Mortgage Calculator — Payment, Affordability & Extra Savings
Estimate monthly mortgage costs, cash to close, amortization, and extra-payment savings, or plan an affordable home price from income, debts, and target DTI.
Purchase and loan
Compare the required monthly housing cost with an optional extra principal payment.
Taxes, insurance, fees, and extra principal
Use estimates from a Loan Estimate, tax authority, insurer, or HOA when available.
Income, debts, and planning assumptions
This estimate solves for a home price at your selected total debt-to-income ratio. It is not lender pre-approval.
Monthly housing breakdown
Monthly and upfront details
| Down payment | |
| Loan-to-value | |
| Property tax | |
| Home insurance | |
| PMI | |
| HOA | |
| Extra principal | |
| Monthly cash with extra |
Loan balance over time
Lifetime principal and interest
| Principal repaid | |
| Interest with regular payments | |
| Interest with extra plan | |
| Principal + interest total | |
| Regular payoff | |
| Extra-plan payoff |
Estimated monthly housing
Affordability assumptions
| Gross monthly income | |
| Total debt budget | |
| Other monthly debts | |
| Property tax | |
| Insurance | |
| PMI + HOA |
Annual amortization schedule
| Year | Beginning balance | Principal | Interest | Ending balance |
|---|
Mortgage payment calculator with taxes and insurance
The required monthly estimate combines principal, interest, property tax, homeowners insurance, mortgage insurance, and HOA fees. Optional extra principal is shown separately.
Extra payment mortgage calculator
Extra principal lowers the balance sooner. The planner compares the extra-payment schedule with regular payments to show estimated interest and time saved.
Mortgage affordability calculator
Affordability mode uses gross income, other monthly debts, a selected total DTI, and ownership-cost assumptions. Actual lender qualification can differ.
Closing costs and cash to close
Estimated cash to close adds the down payment and selected closing-cost percentage. Deposits, seller credits, lender credits, and other adjustments are not included.
Mortgage amortization
A fixed-rate payment keeps principal and interest level, while the share applied to principal rises as the outstanding balance falls.
Mortgage formula
Monthly principal and interest use M = P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ − 1), where P is principal, r is the monthly rate, and n is the payment count.
Sources
CFPB total monthly paymentCFPB debt-to-income ratioCFPB Loan Estimate
