Not financial advice. Mortgage FV Calculator is a software calculator, not a personal-finance product or advisory service. It computes standard financial functions and displays the results for your convenience. Nothing here constitutes, or is intended to constitute, financial, investment, tax, legal, mortgage, credit, or insurance advice. Always consult a qualified professional before making any financial decision.
St. Louis mortgage calculator
A median-priced St. Louis, MO home at 6.75% over 30 years, with Missouri property tax of 0.88% and $2,900 a year of homeowners insurance. Every figure below is computed on our amortising engine — nothing is estimated in the browser.
$1,551 a month, all in
Principal and interest are $1,095; escrow and PMI add the rest. Over the full term the loan costs $225,273 in interest. Discounted at 5%, buying here has a net present value of $100,217 ($254,134 in today’s dollars).
Within Missouri, St. Louis is the cheapest of the 4 Missouri markets covered here — Kansas City runs about 1.33x these prices. Buyers priced out of the expensive end of the state often end up comparing exactly this pair.
Rents here are high relative to prices — a rent index of 0.95 against a price index of 0.75. That combination favours buying sooner, because the payment you avoid is larger relative to the price you pay.
St. Louis is cheaper than Missouri as a whole — $187,500 against a state median of $250,000, roughly 25% below. On a 20% deposit that is $12,500 less to find up front.
Monthly cost in St. Louis vs comparable rent
Owning is stacked by component; renting is the local median asking rent.
The monthly breakdown
| Median home price | $187,500 |
|---|---|
| Down payment (10%) | $18,750 |
| Loan amount | $168,750 |
| Principal & interest | $1,095/mo |
| Property tax (0.88%) | $138/mo |
| Homeowners insurance | $242/mo |
| PMI while above 80% LTV | $77/mo |
| Total monthly payment | $1,551/mo |
| Comparable rent | $1,235/mo |
What a rate move does to the St. Louis payment
| Rate | Principal & interest |
|---|---|
| 5.5% | $958/mo |
| 6% | $1,012/mo |
| 6.5% | $1,067/mo |
| 7% | $1,123/mo |
| 7.5% | $1,180/mo |
| 8% | $1,238/mo |
Rent or buy in St. Louis?
Against $1,235 a month in rent, over 7 years renting leaves you about $4,017 better off — $3,379 once 2.5% inflation is stripped out. See the Missouri rent-vs-buy page.
Where these numbers come from
Missouri medians come from editorial and are refreshed weekly. The St. Louis figures index those state medians to the local market, so they track the same feed rather than going stale. Insurance and the state income tax rate are editorial. Treat everything here as a planning estimate, not a quote.