₹1,949. That is the entire prize for moving ₹5 lakh out of a three-year SBI fixed deposit into a debt fund, at the 30% slab, if the fund behaves. A cousin calls debt funds "more tax-efficient", and you are one click from breaking a deposit. Run the fd vs debt fund sum first. A phone calculator can check it.
TL;DR: At the 30% slab with ₹5 lakh for three years, stay in the FD. The debt fund leads by under ₹2,000, on an assumed yield.
- Debt fund units bought since April 2023 are taxed at your slab, exactly like FD interest.
- The fund's only structural edge is paying tax once, at exit.
- A fund netting less than 6.34% a year loses to a 6.30% three-year FD.
- Senior citizens should not switch: SBI's senior rate wins outright.
Are debt funds better than FDs after the 2023 tax change?
Not for most savers, because gains on debt fund units bought since April 2023 are taxed at your income slab, so the old tax-rate advantage has gone and only the timing of the tax bill still differs.
ClearTax's summary is blunt: units bought on or after 1 April 2023 count as short-term whatever the holding period, taxed at slab, no indexation. At 30%, the government takes the same share from either product, so the choice turns on when you pay. It is the discipline behind deciding whether to renew or port a health policy after the GST exemption: strip the label, price the rupees.
Here is the whole sum, before cess. SBI's card, tabulated by GoldenPi for September 2026, pays 6.30% on three-to-five-year deposits; quarterly compounding makes that 6.45% a year. Banks count interest as it is credited, so the FD's tax comes out yearly. The fund's 6.5% net yield is an assumption, a planning number for a short duration debt fund, not a promise.
- FD: ₹1,01,190 of interest over three years, taxed each year at 30%, costs ₹30,357. You keep ₹5,70,833.
- Debt fund: ₹5,00,000 grows to ₹6,03,975. Tax at exit on the ₹1,03,975 gain is ₹31,192. You keep ₹5,72,782.
- Gap: ₹1,949 to the fund, roughly ₹54 a month for carrying market risk.
Split the gap, because its halves deserve different trust. Taxed in one lump at maturity, the FD would end at ₹5,72,192, so ₹1,359 is pure deferral. The other ₹590 exists only because the fund was assumed to earn a shade more, which, frankly, is the part I trust least. Unseen costs still cost, as UPI transaction charges after the zero-MDR repeal showed.
Four more numbers decide your side of the sum: ClearTax on pre-April-2023 units, Business Standard on the February 2025 Budget's TDS limit, Indian Pay Calculator reporting SBI Research on 12 September 2026, and GoldenPi's senior rate.
Old Units Turn Long-Term After
24 months
Then 12.5%, not 30%
FD Interest a Year Before TDS
₹50,000
Your ₹5 lakh stays under
Repo Hikes SBI Research Expects
2 by December
Lock short, not long
SBI Senior Rate, 3 to 5 Years
6.80%
FD beats the fund outright
Rerun the sum at the senior rate and the deposit ends at ₹5,76,876, ₹4,094 ahead of the fund. A retired parent has no tax reason to switch.
The debt fund's whole edge on ₹5 lakh is paying the same tax later. Three years of delay buys you less than ₹2,000, and one assumption can take it back.
So the real question is whether the timing gap survives what the sum cannot know.
FD vs debt fund on ₹5 lakh: the row-by-row verdict
On ₹5 lakh for three years at the 30% slab, both products tax the gain at the same rate, and the fund's small lead hangs on timing, its yield and when you exit.
The badge names what each row measures; the last column says what it does to your money.
| Dimension | Fixed deposit vs debt mutual fund | What it means for you |
|---|---|---|
| ๐ฐ Tax on gain | FD 30% slab, yearly Fund 30% slab, at exit |
⚠️ Same bite; only the date moves |
| ⏱ Tax timing | FD 3 bills, one a year Fund 1 bill, on redemption |
✅ Deferral is the fund's only real edge |
| ๐ Take-home | FD ₹5,70,833, fixed Fund ₹5,72,782, assumed |
⚠️ Lost if the fund nets under 6.34% |
| ๐งพ TDS | FD 10% past ₹7.75 lakh Fund None for residents |
✅ Large balances keep cash compounding |
| ๐ Rate risk | FD Locked for 3 years Fund About ₹1,250 per 25 bp |
❌ An early exit after a hike eats the lead |
| ๐ Best suited for | FD Seniors, or cash needed soon Fund Sums past the TDS limit |
๐ Most 30%-slab savers should stay put |
Only one row is yours to control: whether you might need the money early. If so, the fund's lead is a coin toss; the deposit's outcome is already on the receipt.
Most of the debt fund's lead is the tax delay rather than better returns, so a fund that merely matches the deposit's yield leaves you switching for about ₹1,360 over three years. Derived from this article's own sum: SBI's three-year card rate against an assumed fund yield, both taxed at 30%.
Should I break an FD to move into a debt fund?
Only if the money is large enough to trip TDS and you are certain you will not touch it for three years; otherwise the switch trades a fixed, known rate for a lead smaller than one month of the deposit's interest.
Rates are the part nobody can sum in advance. With the repo at 5.25%, a hike cuts a debt fund's NAV at once; assume one year of duration and each 25 basis points costs about ₹1,250 on ₹5 lakh. Hold the full term and higher accrual repairs it. Exit soon after two hikes and the lead is gone. "Debt funds are tax-efficient" was true before April 2023, so judge the claim now the way you would price an AC by kWh, not stars.
One lever sits inside the deposit. SBI pays 6.40% for two years to under three; book two years and 364 days and the FD ends at ₹5,72,037, clawing back ₹1,204 without leaving the bank. Check dates too: Tax Garden's guide, updated 21 September 2026, notes the TDS rule now sits in Section 393(1) of the Income Tax Act 2025, not Section 194A, so older guides may quote stale rates.
- Units bought before April 2023: keep them, or swap a lower long-term rate for your slab.
- Emergency money: a fund redeemed within a year carries NAV risk.
- Big balances at one bank: TDS withholds cash yearly, not extra tax.
Switch only if every line is true for you
- You will not need this money for three years.
- You are under 60 and do not qualify for the senior deposit rate.
- A fund you can name has cleared the table's break-even after expenses.
- Your interest at one bank would otherwise cross the TDS limit.
Stay. At the 30% slab, the FD gives up under ₹2,000 on ₹5 lakh in exchange for certainty. This week, pull out your FD receipt, check the tenor, and at renewal rebook for two years and 364 days instead of three. Switch only if every line on the card describes you.