How to use this mortgage payment calculator
Choose Estimate one mortgage when you want to model a single home-financing scenario. Enter the home price, down payment percentage, annual interest rate, mortgage term, annual property tax, annual homeowners insurance, monthly HOA dues, any monthly mortgage insurance, and estimated closing costs.
The calculator uses these assumptions to estimate the mortgage amount, monthly principal and interest, broader monthly housing costs, upfront cash needs, and long-term mortgage costs.
Choose Compare two mortgage scenarios when you want to see how different financing assumptions affect the same home. The comparison keeps the home price, property tax, homeowners insurance, and HOA assumptions common while allowing the two scenarios to use different down payments, interest rates, terms, mortgage-insurance amounts, and closing costs.
Understanding your monthly mortgage results
The principal and interest payment is the estimated monthly mortgage payment associated with repaying the borrowed amount and interest over the selected loan term.
The full monthly housing payment provides a broader planning estimate by including the property tax, homeowners insurance, HOA dues, and monthly mortgage insurance amounts you enter.
This broader figure can be more useful for budgeting than principal and interest alone because homeownership can involve several recurring costs in addition to the mortgage itself.
The calculator shows the individual components separately so you can see how much of the estimated monthly housing cost comes from the mortgage versus taxes, insurance, HOA dues, and mortgage insurance.
How your down payment affects the mortgage
Your down payment determines how much of the home price you pay upfront and how much remains to be financed.
A larger down payment generally means a smaller mortgage for the same home price, while a smaller down payment generally means borrowing more.
The calculator also shows the estimated dollar amount of the down payment so you can compare the amount paid upfront with the amount financed.
How the mortgage rate and term affect your payment
The calculator is designed for a fixed-rate mortgage using the interest rate and loan term you enter.
A higher mortgage rate generally increases the monthly principal-and-interest payment and the amount of interest paid over time. A lower rate generally has the opposite effect, assuming the other inputs remain the same.
The loan term also matters. A longer term can reduce the monthly payment by spreading repayment across more years, while a shorter term can require a higher monthly payment but may reduce the amount of interest paid over the life of the mortgage.
The results may also show an estimated final principal-and-interest payment. This can differ slightly from the regular payment as the remaining mortgage balance is completed.
Property tax, homeowners insurance, and HOA dues
The property tax, homeowners insurance, and HOA amounts you enter are included in the broader monthly housing estimate.
These costs are separate from mortgage principal and interest, but they can materially affect the amount you may need to budget for housing each month.
Actual taxes, insurance premiums, and HOA dues can change over time even when the mortgage rate itself is fixed.
Mortgage insurance
The calculator allows you to enter a monthly mortgage-insurance amount when it applies to the scenario you are evaluating.
That amount is included in the estimated monthly housing payment, but the calculator does not automatically determine whether mortgage insurance is required or what a lender or insurer may charge.
Mortgage insurance can also change or end under certain loan circumstances, which this calculator does not attempt to predict.
For a dedicated estimate of mortgage-insurance costs, use the MarketReview PMI / Mortgage Insurance Calculator.
Understanding upfront cash
The calculator shows the down payment and estimated closing costs as upfront expenses associated with the home purchase.
Upfront cash combines the modeled down payment with the closing costs you enter.
Changing the down payment can therefore affect both the amount of cash needed at the beginning of the transaction and the amount that remains to be financed.
Lifetime mortgage interest and total principal and interest
Lifetime mortgage interest estimates how much interest may be paid over the full mortgage term if the loan follows the assumed repayment schedule.
Total principal and interest shows the combined amount of mortgage principal and estimated interest paid over the life of the loan.
These figures are separate from property taxes, homeowners insurance, HOA dues, mortgage insurance, and closing costs, which represent other housing or transaction expenses.
Comparing two mortgage scenarios
Comparison mode lets you evaluate two financing approaches for the same home while keeping the shared property-cost assumptions consistent.
Each scenario can use a different down payment, mortgage rate, loan term, monthly mortgage-insurance amount, and estimated closing costs.
The results help you compare monthly housing payments, upfront cash requirements, loan amounts, lifetime mortgage interest, total principal and interest, and mortgage terms.
This can reveal tradeoffs that a monthly-payment comparison alone may miss. A scenario with a lower monthly payment may require more cash upfront, keep the mortgage outstanding longer, or produce a different amount of lifetime interest.
Why a lower mortgage payment can have tradeoffs
Several changes can reduce an estimated monthly mortgage payment, but they do not all have the same financial effect.
A larger down payment can reduce the amount borrowed but requires more cash upfront. A longer loan term can reduce the monthly principal-and-interest payment but may keep you in debt for more years.
A lower interest rate can reduce borrowing costs, while differences in mortgage insurance and closing costs can affect other parts of the overall home-financing picture.
For that reason, consider the monthly payment together with upfront cash, loan amount, term, and lifetime interest when comparing scenarios.
Important assumptions and limitations
This calculator is a mortgage-planning illustration, not a lender quote, loan estimate, approval decision, or guarantee of financing.
The mortgage estimate assumes a fixed interest rate and a standard repayment period based on the term you enter.
Property tax, homeowners insurance, HOA dues, mortgage insurance, and closing costs are based on the amounts you provide. The calculator does not predict how those costs may change in the future.
Closing costs are treated as upfront expenses rather than part of the modeled mortgage balance.
The calculator does not automatically price mortgage insurance, determine mortgage-insurance eligibility or cancellation, estimate lender-specific fees, or model adjustable-rate mortgages.
Actual lender calculations, escrow requirements, payment schedules, fees, insurance costs, tax amounts, and other loan-specific details may differ from the estimate.
Related calculators
Mortgage Affordability Calculator
PMI / Mortgage Insurance Calculator
Learn more about mortgage costs and home financing
Explore MarketReview's Mortgage resources for more information about mortgage payments, loan terms, down payments, home-financing costs, and the factors that can affect the cost of buying a home.