Which law applies. Section numbers on this page are those of the Income-tax Act, 2025, which took effect on 1 April 2026 and governs tax year 2026-27 onwards. Section 24(b) of the Income-tax Act, 1961 corresponds to section 22(1)(b) of the 2025 Act, with the interest limit in section 22(2).
Loans & Property
Home Loan Prepayment vs SIP
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Use surplus cash to close the loan faster or invest in SIP? The post-tax math usually favours one.
What Home Loan Prepayment and Investing the Same Money Actually Mean
Home Loan Prepayment. Paying extra towards your outstanding principal. It does not earn a return — it avoids one, by removing future interest you would otherwise have paid. The saving is certain and equals your loan rate.
Investing the Same Money. Putting the same surplus into a mutual fund instead, keeping the loan running. The return is uncertain, and you continue paying interest on the full balance meanwhile.
The usual framing — “loan rate versus expected market return” — is incomplete, because it compares a guaranteed saving with an uncertain return as if they were the same kind of number. It also ignores tax, which since the new regime became the default has changed this calculation for a great many borrowers.
How this page differs. This page compares a yearly surplus put towards prepayment with the same surplus invested, using your own loan rate, expected return and period. For one fixed case worked through, a one-time ₹5 lakh against a ₹50 lakh loan at 8.5% with 20 years left, see Should you use ₹5 lakh extra cash to prepay your home loan or invest in an SIP?
Key Differences
| Feature | Home Loan Prepayment | Invest in SIP |
|---|---|---|
| Effective return | Saves interest at loan rate (8.5–9.5%) | Market returns (10–13% historically) |
| Risk | Zero — guaranteed interest saving | Equity market risk |
| Tax impact | Reduces Section 24 benefit (reduces deductible interest) | LTCG 12.5% after 1yr above ₹1.25L |
| Liquidity | Irreversible — reduces liability | Fully liquid anytime |
| Ideal for | Higher income bracket, high loan rate | Younger investor with long horizon |
| Certainty of the benefit | Certain — exactly your loan rate | Uncertain — a range of outcomes |
| Prepayment charge | None on floating-rate loans to individuals, per RBI | Not applicable |
| Tax cost of prepaying, new regime | None — no s24(b) benefit to lose on a self-occupied home | Gains taxed on redemption |
| Tax cost of prepaying, old regime | Reduces deductible interest under s24(b) | Gains taxed on redemption |
| Reversibility | Irreversible without a fresh loan | Fully liquid |
When to Choose Which
Choose Home Loan Prepayment
- Loan interest rate > 9%
- You are in the last 5 years of loan tenure
- Risk-averse — debt freedom is a priority
- No 80C/Section 24 deduction available (new regime)
Choose Invest in SIP
- Loan rate < 9% (especially < 8.5%)
- Long remaining tenure (> 10 years)
- You can handle equity market ups and downs
- Consistently earning 12%+ CAGR on equity SIP
Worked Examples
Assume a loan at 9% and an expected equity return of 12%. The gap looks decisive until you adjust for certainty and tax.
| Scenario | Home Loan Prepayment | Investing the Same Money |
|---|---|---|
| New regime, self-occupied home | Full 9% saving, no tax benefit forgone | 12% expected, taxed at 12.5% on redemption |
| Old regime, interest still under ₹2 lakh | Effective saving is lower — you lose deductible interest | Retains the deduction as well as the investment |
| Old regime, interest already above ₹2 lakh | The excess earns no deduction anyway, so prepaying costs nothing in tax | Investment gains taxed as usual |
The middle row is the one that surprises people. Under the old regime, prepaying can reduce a deduction you were using, so the effective benefit is below your headline loan rate. Under the new regime there is no self-occupied interest deduction to lose, so prepayment is worth its full rate — which makes it distinctly more attractive than most older comparisons suggest.
How Each Is Taxed
This is where the regime you are on changes the answer. Under the old regime, section 22(1)(b) allows up to ₹2 lakh of interest on a self-occupied property, and section 123 covers principal within the overall ₹1.5 lakh cap — so prepaying can shrink a deduction you were relying on. Under the new regime, which is now the default, neither is available for a self-occupied property: no s24(b) interest deduction and no 80C on principal. Nothing is lost by prepaying, so the saving is worth its full face value. For a let-out property the position differs again — interest remains deductible against rental income under the new regime, but any resulting loss can only be set off against other income up to ₹2 lakh. On the other side, equity fund gains are taxed at 12.5% above ₹1.25 lakh a year once units are 12 months old, or 20% below that. RBI does not permit prepayment charges on floating-rate loans to individual borrowers, so prepaying a floating loan carries no penalty; fixed-rate loans may still attract one.
These rules apply to both FY 2025–26 and FY 2026–27 — Budget 2026 made no change to capital gains rates or holding periods.
Advantages and Limitations
Home Loan Prepayment
Works for you when
- You are on the new regime with a self-occupied home
- Your loan rate is high relative to realistic returns
- The certainty of the saving matters more to you than the upside
- You want the psychological relief of a smaller debt
Watch out for
- The money is gone — you cannot get it back without borrowing again
- Under the old regime you may forgo a live deduction
- It does nothing for liquidity or emergencies
Investing the Same Money
Works for you when
- Your horizon is long and your loan rate is modest
- You still have a deduction worth protecting under the old regime
- You want to keep the money accessible
Watch out for
- The return is not guaranteed; the interest cost is
- Requires holding through falls without panicking
- Gains are taxed; the interest saving is not
How to Decide
Work through in order — the first clear answer usually decides it.
- Which regime are you on? New regime plus a self-occupied home means prepaying loses you no deduction — a strong point in its favour.
- Is your emergency fund already in place? If not, neither — build that first.
- Is the loan floating rate? Then RBI rules mean no prepayment charge, so there is no friction cost.
- Compare honestly: a guaranteed saving at your loan rate against an uncertain return, after tax, over your actual remaining tenure.
- How would a 30% market fall feel while you still owe the loan? If the answer is bad, prepay.
Many borrowers reasonably do both — a fixed annual prepayment plus a continuing SIP. That hedges the fact that nobody knows which will have been right.
Frequently Asked Questions
Sources and Method
Figures on this page are computed by the calculator above from the inputs you enter. Worked examples assume the stated return is earned evenly and ignore exit load, expense ratio and inflation, so treat them as illustrations of the mechanism rather than forecasts.
- Capital gains treatment — Income Tax Act, sections 111A and 112A, as amended by the Finance Act 2024 and unchanged by Budget 2026.
- Rupee cost averaging — AMFI investor education.
- Mutual fund product rules — SEBI (Mutual Funds) Regulations.
Last reviewed: . This page explains how two investment methods behave. It is general information, not investment advice, and mutual fund investments carry market risk.