- A ₹50 lakh loan at 8.5% for 20 years costs ₹54.1 lakh in interest. In year one, 81% of each EMI is interest.
- Paying ₹5,000 a month extra saves ₹13.9 lakh of interest and ends the loan 4.4 years early.
- After a lump-sum prepayment, keep the EMI and cut the tenure. With ₹5 lakh prepaid, that saves about ₹9.8 lakh more than lowering the EMI.
- Prepaying is like earning your loan rate, guaranteed. Investing wins only if it earns clearly more after tax. In our example the line is between 8.5% and 10% a year.
A home loan is usually the biggest number in a family’s finances, and also the slowest-moving. EMIs go out every month for twenty years, and for the first few years they barely dent the loan. That is why the question comes up the moment a bonus lands: should this go into the loan, or into investments?
First, see where your EMI goes
In the first year you pay ₹5.2 lakh in EMIs, and only ₹99,511 of it reduces the loan. The other ₹4.21 lakh is interest.
Open this loan →This is the key to everything below. Early in a loan, the balance is high, so interest eats most of each EMI. Any extra rupee you pay goes straight to the principal, and it stops interest from building on that rupee for all the remaining years.
What small, regular prepayments do
Add a fixed extra amount to every EMI and the effect compounds in your favour:
| Extra each month | Loan ends in | Total interest | Interest saved |
|---|---|---|---|
| Nothing | 20 years | ₹54.1 L | — |
| ₹5,000 | 15.6 years | ₹40.2 L | ₹13.9 L |
| ₹10,000 | 12.9 years | ₹32.4 L | ₹21.8 L |
₹5,000 a month is about 11% more than the EMI, and it takes more than four years off the loan.
Try a monthly prepayment →After a lump sum: cut the EMI or the tenure?
When you prepay a lump sum, say a ₹5 lakh bonus in the second year, the bank usually asks whether you want a smaller EMI or a shorter loan. They sound similar. They are not.
Cutting the tenure saves about three times as much. A lower EMI feels better each month, but the loan keeps charging interest for the full 20 years.
See the lump-sum effect →Choose a lower EMI only if the monthly payment is genuinely straining your budget. If it isn’t, keep it and let the loan finish early.
The real question: prepay, or invest the same money?
Prepaying an 8.5% loan is like earning 8.5% a year, guaranteed and tax-free. In the new tax regime, interest on a self-occupied home gives no tax deduction, so nothing reduces that effective rate. Investing can earn more, but it is not guaranteed.
To compare fairly, imagine two people with the same loan and the same extra ₹5,000 a month for 20 years:
- Prepayer: adds ₹5,000 to every EMI. The loan ends after 15.6 years. For the last 4.4 years, they invest the whole ₹48,391 they were paying.
- Investor: pays the normal EMI for 20 years and invests ₹5,000 a month in an equity fund the whole time.
Both have no loan at the end. Here is what each has invested by year 20, after tax on equity gains, at three possible yearly returns:
| Return assumed | Prepayer | Investor | Better by |
|---|---|---|---|
| 8.5% | ₹30.5 L | ₹28.1 L | Prepayer +₹2.3 L |
| 10% | ₹31.4 L | ₹33.2 L | Investor +₹1.9 L |
| 12% | ₹32.6 L | ₹41.7 L | Investor +₹9.2 L |
So investing comes out ahead only if it earns more than about 9.3% a year after costs; below that, prepaying wins. Over twenty years, Indian equity has often done better than that, but not always, and not in a straight line. A bad decade near the end can erase the gap.
A common middle path: many people split the money, for example half to prepayment and half to a SIP. It lowers the loan risk and still gives the investments time to grow. Run both halves in the calculators to see what it does for you.
When prepaying is the clear choice
- Your loan rate is high, 9.5% or more.
- You are in the new tax regime, so the interest gives you no tax benefit.
- You don’t have the stomach for market falls, or you would stop a SIP when markets drop.
- You want the loan gone before a known event: retirement, a child’s college, a career break.
When investing makes more sense
- Your loan rate is low, and you have twenty years or more to invest.
- You are in the old regime and use the full ₹2 lakh home-loan interest deduction.
- You have no emergency fund yet. Build that first: money in the loan can’t be taken back out easily.
Good to know: for floating-rate home loans taken by individuals, RBI rules don’t allow banks to charge a prepayment penalty. Fixed-rate loans can carry one, so check your loan agreement.
Frequently asked questions
Is it better to reduce EMI or tenure after prepaying a home loan?
Reducing the tenure saves far more interest. In our ₹50 lakh example, a ₹5 lakh prepayment saves about ₹14.6 lakh with a shorter tenure and only ₹4.8 lakh with a lower EMI.
Should I prepay my home loan or invest in mutual funds?
Prepaying earns your loan rate with no risk. Investing can earn more over long periods but is not guaranteed. In our example, investing came out ahead only when it earned more than about 9.3% a year.
Is there a penalty for prepaying a home loan?
Banks are not allowed to charge a prepayment penalty on floating-rate home loans to individuals. Fixed-rate loans may carry a charge; check your agreement.
When is the best time to prepay a home loan?
Earlier is more powerful, because interest is highest when the balance is highest. A prepayment in the first few years saves much more than the same amount near the end.
What would prepaying save on your loan?
Enter your loan, then add a monthly or one-time prepayment.
Open the EMI calculator →Loan figures assume a fixed 8.5% rate with monthly reducing balance and exclude fees and insurance. Investment returns are assumptions, not predictions; returns are not guaranteed and this is not investment advice. Equity gains are taxed at 12.5% above ₹1.25 lakh a year, as in the SIP calculator.