20 Year Mortgage Payment Calculator

Plan a 20-year home loan with clarity today. Adjust rate, down payment, and fees instantly. See totals, amortization, and charts in one place now.

Calculator Inputs

Use for a home purchase scenario.
If filled, this overrides purchase inputs.
Used only with purchase price.
%
Used if amount is empty.
%
Fixed-rate assumption for 20 years.
Used to label the schedule dates.
Monthly Escrows and Fees (optional)
Converted to a monthly estimate.
Converted to a monthly estimate.
%
Applied to the original loan amount.
Extra Payments (optional)
Added to principal each month.
Applied every 12th payment.
Applied with the first payment.
Results will appear above this form after submitting.

Example Data Table

Scenario Purchase Price Down Payment Rate Taxes (Annual) Insurance (Annual) Estimated P+I
Starter Home $300,000 $60,000 (20%) 6.25% $3,600 $1,200 $1,758
Move-Up Home $450,000 $90,000 (20%) 6.75% $5,400 $1,500 $2,747
Refinance Case — — 5.50% $4,200 $1,350 $2,063
Example values are illustrative and rounded for quick comparison.

Formula Used

For a fixed-rate loan, the monthly principal-and-interest payment uses the standard amortization formula:

Payment = P × [ r × (1 + r)n ] ÷ [ (1 + r)n − 1 ]
  • P = loan principal
  • r = monthly interest rate (annual rate ÷ 12)
  • n = total payments (20 × 12 = 240)

Monthly totals add estimated escrows (taxes, insurance), optional PMI, HOA, and fees. Extra payments reduce principal faster and may shorten payoff time.

How to Use This Calculator

  1. Enter either a loan amount or a purchase price.
  2. If using purchase price, add down payment (amount or percent).
  3. Set the interest rate and (optional) the first payment date.
  4. Add taxes, insurance, PMI, HOA, and any monthly fees you expect.
  5. Optionally add extra payments to see faster payoff outcomes.
  6. Click Calculate. Download CSV or PDF if needed.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.