Prepayment sounds simple: put extra money into your loan, owe less, pay less interest. But the timing, method, and which loan to target first can mean the difference between saving ₹1 lakh and saving ₹4 lakh on the same ₹1 lakh prepayment. Here is the exact framework.
Why early prepayment saves so much more
EMI has two parts: principal and interest. In early months, 70–80% of your EMI goes to interest. A ₹50 lakh home loan at 8.5% for 20 years: your first EMI of ₹43,366 has only ₹13,583 going to principal. The remaining ₹29,783 is pure interest to the bank.
When you prepay ₹1 lakh in Year 1, you are knocking out ₹1 lakh of principal at a point when it removes roughly ₹3–4 lakh in future interest (because that ₹1 lakh would have accumulated 20 years of compound interest at 8.5%).
Prepay ₹1 lakh in Year 15 and it removes only ₹50,000–₹60,000 of future interest because most of the interest was already paid in the first 14 years.
Every ₹1 lakh prepaid in Year 1 saves approximately ₹3.5 lakh in lifetime interest on a 20-year home loan at 8.5%. The same ₹1 lakh in Year 10 saves only ₹1.1 lakh. Time is your most powerful weapon — and it only works in one direction.
Reduce tenure vs reduce EMI: which wins?
When you make a prepayment, most banks give you two choices:
- Reduce tenure: Keep EMI same, reduce loan end date. Maximum interest saving.
- Reduce EMI: Keep tenure same, reduce monthly payment. More monthly breathing room.
| Choice | ₹1 lakh prepayment on ₹50L home loan | Interest saved | Best for |
|---|---|---|---|
| Reduce tenure | 20 years → 19 years 4 months | ₹2.4 lakh | Aggressive savers, long tenure loans |
| Reduce EMI | EMI ₹43,366 → ₹42,520 | ₹1.1 lakh | Cash flow relief needed, short tenure |
EMI Saathi recommendation: Always reduce tenure first. The interest saving is 2x higher. Only switch to EMI reduction if you genuinely need the monthly cash flow relief and can reinvest the savings into a SIP or further prepayment.
Home loan prepayment: lender rules you must know
Part prepayment: Most banks allow part prepayment of up to 25% of the principal outstanding per year without charges. This applies to floating rate home loans since March 2014 (RBI directive). Fixed rate portions may attract 2% foreclosure charge.
Full prepayment: For floating rate portion, no charges after lock-in (typically 12–18 months). For fixed rate portion: 2–3% of outstanding principal.
Minimum amount: Most banks require minimum prepayment of ₹10,000–₹25,000 per transaction.
Timing: Part prepayment is most effective in the first 7–8 years of a home loan when interest portion of EMI is highest.
Personal loan prepayment: when it makes sense
Personal loans at 12–18% are the highest-cost consumer debt. Prepayment delivers massive savings — but check the fine print first.
| Bank | Foreclosure Charge | Lock-in Period |
|---|---|---|
| HDFC Personal Loan | 4% + GST | 12 months |
| ICICI Personal Loan | 3% + GST | 12 months |
| SBI Personal Loan | Nil | None |
| Tata Capital | 2% + GST | 6 months |
| Bajaj Finserv | Nil (after 1 month) | 1 month |
Key insight: If you have a personal loan at 15%+ with 2+ years remaining, check the foreclosure charge. A 3% charge on ₹5 lakh is ₹15,000. If you save ₹60,000 in interest, the math works. Always calculate before prepaying.
Car loan prepayment: is it worth it?
Car loans at 8–10% are cheaper than personal loans. Here is the prepayment hierarchy:
- Above 14%: Personal loans, credit card outstanding — prepay aggressively
- 10–14%: High-rate personal loans, some NBFC loans — prepay if cash allows
- 8–10%: Car loans, some home loans at floating — prepay if you have surplus after emergency fund
- Below 8%: Government-backed loans, educational loans — no rush to prepay
Which loan to prepay first (debt avalanche method)
The most effective strategy: list all loans by interest rate (highest first), throw every spare rupee at the highest-rate loan while making minimum payments on all others. Once that loan is gone, roll the entire payment to the next.
Example: Three loans — personal loan at 17%, car loan at 9.5%, home loan at 8.5%. You have ₹30,000 extra this year. Put all ₹30,000 into the personal loan. Once it is cleared, you have ₹30,000 + the old personal loan EMI freed up. Now attack the car loan.
Yearly prepayment plan for salaried employees
January: Use annual bonus to make one significant prepayment (₹50,000–₹1 lakh)
March: Tax refund, salary raise, or performance bonus — put 50% into loan prepayment
June: Festival advance or extra freelance income — half to enjoyment, half to loan
December: Year-end bonus — one full EMI amount as extra prepayment
Target: Prepay at least one full EMI extra per year. On a ₹50 lakh home loan, this single extra payment per year cuts 3–4 years off the loan and saves ₹5–7 lakh in total interest.
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