Can I Afford to Live in Cartagena vs Boston 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.
Monthly budget breakdown
| Expense | Cartagena CO | Boston MA |
|---|---|---|
| Monthly take-home (est.) | $2,728 | $2,562 |
| 1BR rent | $560 | $3,000 |
| Groceries (est.) | $380 | $418 |
| Transport (est.) | $150 | $90 |
| Utilities | $70 | $185 |
| Internet | $30 | $70 |
| Left after essentials | $1,538/month | -$1,201/month |
Frequently asked questions
Is $40K a good salary in Cartagena?
At $40K/year in Cartagena, your estimated monthly take-home is $2,728. With 1BR rent around $560/month, rent takes up 21% of your take-home. That's considered very comfortable.
Is $40K a good salary in Boston?
At $40K/year in Boston, your estimated monthly take-home is $2,562. With 1BR rent around $3,000/month, rent takes up 117% of your take-home. That's considered difficult.
Which city is more affordable on a $40K salary?
Cartagena leaves you with more money after core expenses — $1,538/month vs $-1,201/month in Boston.
Can I afford to live alone in Cartagena on $40K?
Yes. At $40K in Cartagena, rent takes 21% of your take-home, leaving $1,538/month after essentials. Most financial planners recommend keeping rent below 30%.
See the full cost-of-living comparison
Rent, groceries, taxes, transportation, and more — side by side.
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