Debt MFs After April 2023: Indexation Is Dead

Before April 2023, debt mutual funds were the retail bond alternative: held > 3 years, LTCG at 20% WITH indexation, effective tax rate often 8-12%. From April 2023, LTCG concession vanished. Debt funds bought after 1 April 2023 are taxed at slab regardless of holding period. The category is half of what it was. HDFC Banking PSU, SBI Short Duration, Kotak Dynamic Bond. All the conservative default options for debt allocation now face 30% slab tax for the typical 30%-slab investor, making bank FDs competitive again.

By the end, you will know the April-2023 cutoff, what it covers, the surviving debt categories, and the strategic shift to conservative hybrid funds.

The cutoff. Section 50AA (Finance Act 2023)

Section 50AA, inserted by Finance Act 2023 effective 1 April 2023: "Specified mutual funds" (where <= 35% of total assets are in equity) purchased on or after 1 April 2023. Any gains are taxed at slab rate, irrespective of holding period. No LTCG concession. No indexation. Grandfathered: units bought BEFORE 1 April 2023 retain old LTCG with indexation for sale after 36 months. The grandfather applies to existing units only; incremental SIP contributions after 1 April 2023 into the same fund fall under the new rule.

Why the change: the government's view was that debt MFs were getting a tax concession (LTCG + indexation = often 8-12% effective tax) that bank FDs and small-savings schemes did not get. Harmonising at slab rate removed the concession and the "tax-arbitrage" that had pushed HNI savings from FDs to debt MFs over the previous decade. Net effect: debt MFs lost their primary tax edge overnight.

What survived (partial equity protects)

Conservative hybrid funds (35-65% equity). Still get 12.5% LTCG above Rs. 1.25L after 2 years of holding.
Balanced-advantage / dynamic-asset-allocation funds (typically >= 35% equity). Stay in the old 12.5% LTCG bucket.
Equity-oriented funds (>= 65% equity, including ELSS). Always in 12.5% bucket.
ETFs that track fixed-income indexes but have >= 35% in eligible equity mix. Retain 12.5% treatment.

The 35% equity threshold is load-bearing: drop to 34% and you fall into the slab-rate bucket; stay at 35%+ and you retain the 12.5% concession. This has driven some debt-ish funds to rebalance to 35-36% equity to preserve tax benefits. A portfolio implication for investors as the product morphs around the rule.

Strategic shift. Where conservative investors went

Post April 2023, conservative investors rotated: (a) into conservative hybrid funds (35% equity + 65% debt. Retains concession); (b) into arbitrage funds (equity classification with near-debt risk-return); (c) into direct bonds / tax-free bonds / SGBs; (d) back into bank FDs for guaranteed returns without tax concession comparison. The shift hurt fund houses' debt AUM and boosted hybrid AUM materially.

Reclassification risk on old holdings

Some funds rebalanced equity allocation post-April 2023 to escape the slab bucket (or inadvertently fell into it). Check your fund's latest portfolio disclosure. If equity fell below 35%, your old grandfather protection can lapse at the date of scheme reclassification. This is one of the under-appreciated aftershocks of the amendment.

Reclassification risk on grandfathered holdings

Some funds fell below the 35% equity threshold post-amendment; your grandfather protection can lapse on the date of scheme change. Check quarterly portfolio disclosures and SID amendments for your held funds.

Arbitrage funds as conservative-debt alternative

Arbitrage funds are equity-classified (65%+ in equity via offsetting cash-futures positions) but deliver debt-like returns (~5-7%). Post April 2023, they became the go-to replacement for short-duration debt funds in tax-sensitive portfolios. 12.5% LTCG above Rs. 1.25L applies.

Direct bond investing. The bond-ladder alternative

Direct bond investing via RBI Retail Direct or exchange-traded bonds gives you coupon interest taxed at slab (same as debt MF now) PLUS indexation-free capital gains. Net: comparable tax to debt MF but zero expense ratio drag. Slightly worse liquidity; better for large allocations.

Key Takeaways

Debt MFs bought on or after 1 Apr 2023: slab rate, no LTCG concession, no indexation.
Pre-1-Apr-2023 units: LTCG 20% with indexation (grandfathered) for sales after 36 months.
Hybrid funds with 35-65% equity: still in 12.5% LTCG bucket (post-2024 rate).
Check your fund's equity allocation annually. Rebalances can change your treatment.
Arbitrage funds are equity-classified and became the tax-efficient debt alternative.