Can I Afford to Live in Knoxville vs Madrid on $40K?

Here's how a $40K/year salary plays out in both cities after taxes, rent, and core living expenses — based on Q1 2026 data.

Knoxville, TN
$2,728/mo take-home
Rent: $1,300/mo (48% of take-home)
Difficult
Madrid, ES
$2,028/mo take-home
Rent: $1,200/mo (59% of take-home)
Difficult

Monthly budget breakdown

Knoxville
TN
Madrid
ES
Monthly take-home (est.)
$2,728Best ✓
$2,028
1BR rent
$1,300
$1,200Best ✓
Groceries (est.)
$361Best ✓
$380
Transport (est.)
$45Best ✓
$150
Utilities
$168
$95Best ✓
Internet
$60
$35Best ✓
Left after essentials
$794/month
$168/month
Knoxville (Tennessee) has no state income tax, boosting take-home vs Madrid (ES rate: 21%).

Frequently asked questions

Is $40K a good salary in Knoxville?

At $40K/year in Knoxville, your estimated monthly take-home is $2,728. With 1BR rent around $1,300/month, rent takes up 48% of your take-home. That's considered difficult.

Is $40K a good salary in Madrid?

At $40K/year in Madrid, your estimated monthly take-home is $2,028. With 1BR rent around $1,200/month, rent takes up 59% of your take-home. That's considered difficult.

Which city is more affordable on a $40K salary?

Knoxville leaves you with more money after core expenses — $794/month vs $168/month in Madrid.

Can I afford to live alone in Knoxville on $40K?

It's tight. Rent in Knoxville would take 48% of your $40K take-home pay. You may need to find roommates or look at studios to stay within the 30% rule.

Compare other salary bands — Knoxville vs Madrid

$50K$60K$75K$80K$100K$120K$150K

See the full cost-of-living comparison

Rent, groceries, taxes, transportation, and more — side by side.

Full comparison

Take-home estimates use simplified federal/state brackets and do not account for pre-tax deductions, 401(k), or local taxes. Data: Zillow, BLS, Numbeo · Q1 2026 · For general guidance only