EMI vs SIP: Should You Repay Your Loan Faster or Start Investing?
By UtilCube Editorial Team · Updated
If you have a running home loan at 8.5% interest and you come into ₹10,000 extra per month, should you make a loan prepayment — or start a SIP in an equity mutual fund? This is one of the most common personal finance dilemmas in India, and the answer depends on a few key numbers.
The Simple Rule of Thumb
Compare your loan interest rate with your expected investment return (after tax). If your loan charges more than what your investment earns, prepay the loan. If your investment earns more, invest.
| Scenario | Loan Rate | Expected Return | Better Option |
|---|---|---|---|
| Personal loan | 14–18% | 12% (equity SIP, long term) | Prepay loan |
| Car loan | 9–11% | 12% | Could go either way |
| Home loan | 8–9% | 12% | SIP (with tax benefit on loan) |
| Education loan | 8–10% | 12% | SIP (80E deduction helps) |
Why Home Loans Are Different
Home loans are the only loan where interest payment gives you a tax deduction:
- Section 24(b): Up to ₹2 lakh deduction on interest paid (self-occupied property)
- Section 80C: Up to ₹1.5 lakh deduction on principal repaid
If you are in the 30% tax bracket, an 8.5% home loan effectively costs you about 5.9% after tax benefits. Since equity SIPs have historically returned 10–12% over 10+ years, investing the surplus makes more mathematical sense. Use our EMI calculator to see how much interest you are actually paying.
A Practical Framework
- Always close high-interest debt first. Credit card balances (36%+), personal loans (14–18%), and any debt above 12% should be the top priority. No investment consistently beats these rates.
- Build an emergency fund. Before aggressively prepaying or investing, keep 3–6 months of expenses in a liquid fund or savings account.
- Split the surplus. If you have a home loan at 8.5% and ₹20,000 extra, consider putting ₹10,000 toward loan prepayment and ₹10,000 into a SIP. This reduces both your loan tenure and builds wealth simultaneously.
- Review annually. Loan rates change (especially floating-rate home loans). SIP returns vary. Rebalance your split each year.
What the Numbers Look Like
A ₹50 lakh home loan at 8.5% for 20 years has an EMI of about ₹43,391. Total interest paid over the tenure: roughly ₹54 lakh — more than the loan itself. Even a ₹5,000/month prepayment can save you ₹12–15 lakh in total interest and cut 4–5 years off the tenure.
Meanwhile, a ₹5,000/month SIP earning 12% CAGR for 20 years grows to roughly ₹49 lakh — with only ₹12 lakh invested. The compounding works in your favour over long periods.
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