FD vs Debt Fund
Same slab rate on both now. What is left is when the tax is paid.
- FD before tax
- ₹19,67,151.36
- FD after tax, interest taxed every year as it accrues
- ₹16,13,447.66
- Debt fund after tax, taxed once at redemption
- ₹16,77,005.95
- Worth of deferral alone, at the same rate
- ₹63,558.29
The old case for debt funds is gone. Units bought on or after 1 April 2023 in a fund holding more than 65% in debt and money-market instruments are taxed at your slab rate however long you hold them, with no indexation and no long-term rate — that was section 50AA. What survives is deferral, and it is the only honest argument left. FD interest is taxed every year as it accrues, whether or not you withdraw it, so only the post-tax amount goes on compounding. A debt fund is taxed once, at redemption, so the whole pre-tax amount compounds until then. The final line above isolates that effect by giving the fund the FD's own rate. It is worth more the longer you hold and the higher your slab, and nothing at all at a zero slab rate — which is why an FD often suits someone in the 5% bracket and a debt fund someone in the 30% one. Two things not modelled: TDS on FD interest above ₹50,000 a year for those under 60 and ₹1 lakh for senior citizens, which affects cash flow rather than the total tax; and the fact that an FD's return is contractual while a debt fund's is not — it carries interest-rate and credit risk, and can fall.
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How it works
The old case for debt funds was indexation and a 20% long-term rate. That is gone: units bought on or after 1 April 2023 in a fund holding more than 65% in debt and money-market instruments are taxed at your slab rate however long you hold them. Both options now face the same rate.
What survives is deferral, and it is the only honest argument left. Fixed deposit interest is taxed every year as it accrues, whether or not you withdraw it, so only the post-tax amount goes on compounding. A debt fund is taxed once, at redemption, so the whole pre-tax amount compounds until then.
That advantage is worth more the longer you hold and the higher your slab, and it is worth nothing at all at a zero slab rate — which is why a fixed deposit often suits someone in the 5% bracket and a debt fund someone in the 30% one.
FD after tax = amount compounded at rate x (1 - slab rate), because each year's interest is taxed as it accrues. Debt fund after tax = amount compounded at the gross rate, less slab-rate tax on the whole gain at redemption.Giving the fund the FD's own rate isolates the value of deferral alone, separating it from any difference in the return the two actually deliver.
Frequently asked questions
Do debt funds still get indexation?
No. Indexation on debt funds ended for units bought on or after 1 April 2023, and the 2024 Budget then removed it from almost everything else too. Units bought before April 2023 follow the ordinary rules — long-term after 24 months at 12.5%, but still without indexation for transfers on or after 23 July 2024.
Why does a debt fund still beat an FD at the same rate?
Because of when the tax is paid. FD interest is taxed in the year it accrues even if you leave it in the deposit, so each year you compound a post-tax amount. A debt fund's gain is taxed only when you redeem, so you compound the full pre-tax amount for the whole period and settle once at the end. Over ten years at a 30% slab that difference is material.
Is a debt fund as safe as a fixed deposit?
No, and the comparison above deliberately says nothing about risk. An FD's return is contractual and, up to ₹5 lakh per bank per depositor, insured by the DICGC. A debt fund's return is not promised: it carries interest-rate risk, which can produce negative returns over short periods when yields rise, and credit risk depending on what it holds. Compare a fund to an FD only where you would accept that variability.
What about TDS on my FD interest?
Banks deduct TDS once interest crosses ₹50,000 in a year for those under 60, or ₹1 lakh for senior citizens. That affects your cash flow rather than your total tax — the interest is taxable at slab either way, and the TDS is adjusted against your final liability. It does not change this comparison, which taxes the FD interest annually regardless of whether TDS was deducted.