Decision tool

Mortgage Amortization Schedule Calculator

Inspect every monthly payment, balance step-down, and interest charge instead of relying on summary numbers alone

Loan Details

Adjust your mortgage parameters

$400,000
$50,000$2,000,000
20%
0%50%

Payment Frequency

Standard monthly payments

MonthlyBi-Weekly
%
yrs
Loan Amount
$320,000
Down Payment
$80,000

Amortization Schedule

360 total payments

YearPaymentPrincipalInterestPMILTVBalance
Year 1
$24,271$3,577$20,695-79.1%$316,423
Year 2
$24,271$3,816$20,455-78.2%$312,607
Year 3
$24,271$4,072$20,200-77.1%$308,535
Year 4
$24,271$4,345$19,927-76.0%$304,191
Year 5
$24,271$4,636$19,636-74.9%$299,555
Year 6
$24,271$4,946$19,325-73.7%$294,609
Year 7
$24,271$5,277$18,994-72.3%$289,332
Year 8
$24,271$5,631$18,641-70.9%$283,701
Year 9
$24,271$6,008$18,264-69.4%$277,694
Year 10
$24,271$6,410$17,861-67.8%$271,284
Year 11
$24,271$6,839$17,432-66.1%$264,444
Year 12
$24,271$7,297$16,974-64.3%$257,147
Year 13
$24,271$7,786$16,485-62.3%$249,361
Year 14
$24,271$8,308$15,964-60.3%$241,053
Year 15
$24,271$8,864$15,407-58.0%$232,189
Year 16
$24,271$9,458$14,814-55.7%$222,732
Year 17
$24,271$10,091$14,180-53.2%$212,641
Year 18
$24,271$10,767$13,505-50.5%$201,874
Year 19
$24,271$11,488$12,784-47.6%$190,386
Year 20
$24,271$12,257$12,014-44.5%$178,129
Year 21
$24,271$13,078$11,193-41.3%$165,051
Year 22
$24,271$13,954$10,317-37.8%$151,097
Year 23
$24,271$14,888$9,383-34.1%$136,208
Year 24
$24,271$15,886$8,386-30.1%$120,323
Year 25
$24,271$16,949$7,322-25.8%$103,373
Year 26
$24,271$18,085$6,187-21.3%$85,289
Year 27
$24,271$19,296$4,976-16.5%$65,993
Year 28
$24,271$20,588$3,683-11.4%$45,405
Year 29
$24,271$21,967$2,305-5.9%$23,438
Year 30
$24,271$23,438$833-0.0%$0

About This Tool

Schedule analysis

Inspect each payment instead of relying on summary numbers alone

This version puts the amortization table at the center so you can see when principal starts accelerating, when PMI drops, and how extra payments change the balance path.

Typical Use

1-2 minutes

Best For

Borrowers comparing payoff timing, interest front-loading, and month-by-month balance changes

Main Output

A detailed amortization timeline with balance, principal, and interest by payment

Built Around

Standard mortgage math and planning assumptions

What to prepare
  • Home price or loan amount, down payment, rate, and term
  • Optional PMI, taxes, insurance, and extra principal assumptions
What you get back
  • Month-by-month payment split and remaining balance
  • A cleaner view of payoff timing, PMI drop-off, and early-payoff leverage
Why trust this view
  • Uses the same amortization math as the main mortgage calculator
  • Shows the full balance path so you can audit when the savings actually happen
  • Useful for planning, but lender servicing rules can still affect real-world timing

Source notes and methodology details are available on our references page.

Amortization TableBalance PathPMI Timeline

Industry-Standard Calculations

Our calculations follow the Truth in Lending Act (TILA) guidelines and use standard financial formulas employed by major lending institutions.

Monthly Payment Calculation

M = P[r(1+r)^n]/[(1+r)^n-1]

Where M = monthly payment, P = principal loan amount, r = monthly interest rate, n = number of payments

Amortization Schedule

Standard declining balance method

Each payment is split between interest (calculated on remaining balance) and principal reduction

APR Estimation

Includes interest + fees over loan term

Annual Percentage Rate calculations include all financing charges as required by Truth in Lending Act (TILA)

MortgageCalcMaster

About MortgageCalcMaster

Content is published under the MortgageCalcMaster editorial team workflow, currently led by the site operator, reviewed against public mortgage and consumer-finance sources, and updated when assumptions, formulas, or product behavior materially change.

Last reviewed: March 2026. All calculators and guides are intended for education and planning. They do not replace lender disclosures or advice from licensed professionals. Learn more about our editorial process

How to Use Amortization Schedule Calculator

1

Enter the home price, down payment, rate, and term to build the baseline schedule.

2

Open the Amortization tab to review each payment row in sequence.

3

Add PMI, taxes, insurance, or extra principal to see how the schedule shifts under more realistic ownership costs.

4

Use the table to check when balance declines meaningfully, when PMI ends, and how much earlier payoff happens after extra payments.

Key Terms Explained

Amortization Schedule
The full sequence of mortgage payments showing principal, interest, and remaining balance over time.
Principal
The amount of each payment that reduces the loan balance.
Interest
The financing cost charged on the remaining balance each period.
Remaining Balance
What is still owed on the mortgage after each payment posts.

Pro Tips

  • Scan the first few years closely because that is where extra principal usually has the biggest interest impact.
  • Use the schedule to validate refinance timing, PMI removal timing, and payoff strategy instead of guessing from headline totals.
  • If you compare two loans, keep taxes and insurance assumptions aligned so the schedule difference stays focused on financing.

Important Note

This calculator provides estimates based on standard formulas. Actual loan terms may vary based on your credit score, lender policies, and market conditions. Always consult with a qualified mortgage professional before making financial decisions.

Related Guides

Use these guides to understand what the schedule is telling you and what to do with it next.

Related Tools

Keep the payoff analysis moving with adjacent calculators built from the same mortgage math.

FAQ

Mortgage Amortization Schedule Calculator FAQ

These answers explain the assumptions behind the calculator so users can interpret the output with the right context.

What does an amortization schedule show?

It shows each payment in order, including how much goes to principal, how much goes to interest, and what balance remains after that payment posts.

Why is the early schedule so interest-heavy?

Because interest is charged on the largest balance at the start of the loan. As the balance falls, the interest portion shrinks and more of the payment reaches principal.

Do extra payments change the amortization schedule immediately?

Yes. Extra principal reduces the balance sooner, which lowers future interest and changes every later row in the schedule.