What is an Arbitrage Fund?

What if you could profit from a price difference without taking any real market risk? That is the core idea behind an arbitrage fund. It is a type of hybrid fund that buys a stock in one market and simultaneously sells it in another to capture the price gap. The returns are modest, the risk is low, and the tax treatment in India makes it surprisingly attractive.

What Is a Hybrid Fund and Where Does Arbitrage Fit?

A hybrid fund invests in both equity and debt instruments. Within this category, you find aggressive hybrid funds, balanced advantage funds, conservative hybrid funds, and arbitrage funds. Each one has a different mix of equity and debt.

An arbitrage fund sits at the conservative end of this spectrum. It holds at least 65% of its assets in equity — but not in the way you might expect. The equity exposure comes from arbitrage positions, not directional bets on stocks going up.

How Arbitrage Funds Actually Work

Here is the mechanism in simple terms. A stock trades at 1500 rupees on the NSE cash market. The same stock's futures contract on the NSE F&O segment trades at 1508 rupees. The fund manager buys the stock in the cash market and sells the futures contract at the same time.

When the futures contract expires, the cash and futures prices converge. The fund pockets the 8 rupee difference. This is a risk-free profit because both sides of the trade are locked in at the moment of execution.

The fund does this across dozens of stocks simultaneously. Each individual trade earns a small spread, but together they add up to a steady, predictable return.

What About the Remaining 35%?

The portion that is not deployed in arbitrage positions goes into short-term debt instruments — treasury bills, commercial paper, and corporate bonds. This adds a small layer of fixed-income return on top of the arbitrage gains.

Returns: What Should You Expect?

Arbitrage funds are not going to make you rich. Their returns typically range from 4% to 7% per year, depending on market volatility. When markets are volatile, the spreads between cash and futures prices widen, and arbitrage funds earn more. When markets are calm, spreads compress and returns drop.

Think of arbitrage fund returns as slightly better than a liquid fund, and significantly below what equity funds deliver over the long term. You are trading upside for stability.

The Tax Advantage — This Is the Real Draw

Because arbitrage funds maintain 65% or more in equity, they qualify as equity funds for tax purposes in India. This matters a lot.

If you hold for more than 12 months, your gains above 1.25 lakh rupees per year are taxed at 12.5% (long-term capital gains). If you hold for less than 12 months, the tax rate is 20% (short-term capital gains).

Compare this with liquid funds or fixed deposits, where gains are taxed at your income tax slab rate — which could be 30% or higher. For someone in a higher tax bracket, the after-tax return from an arbitrage fund can beat a liquid fund by a meaningful margin. This is the main reason people choose arbitrage funds.

When Should You Use an Arbitrage Fund?

Arbitrage funds are not a permanent home for your money. They are a parking tool for specific situations:

• Short-term surplus — You have money you will need in 3 to 12 months. An arbitrage fund offers better post-tax returns than a savings account.
• Waiting to deploy — You plan to invest in equity but want to wait for better valuations. Park your money in an arbitrage fund meanwhile.
• Tax efficiency — You are in the 30% tax bracket and want to earn more than a fixed deposit after taxes.
• Emergency buffer — Some investors keep part of their emergency fund here for the tax benefit, though liquidity is slightly slower than a liquid fund.

Risks You Should Know About

Arbitrage funds are low-risk, but they are not risk-free in practice:

• Spread compression — In calm markets, the price gaps between cash and futures shrink. Returns drop below what a simple liquid fund delivers.
• Execution risk — If the fund manager cannot find enough arbitrage opportunities, more money sits in debt, which reduces the tax advantage.
• Exit load — Most arbitrage funds charge an exit load of 0.25% to 0.50% if you redeem within 15 to 30 days. Check this before you invest.
• Not truly zero risk — Unusual market events like exchange glitches or settlement failures can cause small losses, though this is rare.

How to Pick an Arbitrage Fund

Look at these factors when choosing:

1. Expense ratio — Since returns are already thin, a high expense ratio eats into your gains disproportionately. Prefer direct plans with expense ratios under 0.5%.
2. Consistency of returns — Check monthly returns over the past 2 years. The best arbitrage funds deliver steady returns without wild swings.
3. Fund size — Very large funds may struggle to find enough arbitrage opportunities. Very small funds may have higher expense ratios. A mid-sized fund often works best.
4. Exit load terms — Shorter exit load periods are better, especially if you might need the money quickly.

You can verify fund details and compare NAV histories on the AMFI India website.

The Verdict on Arbitrage Funds

Arbitrage funds are not exciting. They will not double your money. But they solve a specific problem well: where do you park short-term money if you want better post-tax returns than a bank account? For investors in higher tax brackets, the equity taxation benefit alone makes arbitrage funds worth considering. Just keep your expectations realistic — this is a parking spot, not a growth engine.