Quick answer
On $120K in St. Louis, your take-home is $7,305/month and 1BR rent takes up 15% of that. After rent, utilities, and groceries you have $5,725/month left.
Affordability Calculator · MO
Can I Afford to Live in St. Louis on $120K?
Real math for $120K/year in St. Louis, MO: taxes, rent, utilities, groceries, and how much is left. No filler.
Last updated: April 23, 2026
Monthly Budget Breakdown
| Line Item | Monthly |
|---|---|
| Gross income | $10,000 |
| Federal income tax (~22% effective) | −$2,200 |
| State income tax (Up to 4.95%) | −$495 |
| Take-home pay | $7,305 |
| 1BR rent (St. Louis median) | $1,100 |
| Utilities (avg) | $145 |
| Groceries (avg, 1 person) | $335 |
| Left after essentials | $5,725 |
Federal tax uses a rough effective rate. State tax: Up to 4.95%. Essentials = 1BR rent + utilities + groceries.
Affordability Verdict
Comfortably affordable
You're well within the 30% rule — room to save and spend on other things.
Your $120K salary leaves $5,725 per month after 1BR rent ($1,100), utilities ($145), and groceries ($335) in St. Louis.
What You Can Realistically Afford
Your 30% rent cap: $2,192/month
The standard guideline is to spend no more than 30% of take-home on rent. On $120K inSt. Louis, that's $2,192/month.
1-Bedroom: Within budget
$1,100/mo
15% of take-home
2-Bedroom: Within budget
$1,380/mo
19% of take-home solo
Buy a Home: Possible
$215K median
Your ceiling ~$312K · need $43K down
50/30/20 Budget for $120K in St. Louis
Based on $7,305/month take-home.
50% — Needs
$3,653
Rent, utilities, groceries, transport, insurance
30% — Wants
$2,192
Dining out, entertainment, subscriptions, hobbies
20% — Savings
$1,461
Emergency fund, retirement, investments
Frequently Asked Questions
Can I afford a 1-bedroom apartment in St. Louis on a $120K salary?
On $120K in St. Louis, your take-home is roughly $7,305/month after federal and state taxes. A 1BR averages $1,100/month, which is 15% of your take-home. That's within the recommended 30% rule.
What is the take-home pay for a $120K salary in St. Louis?
On a $120K gross salary in St. Louis, you pay roughly 22% in federal income tax and 5% in state income tax. That leaves approximately $7,305/month in take-home pay.
How much rent can I afford on $120K in St. Louis?
Using the 30% rule, your rent cap on $120K in St. Louis is $2,192/month. The median 1BR in St. Louis is $1,100, so you can comfortably afford a 1BR.
Can I buy a home in St. Louis on $120K?
On $120K in St. Louis, you can qualify for a mortgage up to roughly $312K based on a 28% payment-to-take-home ratio. The median home is $215K, so buying is within reach — but you'll need a $43K down payment (20%).