Skip to content
epitometool

Amortization schedule calculator

Finance & money

Calculate EMI and month-wise principal-interest split for fixed-rate loans.

Updated

Loan inputs

Monthly EMI

4339.12

First 12 months

MonthPrincipalInterestBalance
1797.453541.67499202.55
2803.103536.02498399.45
3808.793530.33497590.67
4814.523524.60496776.15
5820.293518.83495955.86
6826.103513.02495129.77
7831.953507.17494297.82
8837.843501.28493459.98
9843.773495.34492616.21
10849.753489.36491766.46
11855.773483.35490910.69
12861.833477.28490048.85

Quick start

How to use amortization-schedule

Enter input and view computed output.

  1. Step 1
    Enter input

    Paste or type data.

  2. Step 2
    Compute

    Run the analysis instantly.

  3. Step 3
    Use output

    Copy result for workflow use.

In-depth guide

Amortization: how each loan payment splits into interest and principal

An amortized loan is repaid in equal periodic instalments (EMIs), but the make-up of each instalment shifts over time — early payments are mostly interest, later ones mostly principal. This calculator computes the EMI and shows that split month by month, entirely in your browser.

The EMI formula

The instalment is fixed by three inputs: the principal P, the monthly interest rate r (annual rate divided by 12), and the number of months n. EMI = P × r × (1 + r)^n ÷ ((1 + r)^n − 1). Because the rate applies to the shrinking outstanding balance, the interest portion falls every month while the principal portion rises to keep the total constant.

How to use this tool

  1. Enter the loan principal, the annual interest rate, and the tenure in months or years.
  2. Read the EMI and the month-wise breakdown of interest versus principal.
  3. Compare scenarios by changing the rate or tenure to see how total interest moves.

Reading the schedule

In the first year of a long mortgage, the bulk of every EMI is interest — which is why early extra repayments cut the most total interest. A shorter tenure raises the EMI but slashes lifetime interest; a longer tenure does the reverse. The schedule makes that trade-off concrete instead of abstract.

Privacy and a caveat

This is an estimate for planning. Real loans add processing fees, insurance, taxes and rate resets your lender's official schedule will reflect.

All calculation happens locally in your browser — the numbers you enter are never uploaded. Use the figures to compare options, then confirm exact amounts with your lender.

Common pitfalls

  • Confirm rates, compounding frequency, tax year, dates, and rounding before acting on the result.
  • Fees, penalties, inflation, and local rules can make real outcomes differ from simple formulas.
  • Treat results as guidance, not financial, tax, legal, or investment advice.

Frequently asked questions

What is amortization?

It is the month-by-month split of each fixed EMI into its interest and principal parts as the loan is paid down.

Can I use this for home loans?

Yes. Enter the principal, annual rate and tenure to preview the EMI and the interest/principal breakdown.

Why is early-payment interest so high?

Interest is charged on the outstanding balance, which is largest at the start. As the balance falls, the interest share of each EMI shrinks and the principal share grows.

How does tenure affect total interest?

A shorter tenure means a higher EMI but much less total interest; a longer tenure lowers the EMI but increases lifetime interest.

Do extra repayments help?

Yes. Paying extra early, when payments are interest-heavy, reduces the principal sooner and cuts the most total interest.

Is this an exact figure from my bank?

No. It is a planning estimate. Real loans add fees, insurance, taxes and possible rate resets your lender's official schedule reflects.

Keep exploring

More tools you'll like

Hand-picked utilities that pair well with the one you're on — all free, client-side, and zero-signup.