$40K in Boulder = $19,818 in Madrid

Your $40K salary in Boulder (COL 132) has the same purchasing power as $19,818 in Madrid (COL 65). Madrid is cheaper — your money goes 50% further there.

$40K in Boulder, CO
$2,582/mo take-home
Rent: $2,300/mo (89% of take-home)
Difficult
$19,818/yr in Madrid, ES
$1,005/mo take-home
Rent: $1,200/mo (119% of take-home)
Difficult

Budget breakdown — $40K in both cities

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

Expense
Boulder
$40K
Madrid
$40K (same salary)
Monthly take-home$2,582$2,028
1BR rent$2,300$1,200
Groceries$414$380
Transport$80$150
Utilities$138$95
Internet$68$35
Left after essentials-$418/month$168/month
To match your Boulder purchasing power in Madrid, you'd need to earn $19,818/year (50% less than $40K). At that salary, you'd have $-855/mo left after essentials — vs $-418/mo in Boulder.

Frequently asked questions

What is $40K in Boulder equivalent to in Madrid?

$40K in Boulder (COL index 132) has the same purchasing power as $19,818 in Madrid (COL index 65). That's 50% less than your current salary.

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

Yes. If you keep earning $40K after moving to Madrid, you'd have $586 more per month after core expenses — because Madrid is cheaper than Boulder.

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 × (65 ÷ 132) = $19,818. This adjusts for differences in housing, food, transport, and general cost of living.

Other salary amounts — Boulder to Madrid

$50K → $24,773$60K → $29,727$75K → $37,159$80K → $39,636$100K → $49,545$120K → $59,455$150K → $74,318
$40K in Madrid → BoulderMoving from Boulder to MadridBoulder vs Madrid — full comparisonCan I afford Boulder vs Madrid on $40K?

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