Can I Afford to Live in Boston vs Sioux Falls on $120K?
Here's how a $120K/year salary plays out in both cities after taxes, rent, and core living expenses — based on Q1 2026 data.
Monthly budget breakdown
| Expense | Boston MA | Sioux Falls SD |
|---|---|---|
| Monthly take-home (est.) | $6,655 | $7,155 |
| 1BR rent | $3,000 | $1,250 |
| Groceries (est.) | $418 | $365 |
| Transport (est.) | $90 | $42 |
| Utilities | $185 | $155 |
| Internet | $70 | $60 |
| Left after essentials | $2,892/month | $5,283/month |
Frequently asked questions
Is $120K a good salary in Boston?
At $120K/year in Boston, your estimated monthly take-home is $6,655. With 1BR rent around $3,000/month, rent takes up 45% of your take-home. That's considered difficult.
Is $120K a good salary in Sioux Falls?
At $120K/year in Sioux Falls, your estimated monthly take-home is $7,155. With 1BR rent around $1,250/month, rent takes up 17% of your take-home. That's considered very comfortable.
Which city is more affordable on a $120K salary?
Sioux Falls leaves you with more money after core expenses — $5,283/month vs $2,892/month in Boston.
Can I afford to live alone in Boston on $120K?
It's tight. Rent in Boston would take 45% of your $120K take-home pay. You may need to find roommates or look at studios to stay within the 30% rule.
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