Mortgage Amortization Calculator - Calculator See


Mortgage Amortization Calculator

Generate a detailed monthly and annual mortgage amortization schedule showing principal paydown, interest costs, and remaining balance.

Calculator Inputs

$
Financed balance.
%
30-year fixed APR.
Term duration.
$
Accelerated payoff addition.

Calculated Results

Monthly Principal & Interest (P&I)
$1,896.20 / month
Total Interest Paid Over 30 Years $382,633.40
Total Loan Payoff Cost $682,633.40
Payoff Date September 2056
Values calculate live as you adjust inputs.

About Mortgage Amortization Calculator

Full amortization table generator demonstrating how each payment shifts from majority interest to majority principal over time.

What is Mortgage Amortization Calculator?

Full amortization table generator demonstrating how each payment shifts from majority interest to majority principal over time.

How to Use This Calculator

  1. Enter mortgage principal and interest rate.
  2. Choose loan term (15, 20, or 30 years).
  3. Add optional extra monthly principal payment.
  4. View amortization table and accelerated payoff date.

The Mathematical Formula & Variables

Interest_t = Balance * (r/12); Principal_t = Payment - Interest_t

Step-by-Step Worked Example

Scenario: $300,000 at 6.5% for 30 years with $100/mo extra payment.

  1. Base payment = $1,896.20.
  2. With $100 extra, mortgage pays off 4.5 years earlier (25.5 years total).
  3. Saves over $62,000 in interest.

Result: Saves $62,000 interest; 4.5 yrs earlier

Frequently Asked Questions

What is the tipping point in mortgage amortization?

On a standard 30-year fixed loan at 6.5%, the "tipping point" (where monthly principal payment exceeds interest payment) occurs around Year 16.