Base housing stack
Use entered price, down payment, and monthly non-loan costs to anchor realistic ownership burden.
Loan calculator
Mortgage Payment Calculator
Estimate a monthly mortgage payment using home price, down payment, interest rate, loan term, property tax, insurance, PMI, HOA dues, and optional extra principal payments.
Calculate mortgage payment
Principal & interest—
Estimated total monthly—
Loan amount—
Total scheduled interest—
Estimated payoff time—
Interest saved with extra payment—
Live scenario comparison
Baseline monthly—
With +$20 extra principal—
Half-term scenario—
Payment breakdown insight
This insight updates with the largest visible driver in the monthly estimate.
Principal & interest—
Taxes, insurance, PMI & HOA—
Amortization preview
Shows the first 12 monthly principal-and-interest rows. Download CSV for the modeled full schedule.
| Month | Payment | Principal | Interest | Balance |
|---|
Yearly summary
How to read this result
Use principal and interest to understand the loan payment, then use estimated total monthly to include the housing-cost assumptions entered here. Extra principal is modeled as an optional acceleration scenario.
Formula
The principal-and-interest payment uses the standard fixed-rate amortization formula. Extra principal is modeled month by month by applying interest, then subtracting the scheduled payment plus extra principal until the balance reaches zero.
Worked example
For a $350,000 home, $70,000 down payment, 6.5% rate, and 30-year term, the principal-and-interest payment is estimated first. Taxes, insurance, PMI, HOA dues, and any extra principal payment are then added to show a fuller monthly housing-cost scenario.
How to interpret the payment
The principal-and-interest result is the scheduled mortgage payment before optional housing costs. The estimated total monthly result adds tax, insurance, PMI, HOA dues, and extra principal. Extra principal increases the amount paid each month but can shorten payoff time and reduce interest.
Try changing the down payment and term separately. A larger down payment lowers the loan amount, while a shorter term often raises the payment but can reduce total interest. PMI and HOA dues can materially change a monthly budget even though they do not reduce the loan balance.
Common input mistakes
- Entering annual property tax in the monthly property tax field.
- Leaving insurance, PMI, or HOA dues at zero when comparing a realistic monthly budget.
- Treating extra principal as a required payment instead of an optional acceleration assumption.
- Comparing homes by principal and interest only instead of total housing cost.
FAQ
Does this include mortgage insurance?
Yes, if you enter a monthly PMI or mortgage insurance amount. The calculator does not estimate PMI automatically.
Does an extra principal payment reduce the normal monthly payment?
No. This simplified model keeps the scheduled payment the same and uses the extra amount to reduce principal faster.
Is this an affordability calculator?
No. It estimates payment components, not whether a home is affordable for your situation.
How to read this housing payment stack
How to read this result
Start with principal and interest, then compare it with total monthly housing cost. This page is most useful when it shows whether payment pressure comes from loan structure or from taxes, insurance, PMI, HOA, and optional extra principal layered on top.
Before acting, compare result with official loan estimate, property tax records, insurance quote, PMI rules, HOA disclosures, and any qualified guidance you rely on. See How We Calculate and the Disclaimer for more context.
Housing-payment memo
Scenario comparison
Use this page like housing-cost stack review, not only mortgage formula check. Baseline row shows entered loan. Extra-principal row asks what faster payoff costs in monthly cash flow. Shorter-term row shows whether discipline comes better from contract term or optional overpayment.
If total monthly barely changes when rate changes but jumps when taxes or insurance move, non-loan housing costs deserve more attention than APR shopping. If shorter term raises payment sharply, contract choice may be main affordability lever.
Acceleration pressure
Test extra principal separately so faster payoff does not get confused with required housing payment.
Term discipline
Compare shorter term with optional extra payments to see which path better matches household cash flow.
Housing-cost accuracy check
Result quality checklist
- Tax, insurance, PMI, and HOA entries are monthly amounts, not annual figures pasted into monthly fields.
- Price and down payment reflect same transaction assumption and same closing scenario.
- Rate and term match actual quote being reviewed.
- Extra principal is treated as optional acceleration, not hidden required cost.
- Maintenance, utilities, and move-related cash needs are reviewed outside this simplified model.
Method and verification trail
- Method used: Standard amortization estimates principal-and-interest payment, then adds user-entered monthly housing costs and optional extra principal.
- Primary source type to verify: Loan Estimate, property-tax record, insurance quote, PMI disclosure, and HOA statement if applicable.
- What to confirm in real documents: Quoted rate, loan term, cash-to-close assumptions, PMI duration, escrow treatment, tax basis, and whether HOA or insurance figures are current.
- Scope limit: This page does not fully model maintenance, utilities, tax deductions, rate locks, closing-cost choices, or underwriting approval.
For site-wide methodology, review How We Calculate. For sourcing and corrections standards, review Editorial Policy.
Next housing checks to run
Related calculators
Use the mortgage extra payment calculator for deeper payoff acceleration review, the rent affordability calculator when comparing housing budgets, and the buy vs rent calculator for ownership-versus-renting assumptions.
Related guides
Read how mortgage payments work for payment-structure basics, mortgage extra payments explained for acceleration tradeoffs, and mortgage refinance explained when a new rate or term is part of decision.