food, transport, and general cost of living.

Other salary amounts — Boise to Seoul

$50K → $34,524$60K → $41,429$75K → $51,786$80K → $55,238$100K → $69,048$120K → $82,857$150K → $103,571
$40K in Seoul → BoiseMoving from Boise to SeoulBoise vs Seoul — full comparisonCan I afford Boise vs Seoul on $40K?

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