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Property finance

Home Loan Amortization and Extra-Payment Calculator

Reviewed by Finin2min Editorial Desk · Last reviewed 11 August 2026

Calculate EMI, total interest, revised payoff period and savings from a recurring extra monthly payment.

Loan assumptions

Scheduled EMI
—
Interest saved
—
Original total interest—
Revised payoff period—
Revised total interest—
Calculation guidance will appear here.

How This Is Calculated

This calculator computes your EMI using the standard loan amortization formula, then simulates the loan schedule month by month — each EMI first covers the interest accrued on the outstanding balance, with the remainder reducing principal. Adding extra/prepayment amounts reduces the outstanding principal faster, cutting the total interest paid and/or shortening the loan tenure, depending on which strategy you choose.

Frequently Asked Questions

Why does most of my early EMI go toward interest, not principal? ▼
In the early years of a loan, the outstanding balance is highest, so the interest portion of each EMI (interest = outstanding balance × monthly rate) is largest. As the balance reduces over time, a growing share of each EMI goes toward principal instead — this is standard amortization behavior, not something specific to any one lender.
Does prepaying my home loan reduce EMI or tenure? ▼
It depends on what you choose with your lender. Reducing tenure (keeping EMI the same, paying off faster) saves more total interest than reducing EMI (keeping tenure the same, lowering the monthly payment) for the same prepayment amount, because the loan is outstanding for a shorter total period.
Is there a penalty for prepaying a home loan? ▼
For floating-rate home loans to individual borrowers, RBI rules generally prohibit prepayment penalties. Fixed-rate loans may still carry prepayment charges — check your specific loan agreement.

Primary sources & verification — Calculator assumptions

Reviewed: 22 August 2026.

This amortisation tool models contractual cash flows from user inputs; it is not a lender statement. Floating-rate resets, day-count conventions, fees, insurance, part-payment rules and lender-specific re-amortisation can change actual results.

Practical verification checklist

Primary-source checkpoint

Use the controlling statute, notified rule/instrument, official portal and later authoritative treatment for the relevant date. This page remains an educational/professional reference.

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Monthly reducing-balance model, interest = opening balance × annual nominal rate / 12, payments made at month-end. No insurance, processing charges, prepayment penalties, daily accrual, holidays or lender rounding. RBI borrower options depend on loan terms and applicable rules. For education and planning; independently verify financial decisions.

Last reviewed: 15 July 2026

Methodology, assumptions and sources

Scope: Generates a full year-wise and month-wise amortisation schedule for a home loan, and computes the interest saved and tenure reduction from optional extra/prepayments.

Calculation logic

  1. Base schedule: apply the standard reducing-balance EMI formula, then for each month compute interest on the opening balance, apply the principal component to reduce the balance, and roll forward.
  2. Extra-payment scenario: at each month/point where an extra payment is entered, reduce the outstanding principal by that amount immediately, then continue the amortisation schedule (either at the same EMI, resulting in a shorter tenure, or at a reduced EMI for the same tenure, per the option selected).
  3. Interest saved = Total interest under the base schedule − Total interest under the extra-payment schedule. Tenure reduction = Base tenure in months − Extra-payment-scenario tenure in months.

Inputs and assumptions

Exclusions and edge cases

Sources

Review status: reviewed and approved by CA Nikhil Gupta on 18 July 2026.

© 2026 Finin2min · Educational decision support · Validate assumptions and applicable law.

Guides that use this calculator

Background, worked examples and the rules behind these numbers.