$40K in Boise = $18,286 in Sofia

Your $40K salary in Boise (COL 105) has the same purchasing power as $18,286 in Sofia (COL 48). Sofia is cheaper — your money goes 54% further there.

$40K in Boise, ID
$2,535/mo take-home
Rent: $1,600/mo (63% of take-home)
Difficult
$18,286/yr in Sofia, BG
$1,095/mo take-home
Rent: $540/mo (49% 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
Sofia
$40K (same salary)
Monthly take-home$2,535$2,395
1BR rent$1,600$540
Groceries$372$380
Transport$45$150
Utilities$145$75
Internet$60$20
Left after essentials$313/month$1,230/month
To match your Boise purchasing power in Sofia, you'd need to earn $18,286/year (54% less than $40K). At that salary, you'd have $-70/mo left after essentials — vs $313/mo in Boise.

Frequently asked questions

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

$40K in Boise (COL index 105) has the same purchasing power as $18,286 in Sofia (COL index 48). That's 54% less than your current salary.

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

Yes. If you keep earning $40K after moving to Sofia, you'd have $917 more per month after core expenses — because Sofia 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 × (48 ÷ 105) = $18,286. This adjusts for differences in housing, food, transport, and general cost of living.

Other salary amounts — Boise to Sofia

$50K → $22,857$60K → $27,429$75K → $34,286$80K → $36,571$100K → $45,714$120K → $54,857$150K → $68,571
$40K in Sofia → BoiseMoving from Boise to SofiaBoise vs Sofia — full comparisonCan I afford Boise vs Sofia on $40K?

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