Arbitrage Fund
An Arbitrage Fund is a hybrid mutual fund scheme that generates returns by simultaneously exploiting price differences between the cash (spot) and futures markets for the same stock, with at least 65% of its assets in equity and equity-related instruments. Despite its equity classification, it has risk-return characteristics closer to a liquid or short-duration debt fund.
Arbitrage Funds exploit the price differential between the cash market and the futures market for the same stock. For example, if Reliance Industries trades at Rs 2,450 in the cash market and its near-month futures contract trades at Rs 2,465, an arbitrage fund simultaneously buys the stock in the cash market and sells the futures, locking in a Rs 15 profit per share at no market risk. On the futures expiry date, the cash and futures prices converge, and the position is closed out with the locked-in profit.
Because the fund holds simultaneous long and short positions in the same stock, the portfolio is market-neutral — the fund's NAV does not depend on whether equity markets go up or down. The return of an arbitrage fund is primarily determined by the spread between cash and futures prices across the portfolio, which is influenced by market volatility, liquidity, and overall market sentiment. In volatile periods, arbitrage spreads tend to widen, improving arbitrage fund returns. In calm, range-bound markets, spreads narrow and returns approach risk-free rates.
The key advantage of arbitrage funds lies in their tax treatment. Because they maintain at least 65% equity exposure (sum of long cash positions counts as equity for taxation), gains from arbitrage funds held beyond one year are taxed as equity LTCG (12.5% above Rs 1.25 lakh), and short-term gains (under one year) at 20%. This is significantly more tax-efficient than liquid or short-duration debt funds, whose gains are taxed at the investor's income slab rate for holdings under three years. For investors in the 30% tax bracket parking money for 6-12 months, arbitrage funds offered a meaningful post-tax return advantage over liquid funds.
Return expectations from arbitrage funds should be realistic — typically 5.5-7.5% annualised, broadly comparable to liquid fund returns before tax. The post-tax advantage over debt funds is their key differentiator, not superior pre-tax returns. During exceptional market volatility (such as March 2020 or June 2022), spreads widened and arbitrage fund returns temporarily spiked, but normalised quickly as the market stabilised.
Arbitrage funds are most suitable as a tax-efficient alternative to debt for investors with a 6-12 month horizon who have already utilised their Rs 1.25 lakh LTCG exemption for the year from other equity investments, or for investors managing large surplus funds where even a 5-8% post-tax return differential versus savings accounts is meaningful.