St. Louis, MO Mortgage Calculator
Estimate your monthly mortgage payment in St. Louis including property taxes, homeowners insurance, PMI, and 2026 loan limits.
Local Home Values & Affordability
At a median of $150,000, St. Louis sits 52% below the national median of $310,000 — making it one of the more affordable markets in our dataset and well within FHA financing range.
A 20% down payment on a median St. Louis home requires $30,000 in cash — or $5,250 for an FHA-minimum 3.5% down payment. Buyers with less than 20% down will also need to budget for PMI or FHA MIP.
Property Tax in This Market
At 1.45%, St. Louis City's effective property tax rate runs 32% above the national average of 1.10%, contributing meaningfully to the total monthly PITI payment.
Based on the 1.45% effective rate and a median home value of $150,000, a typical homeowner in St. Louis City pays approximately $2,175 in annual property taxes — or $181 per month added to their mortgage payment.
Sources: Tax Foundation 2025
Homeowners Insurance Costs
Homeowners insurance in St. Louis City runs approximately $1,750/year ($146/month), in line with the national average of $1,600.
Premium quotes in St. Louis City typically range from $1,200 to $2,600 per year depending on home age, construction type, coverage limits, and your insurer. Always get multiple quotes.
Sources: NAIC 2024
Loan Limits & Financing Options
A buyer purchasing the median St. Louis home ($150,000) with FHA's minimum 3.5% down would borrow $144,750 — well within the $541,287 baseline FHA limit for this county. FHA financing is a viable option for most buyers here.
With 20% down on a median-priced home, the loan amount of $120,000 stays $712,750 below the $832,750 conforming limit — giving buyers access to conventional Fannie/Freddie pricing without jumbo underwriting.
All FHA loans require an upfront mortgage insurance premium (UFMIP) of 1.75% of the loan amount, plus an annual MIP of 0.55%–0.75% of the loan balance paid monthly. On a $144,750 FHA loan, expect approximately $66/month in ongoing MIP — added to principal, interest, taxes, and insurance.
Sources: HUD ML 2025-23, FHFA 2026, HUD MIP Rates 2023
Extra Monthly Payment
Estimated Monthly Payment
$1,121
Estimates are for educational purposes only and are not a loan offer or commitment to lend.
Loan Amount: $120,000
LTV: 0.01%
P&I Payment
$794
Total Interest
$165,962
over loan life
Payoff
30 yr
Closing Costs
$2,588–$4,830
est. range
Monthly Payment Breakdown
2026 Loan Limit Context
FHA Limit
$541,287
Conforming Limit
$832,750
Amortization Schedule
| Mo. | Payment | Principal | Interest | Balance | Total Interest |
|---|---|---|---|---|---|
| 1 | $794 | $99 | $695 | $119,901 | $695 |
| 2 | $794 | $100 | $694 | $119,801 | $1,389 |
| 3 | $794 | $100 | $694 | $119,700 | $2,083 |
| 4 | $794 | $101 | $693 | $119,599 | $2,777 |
| 5 | $794 | $102 | $693 | $119,498 | $3,469 |
| 6 | $794 | $102 | $692 | $119,395 | $4,161 |
| 7 | $794 | $103 | $692 | $119,292 | $4,853 |
| 8 | $794 | $103 | $691 | $119,189 | $5,544 |
| 9 | $794 | $104 | $690 | $119,085 | $6,234 |
| 10 | $794 | $105 | $690 | $118,980 | $6,924 |
| 11 | $794 | $105 | $689 | $118,875 | $7,613 |
| 12 | $794 | $106 | $688 | $118,769 | $8,301 |
2026 Loan Limits — St. Louis City, MO
| Limit Type | 2026 Limit | Note |
|---|---|---|
| FHA Loan Limit (1-unit) | $524,225 | Max loan for FHA-insured mortgage |
| Conforming Loan Limit (1-unit) | $806,500 | Fannie Mae / Freddie Mac eligible |
Source: HUD / FHFA. Data as of 2025-01-15.
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