Arbitrage fund vs liquid fund for short-term cash parking
Arbitrage funds and liquid funds are both used for short-to-medium term cash parking in India, but they differ in investment strategy, risk profile, and most significantly, tax treatment. The tax difference is the primary reason arbitrage funds are often chosen over liquid funds for investors in higher income tax brackets for holding periods of one year or more.
Structure
Arbitrage fund
An arbitrage fund exploits price differentials between the cash (spot) and futures markets for the same equity security. The fund simultaneously buys a stock in the spot market and sells the equivalent quantity in the futures market, locking in the price difference (the “spread”) as a near-risk-free return. At futures expiry, both positions are closed.
Under SEBI’s categorisation, arbitrage funds must invest at least 65% in equity and equity-related instruments (including arbitrage positions). Because they maintain 65%+ equity exposure, they are classified as equity-oriented funds for income tax purposes, despite carrying minimal directional equity risk.
Liquid fund
A liquid fund invests in debt and money market instruments with a residual maturity of up to 91 days. Returns are driven by prevailing short-term interest rates (repo rate, certificate of deposit rates, treasury bill yields). Liquid funds have no equity exposure.
Return comparison (2023-24, indicative)
| Instrument | Approximate return |
|---|---|
| Arbitrage fund | 6.5%–7.5% per annum |
| Liquid fund (direct plan) | 6.8%–7.2% per annum |
Returns on both instruments are broadly similar in absolute terms over most periods. Arbitrage fund returns track the cost of carry in the futures market (which is correlated with short-term interest rates). When the spread between spot and futures prices is high (typically before month-end or quarterly expiry), arbitrage returns are elevated. Liquid fund returns are more stable and closely track the repo rate.
Tax treatment
This is the decisive difference between the two instruments for investors with a holding period above 12 months.
| Tax dimension | Arbitrage fund | Liquid fund |
|---|---|---|
| Classification | Equity-oriented fund (≥65% equity) | Specified mutual fund (Section 50AA, debt category) |
| STCG (< 12 months) | 20% | Slab rate |
| LTCG (≥ 12 months) | 12.5% above Rs 1.25 lakh exemption | Slab rate |
For an investor in the 30% tax bracket:
- Liquid fund gain after 1 year: 7.0% pre-tax return = 4.9% post-tax return (30% slab rate)
- Arbitrage fund gain after 1 year: 7.0% pre-tax return = ~6.1% post-tax return (12.5% LTCG, ignoring Rs 1.25 lakh exemption)
The tax differential makes arbitrage funds significantly more tax-efficient for investors in the 20% and 30% tax brackets for holding periods above 12 months.
For holding periods below 12 months, the arbitrage fund’s STCG rate of 20% may be less favourable than the slab rate for investors in the 5% or 10% tax bracket. For investors in the 30% bracket, 20% STCG on arbitrage is still more favourable than 30% slab on liquid fund gains.
Risk profile
Arbitrage funds carry minimal directional equity risk because every long position is simultaneously hedged with a short futures position. The primary risks are:
- Roll risk / convergence risk: If the spread narrows before expiry, the locked-in return is lower.
- Counterparty risk: Marginal; clearinghouse-backed futures settlement.
- Portfolio roll cost: At each futures expiry, positions must be rolled to the next expiry, incurring transaction costs and the prevailing new spread.
Liquid funds carry credit risk from the underlying money market instruments and interest rate risk (minimal given the 91-day maximum maturity).
Liquidity and exit load
| Dimension | Arbitrage fund | Liquid fund |
|---|---|---|
| Exit load | 0.25%–0.5% for redemptions within 15-30 days (fund-specific) | Graded exit load within 7 days; nil from Day 8 (SEBI 2019 circular) |
| Redemption processing | T+1 (equity fund settlement) | T+1; instant redemption up to Rs 50,000 on select platforms |
| STT on redemption | 0.001% (equity fund exit STT) | Nil |
Arbitrage funds are generally less suitable for very short-term parking (less than 1 month) due to the exit load. Liquid funds, after the 7-day graded exit load period, carry no exit penalty and support instant redemption.
Tax harvesting using arbitrage funds
For investors with existing equity mutual fund or stock portfolios, arbitrage funds serve as a tax-efficient parking vehicle when transitioning a lump sum from equity to a defensive posture. Since arbitrage fund gains after 12 months are taxed as equity LTCG (at 12.5% above Rs 1.25 lakh), they can form part of a portfolio-level tax planning strategy.
Summary comparison table
| Dimension | Arbitrage fund | Liquid fund |
|---|---|---|
| Strategy | Cash-futures arbitrage | Money market and debt instruments (≤ 91 days) |
| Equity classification | Yes (≥ 65% equity) | No |
| STCG tax rate | 20% | Slab rate |
| LTCG tax rate (> 12 months) | 12.5% | Slab rate |
| Tax advantage (30% bracket) | Significant for > 12-month holding | None relative to FD or other slab-taxed instruments |
| Exit load | 0.25%–0.5% within 15-30 days | Graded (Day 1-7); nil from Day 8 |
| Instant redemption | Not typically available | Available up to Rs 50,000 on select platforms |
| Return range (2023-24) | 6.5%–7.5% | 6.8%–7.2% |
| Best suited to | Tax-bracket-aware investors; medium-term parking (1-3 years) | Very short-term parking; daily liquidity needs |
See also
- Liquid fund vs savings account
- Liquid fund vs sweep-in FD
- Debt mutual fund vs bank FD (post-2023)
- Mutual fund
- Capital gains tax in India
References
- SEBI (Mutual Funds) Regulations, 1996, Arbitrage fund categorisation (minimum 65% equity).
- SEBI circular SEBI/HO/IMD/DF2/CIR/P/2019/101, Graded exit load for liquid funds.
- Income Tax Act, 1961, Section 2(42A) equity-oriented fund definition; Section 112A; Section 50AA.
- Finance Act 2023, Section 50AA debt fund treatment.
- Finance (No.2) Act 2024, LTCG and STCG rates.
- NSE, Equity futures settlement mechanism.