Why Prepayment Works — The Math
In early years of a home loan, over 70% of your EMI goes toward interest, not principal. On a ₹50L loan at 8.5% for 20 years (EMI: ₹43,391), Month 1 split is:
| Month | EMI | Interest (₹) | Principal (₹) | Balance (₹) |
|---|---|---|---|---|
| 1 | ₹43,391 | ₹35,417 | ₹7,974 | ₹49,92,026 |
| 12 | ₹43,391 | ₹34,885 | ₹8,506 | ₹49,05,000 |
| 60 | ₹43,391 | ₹32,203 | ₹11,188 | ₹45,21,000 |
| 120 | ₹43,391 | ₹26,840 | ₹16,551 | ₹37,66,000 |
| 180 | ₹43,391 | ₹17,744 | ₹25,647 | ₹24,94,000 |
Prepaying early attacks the principal when it's highest — multiplying the interest saving effect.
Prepayment Impact — Real Scenarios on ₹50L Loan at 8.5%
| Prepayment | When | Option | Interest Saved | Tenure Reduced |
|---|---|---|---|---|
| ₹2 lakh | Year 2 | Reduce tenure | ~₹7.2 lakh | ~14 months |
| ₹5 lakh | Year 3 | Reduce tenure | ~₹19.5 lakh | ~4 years |
| ₹10 lakh | Year 5 | Reduce tenure | ~₹25 lakh | ~6 years |
| ₹1 extra EMI/year | Every year | Reduce tenure | ~₹14 lakh | ~3.5 years |
Reduce Tenure vs Reduce EMI — Which Is Better?
| Strategy | Monthly Cash Flow | Total Interest | Best When |
|---|---|---|---|
| Reduce Tenure | Same EMI | Much less | Income is stable, want max saving |
| Reduce EMI | EMI drops | Less (but not as much) | Monthly cash flow is tight |
On a ₹50L loan at 8.5%, reducing tenure saves 1.8x more interest than reducing EMI for same prepayment. Always choose reduce tenure when possible.
Best Sources of Prepayment Money
- Annual bonus — Most effective: use full bonus every April
- Increment hike — When salary increases, maintain old spending, put extra toward prepayment
- Tax refund — ITR refunds of ₹20,000–₹1,00,000 commonly received
- One extra EMI per year — On January 1st, make one extra EMI. Over 20 years = ₹14L saved
- Maturing investments — FDs, NSC, LIC maturity proceeds
💳 Calculate Your Prepayment Savings
Calculate Savings →Q: Is there a penalty for home loan prepayment?
RBI mandates ZERO prepayment penalty on floating rate home loans taken by individuals. You can prepay any amount at any time for free. Fixed rate loans may charge 2-3% on prepaid amount. Always check your loan sanction letter. If you have a floating rate loan, prepay freely.
Q: Should I invest or prepay my home loan?
Compare loan rate (8.5%) vs investment return. Equity SIP historically gives 12%, making investment mathematically better. However: prepayment gives guaranteed 8.5% return; investments carry risk. Recommended split: prepay 40-50% of surplus (guaranteed return + peace of mind) + invest rest in SIP.
⚠️ Educational purposes only. Consult a qualified financial advisor for personalised advice.