A mortgage payment is more than principal and interest. The Mortgage / Home Loan Calculator adds taxes, insurance and PMI to show your true monthly outlay (PITI), the total interest over the life of the loan, and the all-in cost of owning. Add an extra monthly payment to see how much faster you could be free of the loan.
Mortgage / Home Loan Calculator
Calculate your monthly mortgage payment including principal, interest, taxes, insurance and PMI, plus total interest and lifetime cost. Add extra payments to see the payoff accelerate.
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About Mortgage / Home Loan Calculator
Features
- Full PITI: Principal, interest, tax, insurance and PMI in one payment.
- Total cost: Lifetime interest and all-in cost at the entered rate.
- Extra payments: See interest saved and years cut.
- Down-payment sensitivity: PMI appears automatically under 20% down.
- Clear summary: Monthly breakdown and totals at a glance.
- Export: CSV, JSON or plain text of the full model.
How to Use
- Price & down: Home price and down-payment amount.
- Loan: Interest rate and term in years.
- Housing costs: Annual tax, insurance and HOA.
- PMI: Entered if under 20% down (or estimate).
- Extra: Optional extra principal per month.
- Review & export.
Examples
Example 1 — 20% down. $400k at 6.5% / 30y, $5k tax, $1.2k insurance: PITI around $2,600/mo.
Example 2 — 5% down. Same home with PMI: payment rises and total interest grows.
Example 3 — Extra $200. Adding $200/mo can cut years and tens of thousands in interest.
Example 4 — 15-year. Same balance at 6% / 15y nearly halves total interest.
Example 5 — HOA. Adding $350 HOA lifts the monthly nut but not the loan itself.
Benefits
- True payment: No more surprise that PITI exceeds P&I.
- Interest reality: See the real lifetime cost of the rate.
- Payoff power: Quantify extra-payment benefits instantly.
- Plan the buffer: Know the monthly commitment before you commit.
- Private: No account, no upload, nothing stored.
Frequently Asked Questions
What is included in a mortgage payment?
Principal and interest (P&I) plus, typically, property tax, homeowners insurance and possibly PMI — together called PITI.
What is PMI?
Private mortgage insurance applies when your down payment is below 20%; it protects the lender and drops once you reach 20% equity.
How do extra payments help?
Extra principal each month reduces the balance faster, cutting total interest and shortening the loan with no change to the required payment.
Why does term matter?
A 15-year loan has higher monthly payments but far less total interest than a 30-year loan at the same rate.
Is tax and insurance exact?
They are estimates; your lender’s escrow analysis sets the real amounts. Enter what you expect to pay.
Does this account for refinancing?
No — it models the loan as given. Use the refinance tool to compare a new loan.
Is my data stored?
No. Everything runs in your browser; nothing is uploaded, saved or logged.