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Loan Duration Reducer — Calculations & Slabs for FY 2026-27

Enter your current loan details and a prepayment amount to see exactly how many months are cut from your tenure and how much interest you save.

1. Loan & Payment Inputs

Frequently Asked Questions (FAQ)

How does paying an extra amount reduce my tenure?

When you pay more than your scheduled EMI, the entire extra payment is applied directly to your loan's outstanding principal balance. Since your principal shrinks faster, less interest accumulates in all subsequent months, accelerating your path to zero balance. This ensures full compliance with the latest regulations, allowing you to estimate values correctly and avoid common filing errors.

Is there a penalty for making extra monthly payments?

In India, the RBI has banned foreclosure and part-prepayment penalties on all individual floating-rate home, car, and personal loans. However, fixed-rate loans or loans taken by non-individual entities may still attract prepayment charges (typically 2% to 4%). This ensures full compliance with the latest regulations, allowing you to estimate values correctly and avoid common filing errors.

Should I choose a shorter loan tenure initially or pay extra later?

Choosing a longer tenure with voluntary prepayments is often safer. It keeps your mandatory monthly commitment low, protecting you during financial emergencies, while still giving you the flexibility to pay off the loan early. This ensures full compliance with the latest regulations, allowing you to estimate values correctly and avoid common filing errors.

Does this calculator support home loans with daily compounding?

Most banks in India calculate interest on a monthly reducing balance method. This calculator simulates the standard monthly reducing balance method, which matches commercial banks like SBI, HDFC, and ICICI. This ensures full compliance with the latest regulations, allowing you to estimate values correctly and avoid common filing errors.

Where can I verify the source data for this calculator?

You can verify the values against the official notifications listed in our data sources section at the bottom of the page.

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About This Calculator

Target Audience: Salaried taxpayers, investors & retirees planning Indian tax & wealth growth

What Does This Calculator Do?

This calculator computes the impact of adding a fixed extra amount to your monthly home, car, or personal loan payment. It shows you exactly how many years you can shave off your loan tenure and how much money you will save on total interest.

engine_type: compiled | format: inr

How to Use It

  1. Loan Amount (₹): Enter the total loan amount borrowed or current outstanding balance.
  2. Interest Rate (%): Enter the annual interest rate of the loan.
  3. Original Tenure (Years): Enter the original tenure in years.
  4. Extra Monthly Payment (₹): Enter the extra amount you plan to pay each month on top of your standard EMI.

The Logic Explained Simply

  • The Concept: When you make extra monthly payments, the entire extra amount goes directly toward reducing your loan's outstanding principal rather than paying interest. This accelerates the compounding reduction of your loan balance, resulting in a much shorter tenure.
  • The Formula:

Original EMI = [Principal × r × (1+r)^N] / [(1+r)^N - 1]

New Monthly Payment = Original EMI + Extra Payment

New Tenure (months, n) = -log(1 - (Principal × r) / New Monthly Payment) / log(1 + r)

Interest Saved = (Original EMI × N - Principal) - (New Monthly Payment × n - Principal)

Real-World Calculation Breakdown

Suppose you take a home loan of ₹30,00,000 at an interest rate of 8.5% for an original tenure of 20 years (240 months). You decide to pay an extra ₹5,000 every month on top of your normal EMI.

  • Monthly interest rate (r) = 8.5 / 12 / 100 = 0.007083
  • Original EMI = ₹26,035
  • New Monthly Payment = ₹26,035 + ₹5,000 = ₹31,035
  • Solving for new tenure n: n = -log(1 - (30,00,000 × 0.007083) / 31,035) / log(1.007083) ≈ 173.8 months (approx 14.5 years)
  • Years Saved = 20 - 14.5 = 5.5 Years
  • Original Total Interest = (₹26,035 × 240) - ₹30,00,000 = ₹32,48,400
  • New Total Interest = (₹31,035 × 173.8) - ₹30,00,000 = ₹23,93,883
  • Total Interest Saved = ₹32,48,400 - ₹23,93,883 = ₹8,54,517

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