Calculate prepayment savings
Default: ₹45 lakh outstanding, 8.5% rate, 18 years left, ₹5 lakh prepayment.
Why early prepayments save disproportionate interest
On an Indian reducing-balance home loan, your EMI in the early years is 70–85% interest. Only as principal gets paid down does the interest component shrink. A ₹5 lakh prepayment in year 3 of a 20-year loan saves far more interest than the same ₹5 lakh prepayment in year 15 — because year 3 outstanding is higher and has more remaining years to compound.
The math: after prepayment, new outstanding = old outstanding − lump sum. If you keep the EMI fixed and let tenure shrink, the new tenure is n_new = log(EMI / (EMI − new_P × r)) / log(1+r). Interest saved = original_total_interest − new_total_interest on the remaining schedule.
Floating-rate home loans in India have zero prepayment penalty by RBI mandate. Fixed-rate loans typically charge 2–4% of the prepaid amount. Always confirm with your lender before prepaying.
Impact of prepayment timing (₹50L loan at 8.5% for 20 years)
| Lump sum | Prepaid in year | Interest saved | Tenure reduced |
|---|---|---|---|
| ₹5 lakh | Year 3 | ~₹8.5 lakh | ~16 months |
| ₹5 lakh | Year 10 | ~₹3.9 lakh | ~10 months |
| ₹10 lakh | Year 3 | ~₹16 lakh | ~34 months |
| ₹25 lakh | Year 3 | ~₹33 lakh | ~94 months |
Figures rounded. Actual savings depend on exact month of prepayment and whether tenure or EMI is reduced.
Frequently asked
Is there a penalty for prepaying a home loan in India?
For floating-rate home loans taken by individual (non-commercial) borrowers, RBI rules prohibit prepayment penalties — zero charges. For fixed-rate loans, penalty is typically 2–4% of the prepaid amount. Check your sanction letter; if your loan is floating-rate, go ahead and prepay.
Should I prepay my home loan or invest the lump sum?
Compare post-tax returns. At 8.5% home loan rate with full Section 24 + 80C benefit, effective post-tax borrowing cost is about 6.0–6.5% for a 30% bracket taxpayer. Equity mutual funds have historically returned 11–14% pre-tax (9–12% post-LTCG). Financially, investing usually wins. But prepaying reduces psychological debt and sleep-at-night risk. The rational answer is often mixed: keep emergency fund + prepay, invest the balance.
Should I reduce EMI or reduce tenure when I prepay?
Interest savings are mathematically identical either way, because the formula only cares about outstanding principal × rate × time. But reducing tenure gets you debt-free sooner; reducing EMI increases current cash-flow. Reduce tenure if you’re early in the loan; reduce EMI if you have cash-flow pressure or want to redirect the released EMI to higher-return investments.
Can I prepay partially every month as a systematic plan?
Yes — “principal step-up” is allowed by all major Indian home loan lenders. You can either (a) set up an auto-debit for a higher-than-required EMI every month, or (b) make a fixed annual prepayment from your annual bonus. A ₹1 lakh/year systematic prepayment on a ₹50 lakh / 20-year loan cuts total interest by about ₹12 lakh and reduces tenure by 4–5 years.
Will prepayment affect my Section 80C and Section 24 benefits?
Prepayment reduces future interest paid, which reduces your Section 24 deduction going forward (capped at ₹2 lakh/year anyway). Section 80C principal repayment is not affected — it still caps at ₹1.5 lakh/year. Net tax effect is usually small relative to interest saved. Use our tax benefit calculator to model the combined effect.