Arbitrage Funds as a Debt Alternative: What MFDs Need to Know
Arbitrage funds are equity-taxed mutual funds that exploit the price difference between the cash market and futures market to generate returns that behave like short-term debt instruments. For investors in the higher tax brackets, they can deliver meaningfully higher post-tax returns than fixed deposits or short-duration debt funds - but only when used correctly.
What is an Arbitrage Fund?
An arbitrage fund is a type of mutual fund that seeks to benefit from price differences between the cash (spot) market and the futures market.
Here is a simplified example
Stock (cash market): ₹1,000
Futures (1-month): ₹1,010
Locked-in spread = ₹10 (before costs)
When the futures contract expires, both legs converge to the same price. The fund books the spread as profit. Because both legs are matched, the fund carries almost no directional market risk. Whether the stock goes up, down, or sideways, the spread is already locked.
Where Arbitrage Fund Returns Actually Come From?
Most investor-facing materials describe arbitrage returns as "low-risk returns from price differences." That's accurate but thin. Investors who understand the real economics position these funds far more credibly.
1. Cost of Carry / Interest Rates
Futures trade at a premium over spot price because buyers of leveraged positions pay a financing cost. Higher interest rates → higher spreads → better arbitrage returns
2. Liquidity & Demand for Leverage
When traders and investors want to take leveraged long positions in equities, they buy futures. Higher demand pushes futures premiums up, which creates better opportunities for arbitrage funds. Bull market phases with high retail participation tend to produce better arbitrage returns.
3. Short Term Market Volatility
Counterintuitively, volatility spikes can briefly widen spreads. Calm, directionless markets compress them.
The key takeaway for MFDs: arbitrage fund returns are not "equity returns", nor are they guaranteed like FD returns. They track short-term interest rates more closely than anything else.
Why Investors Use Arbitrage Funds as a Debt Alternative?
Three use cases dominate:
1. Generating income for expenses (especially retirees). The post-tax yield advantage over FDs is significant for high-bracket investors. More on this below.
2. Systematic Transfer Plans (STPs) into equity. Parking a lump sum in an arbitrage fund before systematically moving it into equity funds gives you near-debt stability while you deploy capital over 12-24 months. Many platforms, including Creso, let you set this up automatically.
3. Temporary allocation during market uncertainty. When an investor wants to reduce equity exposure but doesn't want to move to full debt, arbitrage funds offer a middle ground with a better tax profile.
The Tax Advantage: Where the Real Edge Lives
Because arbitrage funds maintain 65%+ equity exposure (even though that exposure is fully hedged), they are classified as equity funds. That classification carries equity fund taxation:
Comparison:
Feature | Arbitrage Funds | Debt Funds |
|---|---|---|
Holding Period <1 Year | 20% | Slab |
Holding Period >1 Year | 12.5% (above ₹1.25L gains) | Slab |
For investors in the 30% tax slab, this creates a meaningful post-tax alpha
A Real Numbers Example: Post-Tax Returns for a Retiree
Lets say Mr. X is a retired individual with a decent-sized corpus and who falls in the 30% income tax slab. His annual living expenses are ~₹12 lakhs. He wants to invest ₹2 crore in low-risk instruments to fund his living expenses. Rest of his investments are in equity mutual funds.
Arbitrage Fund | Debt Fund / FD | |
|---|---|---|
Amount Invested | 2,00,00,000 | 2,00,00,000 |
Return Expectations * | 6.00% | 6.70% |
Pre-Tax Returns | 12,00,000 | 13,40,000 |
Tax rate** | 12.50% | 30% |
Post-Tax Return | 10,50,000 | 9,38,000 |
Additional Return in Arbitrage Funds | 1,12,000 | |
*Return expectations for arbitrage funds based on 3 and 5 year returns of our top 3 ranked funds. We have adjusted this downwards to reflect the higher STT applicable as per the recent Union Budget. For debt funds, return expectations are based 3 and 5 year returns of our top 3 ranked short duration funds.
**Assumes no tax gain harvesting, no cess or surcharge
The arbitrage fund delivers ₹1.12 lakh more in post-tax income annually, roughly ~9% of annual expenses.
But this advantage only exists at higher tax slabs. Here's how it shifts:
Income Tax Slab | ||
|---|---|---|
10% | 20% | 30% |
-1,56,000 (Debt Fund wins) | -22,000 (Debt Fund slightly better) | 1,12,000 (Arbitrage Fund wins) |
Thus, arbitrage funds are favourable for investors who sit in the higher tax slabs, while debt funds may be favourable for investors in the lower tax slabs.
Key Risks with Arbitrage Funds
Returns Are Variable, Not “Fixed”
Arbitrage fund returns fluctuate. A fund that returned 6.5% last year might return 4.8% next year if rate spreads compress. FD investors who move to arbitrage funds without understanding this sometimes feel misled.
Spread Compression Risk
Arbitrage funds earn from cash–futures spreads, which are linked to short-term interest rates and demand for leverage. Excess liquidity in system, low interest rates and reduced F&O demand can cause spreads to shrink and returns to fall – thereby breaking the ‘debt-like’ impression investors have.
Liquidity & Execution Risk
Arbitrage relies on simultaneous execution in cash and futures markets, and tight bid-ask spreads. During times of low liquidity, slippages increase, impact costs become meaningful (specially for large AUM funds) and higher expense ratios can eat into investor returns.
When Should MFDs Recommend Arbitrage Funds?
Ideal Use Cases:
High tax bracket clients
Parking money for medium term
STP into equity
Conservative investors avoiding duration/credit risk
Avoid When:
Client expects fixed returns
Investment horizon <90-180 days
Client compares with FD certainty
The Bottom Line
Arbitrage funds sit in a unique space:
Structurally equity
Behaviourally debt-like
Economically linked to short-term interest rates
For the right client and right horizon, they can be extremely effective.
FAQs
Q: Are arbitrage fund returns guaranteed?
A: No. Returns are market-linked and vary based on cash-futures spreads, short-term interest rates, and F&O market demand. Historically, they've ranged from 4% to 8% annually. They carry less volatility than equity funds but more variability than fixed deposits.
Q: How are arbitrage funds different from liquid funds?
A: Liquid funds invest in short-term debt instruments and are taxed as debt (at slab rates). Arbitrage funds use equity hedging strategies and are taxed as equity. For high-bracket investors, arbitrage funds often deliver better post-tax returns despite having similar risk profiles. Liquid funds have same-day or T+1 redemption; arbitrage funds are typically T+2 or T+3.
Q: Who should avoid arbitrage funds?
A: Investors in the 10% tax bracket (debt funds are more tax-efficient for them), investors expecting FD-style guaranteed returns, and anyone with a horizon under 90 days. Short holding periods eliminate the tax advantage and leave the investor exposed to short-term variability without compensation.
If you want to compare top-ranked arbitrage funds by trailing returns, expense ratios, and AUM, see the full arbitrage fund universe ranked on Creso. Creso's ranking methodology helps MFDs identify funds best suited to specific client profiles, not just the ones with the highest recent returns.
Disclaimer: The information provided in this discussion is strictly for educational and informational purposes and does not constitute professional financial, investment, legal, or tax advice. Mutual fund investments are subject to market risks, including the potential loss of principal, and past performance is not a reliable indicator of future results. All specific fund names, historical events, or financial metrics mentioned are for illustrative purposes only and should not be construed as recommendations to buy or sell any security. You are strongly advised to consult with your advisor or a qualified financial planner to assess your specific risk profile, tax bracket, and financial goals before making any investment decisions.
