Save money3 min read · Updated 17 October 2026
Prepay your home loan or invest in a SIP? How to decide
Is it better to prepay a home loan or invest the money? A simple test: what an investment must earn after tax and risk to beat your loan rate, with numbers.
A simple test
Compare two numbers: your loan rate, and what you expect an investment to earn after tax. Prepaying earns your loan rate with certainty. Investing may earn more, or less, and the result is not certain. If the loan rate is high (say above 9%), prepaying is a strong choice. If it is low and you have a long time, investing may win, but only if you can hold through falls.
What ₹5 lakh could become
| Annual return | After 10 years | After 15 years |
|---|---|---|
| 6% | ₹8,95,424 | ₹11,98,279 |
| 8.5% | ₹11,30,492 | ₹16,99,871 |
| 10% | ₹12,96,871 | ₹20,88,624 |
| 12% | ₹15,52,924 | ₹27,36,783 |
The 8.5% row is what prepaying a loan at 8.5% is worth. Returns above it are not guaranteed, and tax reduces them. Use the Prepay or invest calculator to try your own numbers.
When prepaying wins
- Your loan rate is high compared with safe returns.
- You want a lower stress level and to be debt-free sooner.
- You are near retirement, when a loan is hard to carry.
When investing wins
- Your loan rate is low and you have a long time horizon.
- You are getting a tax benefit on the interest, and you can hold through market falls.
- You have no emergency fund yet. Build that first, before either.
See the tax side in home loan tax benefits.
Common questions
Should I prepay my home loan or invest in mutual funds?
Prepaying earns your loan rate with certainty. Investing may earn more but is not guaranteed and is taxed. Compare after tax and risk, and keep an emergency fund first.
Is prepaying a home loan a good investment?
It is a guaranteed return equal to your loan rate, with no tax on the interest you save. That is hard to match with safe investments when the rate is high.
Can I do both?
Yes. Many people prepay part of their surplus and invest the rest.