Mortgage Payment Calculator
A mortgage payment calculator estimates monthly principal and interest from loan amount, rate, and term. It is not a lender quote and usually does not include taxes, insurance, HOA, reserves, or closing costs unless those are modeled separately.
Estimates are based on your inputs and assumptions. DealSharp does not provide financial, investment, legal, tax, or lending advice.
Run the number, then pressure-test the assumptions.
A mortgage payment calculator estimates monthly principal and interest from loan amount, rate, and term. It is not a lender quote and usually does not include taxes, insurance, HOA, reserves, or closing costs unless those are modeled separately.
Use this page to understand the metric directionally, then compare it against financing, reserves, repair risk, cash flow, and your own constraints.
Use this working calculator as a starting point, then run the full deal in DealSharp when you need more inputs, side-by-side scenarios, and risk context.
Monthly payment = P x [r(1+r)^n] / [(1+r)^n - 1], where P is loan amount, r is monthly rate, and n is number of payments
A $240,000 loan at 7% for 30 years has an estimated principal and interest payment of about $1,597 per month.
Assumptions
Mortgage payment
Estimated outputs
Scenario snapshot
Scenario estimate based on the inputs shown here. Use the full DealSharp app to compare financing, repairs, vacancy, cash flow, and risk assumptions before deciding.
How to read this number
The useful move is not treating one number as a final answer. Use it to decide which assumptions deserve more review, then compare the result against cash flow, financing, reserves, repair risk, and your own constraints.
Inputs required
- Metric inputs shown in the formula or calculator.
- Income, expense, debt, value, and cash assumptions where relevant.
- Investor-provided numbers that should be checked against source documents.
Outputs explained
- Scenario estimate based on the inputs.
- Plain-English context for comparing the metric.
- Limitations and assumptions to review before relying on the result.
Assumptions to review
- Inputs are estimates supplied by the user.
- Market rent, lender terms, taxes, insurance, repairs, and legal details can change the result.
- DealSharp does not provide financial, investment, legal, lending, tax, or accounting advice.
What this tells you
- Debt service is a major input for rental cash flow and DSCR.
- Small rate changes can materially change monthly payment.
- Payment estimates should be combined with taxes, insurance, repairs, and reserves.
What this does not tell you
- This does not include lender fees, points, mortgage insurance, escrow, or final loan terms.
- It does not confirm qualification or approval.
Common mistakes
- Treating principal and interest as the full monthly property cost.
- Forgetting taxes, insurance, HOA, utilities, and repairs.
- Using an outdated interest rate assumption.
FAQ
Does this include taxes and insurance?
This basic payment estimate focuses on principal and interest. Deal analysis should model taxes and insurance separately.
Why does rate matter so much?
Higher rates increase debt service, which can reduce cash flow and DSCR.
Run the full deal before deciding
This page helps with one metric or workflow. DealSharp is built for full real estate deal analysis: assumptions, financing, cash flow, repair scenarios, DSCR, cap rate, and risk flags based on your inputs.
Open DealSharpDisclaimer
DealSharp provides calculation and scenario-modeling tools for informational purposes only. Outputs are estimates based on your inputs and assumptions. DealSharp does not provide financial, investment, legal, lending, tax, or accounting advice. Verify important decisions with qualified professionals.