Loans & Property
Debt Repayment vs Investing
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A guaranteed saving at your borrowing rate against an uncertain return at the market’s — which surplus rupee goes where.
Why This Is Not a Fair Fight
Repaying debt is not an investment that happens to be safe. It is the removal of a liability, and the return it produces is exactly your borrowing rate, guaranteed, tax free, and available on the day you pay.
Investing produces a return that is expected, not promised. It can be negative for years. It is taxed. It can be needed at exactly the moment the market is down.
So comparing a 18% credit card against a 12% expected equity return is not comparing 18 with 12. It is comparing a certain 18 with an uncertain, taxed 12. The gap is wider than it looks.
The Rate Ladder
| Debt | Typical rate | Verdict against investing |
|---|---|---|
| Credit card revolving balance | 36 to 42% a year | Clear it first, without hesitation |
| Personal loan | 11 to 24% | Clear it. Almost no realistic after-tax return competes |
| Consumer or gadget EMI | Often 14 to 22% once fees are included | Clear it |
| Car loan | 9 to 12% | Close call. Clear it unless you have a strong reason not to |
| Education loan | 8 to 12%, interest deductible under Section 80E | Close call. The deduction lowers the effective rate |
| Home loan | 8 to 9.5%, possible Section 24(b) relief | Genuinely arguable. Treated separately |
Almost the whole question collapses once you sort your debts by rate. Anything above roughly 12% is not competing with a market return, it is beating it on certainty alone.
What the Calculator Is and Is Not Saying
The widget above compares the interest you avoid by clearing a balance with the after-tax gain you might make by investing the same money over the same period. Both sides use compound growth so they are measured on the same basis.
What it cannot do is price risk. A 12% expected equity return is an average across long periods; the path is not smooth, and a three-year window can end below where it started. The left-hand number happens whatever the market does. Read the two columns as a certain amount against a projected one, never as two forecasts.
The Order Most Households Should Follow
There is a sequence that resolves most of this without needing the arithmetic at all.
First, keep any employer retirement match. It is an immediate return no debt rate beats.
Second, hold a minimum emergency buffer, perhaps one month of expenses. Clearing every rupee of debt with no buffer simply guarantees you borrow again at the same rate on the next surprise.
Third, clear every debt above roughly 12%, hardest first. Credit cards before anything.
Fourth, build the emergency fund out to its full size.
Fifth, invest, and treat any remaining low-rate secured debt as a separate decision on its own merits.
When Each Makes Sense
Clear the debt
- The rate is above roughly 12%, and certainly if it is card debt
- The debt is unsecured and would not be forgiven in hardship
- The obligation is limiting your borrowing capacity for something you need
- The monthly repayment is a source of stress rather than a line item
Invest instead
- The debt is secured, long dated and priced below roughly 9%
- You would be giving up an employer match to repay
- You have not yet built any emergency buffer, and liquidity matters more than either
- The interest is deductible and your effective rate after relief is genuinely low
Tax Changes the Comparison on Both Sides
On the investing side, gains are taxed. Equity held over a year is taxed at 12.5% above the ₹1.25 lakh annual exemption; held under a year at 20%. Debt fund gains are taxed at your slab rate. A 12% gross return is not a 12% net return.
On the debt side, most personal borrowing carries no relief at all. The exceptions matter: education loan interest is deductible under Section 80E without a ceiling for up to eight years, and home loan interest under Section 24(b) up to ₹2,00,000 on a self-occupied property, both only under the old regime.
Where relief applies, use the effective after-relief rate in the calculator rather than the headline rate.
How to Decide
List every debt with its rate. Anything above 12% is settled; pay it. For what remains, put the effective rate into the left column and a return you would genuinely bet on into the right.
Then apply the tie-breaker that the arithmetic cannot: if the two sides are close, take the certain one. A guaranteed saving of a given size is worth more than a projected gain of the same size, because you keep it whatever happens next.
Frequently Asked Questions
Sources and Method
The calculator compounds the surplus at the debt rate on one side and at the expected return on the other, over the same period, then applies the tax rate you enter to the investment gain only. It does not model the amortisation of a specific loan, so for a live loan the prepayment calculator gives a more exact figure.
- Capital gains on equity — Income Tax Act, sections 111A and 112A.
- Education loan interest — Section 80E. Housing loan interest — Section 24(b). Both old regime only.
Last reviewed 22 August 2026. General information, not investment or lending advice. Expected returns are assumptions you supply, not forecasts.