Mortgage Calculator: Estimate Your Monthly Mortgage Payment Fast
Run your numbers on any property loan in under 30 seconds, enter three inputs, get your estimated monthly mortgage payment instantly.
The total amount you're borrowing — subtract your down payment from the purchase price (e.g. $400,000 purchase minus 20% down = $320,000).
Your lender's quoted rate as a percentage (e.g. 6.75). Use the rate from your loan estimate, not the APR.
The repayment period in years — typically 15 or 30 for investment properties.
Estimated monthly principal-and-interest payment based on your inputs.
How the Mortgage Calculator Helps STR Buyers
DollarSign (Lucide), Know Your Monthly Payment
See your exact monthly mortgage payment before you commit to any short-term rental purchase.
BarChart2 (Lucide), Compare Financing Scenarios
Run multiple loan amounts and terms side by side to find the structure that fits your cash flow.
TrendingUp (Lucide), Protect Your Profit Margin
Confirm that projected rental revenue clears your debt service before signing a purchase contract.
How the Mortgage Calculator Works
Three numbers drive every calculation. Enter them accurately and the tool returns your estimated monthly mortgage payment in seconds.
Loan Amount
The total amount borrowed from the lender after subtracting your down payment from the purchase price.
It is the only number that directly scales your principal balance — a 0.5% rate difference on a $400,000 loan shifts your monthly payment by roughly $115.
Annual Interest Rate (%)
The yearly interest rate your lender quotes, expressed as a percentage.
Investment property loans run 0.5–0.75% higher than primary residence rates; on a $450,000 loan that gap costs an extra $225 per month, so use the actual rate from your loan offer.
Loan Term (Years)
The number of years over which you'll repay the loan, typically 15 or 30.
A 15-year term on a $350,000 loan at 7% saves over $180,000 in interest versus a 30-year term, but raises your monthly payment by 40–50%, which tightens cash flow during low-occupancy months.
Run Your First Calculation Today
See exactly what a property will cost you before you commit. Enter three numbers into the mortgage calculator and get your monthly payment in seconds.
No credit card required. Cancel anytime.
Frequently Asked Questions
Does the Calculator Account for Property Taxes and Insurance?+
No. The mortgage calculator returns principal and interest only. For a full picture of your monthly carrying cost, add your annual property tax bill and landlord insurance premium manually, most STR lenders require both at closing anyway.
What Loan Amount Should a Short-term Rental Host Enter?+
Enter the amount you're borrowing, not the purchase price. If you're putting 25% down on a $400,000 property, your loan amount is $300,000, that's the figure that drives your monthly payment calculation.
How Does Loan Term Affect My STR Cash Flow?+
A 15-year term cuts total interest paid roughly in half compared to 30 years, but raises your monthly debt obligation by 40-50%. That higher fixed cost shrinks your buffer during low-occupancy months, which matters more for seasonal markets than year-round ones.
Can This Tool Help Me Compare Two Different Properties?+
Yes. Run the calculator twice with each property's loan amount, rate, and term. The difference in monthly payments tells you exactly how much more revenue the pricier property needs to generate to justify the higher debt load.
What Interest Rate Should Hosts Use for Investment Properties?+
Get ready to pay more for your short-term rental loan. It's a simple fact. Lenders classify these as investment property loans which carry interest rates a full 0.5–0.75% higher than the rates for primary residence mortgages . For a $450,000 loan, that's an extra $225 hitting your bank account each month. So, use the actual rate your lender quotes you in writing. Don't get cute and use some rosy number you saw advertised on a banner ad.