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.

⚠ The compound effect window

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:

Choice₹1 lakh prepayment on ₹50L home loanInterest savedBest for
Reduce tenure20 years → 19 years 4 months₹2.4 lakhAggressive savers, long tenure loans
Reduce EMIEMI ₹43,366 → ₹42,520₹1.1 lakhCash 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.

BankForeclosure ChargeLock-in Period
HDFC Personal Loan4% + GST12 months
ICICI Personal Loan3% + GST12 months
SBI Personal LoanNilNone
Tata Capital2% + GST6 months
Bajaj FinservNil (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:

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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