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Mortgage Calculator β€” Monthly Payment & Amortization

Calculate PITI monthly payment, PMI, total interest, payoff date, and full amortization schedule with extra-payment simulator.

Calculations based on standard US mortgage conventions

Applied when down payment is under 20%. Removal shown when loan balance reaches 80% LTV β€” informational only.

Total Monthly Payment

$3,178.27

Principal & Interest

$2,528.27

Monthly Payment Breakdown (PITI + PMI + HOA)

Principal & Interest$2,528.27
Property Tax$500.00
Homeowners Insurance$150.00
PMI (not required)$0.00
HOA$0.00
Total Monthly$3,178.27

Loan amount: $400,000 Β· Down payment: $100,000 Β· Payoff: June 2056 Β· Total interest: $510,178

Amortization Schedule

MonthPaymentPrincipalInterestExtraBalance
1$2,528.27$361.61$2,166.67β€”$399,638.39
2$2,528.27$363.56$2,164.71β€”$399,274.83
3$2,528.27$365.53$2,162.74β€”$398,909.30
4$2,528.27$367.51$2,160.76β€”$398,541.78
5$2,528.27$369.50$2,158.77β€”$398,172.28
6$2,528.27$371.51$2,156.77β€”$397,800.77
7$2,528.27$373.52$2,154.75β€”$397,427.26
8$2,528.27$375.54$2,152.73β€”$397,051.71
9$2,528.27$377.58$2,150.70β€”$396,674.14
10$2,528.27$379.62$2,148.65β€”$396,294.52
11$2,528.27$381.68$2,146.60β€”$395,912.84
12$2,528.27$383.74$2,144.53β€”$395,529.10

About Mortgage Calculator

Our free Mortgage Calculator shows your full monthly payment β€” principal, interest, property taxes, insurance, PMI, and HOA β€” not just P&I.

Includes a complete amortization schedule with CSV download and an extra-payment simulator showing interest saved and months shaved off.

PMI is auto-estimated when down payment is under 20%, with informational guidance on when equity may reach the 80% LTV threshold.

Read the full guide: Mortgage calculator guide β€” PITI, PMI, and amortization explained

When Should You Use Mortgage Calculator?

Home shopping

See true monthly cost including taxes, insurance, and PMI.

Down payment decisions

Compare 10% vs 20% down and PMI impact.

Rate shopping

Model how interest rate changes affect payment and total interest.

Extra payment planning

See how additional monthly payments shorten the loan.

Amortization review

Understand how principal vs interest shifts over 15–30 years.

Frequently Asked Questions

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