Basis trading is one of the cleanest ways to earn yield in crypto markets without taking directional risk. By going long spot and short futures simultaneously, you lock in the difference (the basis) as a near-guaranteed return at expiry. For Indian traders on CoinSwitch Pro, the cash and carry trade can deliver meaningful annualised returns when the basis is wide enough.
This guide breaks down how basis trading works, walks through an INR example, and lists the risks that can eat into the apparently risk-free profit.
What Is Basis in Crypto Futures?
Basis is the spread between the futures price and the spot price.
Basis = Futures Price minus Spot Price
If BTC spot is ₹65,00,000 and the September quarterly futures contract trades at ₹66,30,000, the basis is ₹1,30,000 or about 2%.
If the futures price is higher than spot, basis is positive. If futures is lower than spot, basis is negative.
Contango vs Backwardation: Reading the Basis Direction
When futures trade above spot (positive basis), the market is in contango. This is the normal state for crypto, reflecting the cost of carry and the bullish bias of futures buyers.
When futures trade below spot (negative basis), the market is in backwardation. This is unusual in crypto but can happen during severe selloffs when leveraged longs are panic-selling futures.
Cash & Carry Arbitrage: How It Works
The basic mechanic is simple.
Buy Spot BTC + Short Quarterly Futures = Locked-In Profit
When the basis is positive, you can capture it. Buy 1 BTC on the spot market. Sell 1 BTC of quarterly futures at the higher price. Hold both positions until futures expiry.
At expiry, the futures contract settles at the spot price. The basis you locked in becomes your profit, less fees and margin costs.
The trade is delta-neutral. Your spot and futures positions are equal and opposite, so price movement does not affect the trade. Only the convergence of futures to spot at expiry matters.
Step-by-Step with INR Capital Example (₹5L Trade Size)
Suppose BTC spot is ₹65,00,000, September quarterly futures is at ₹66,30,000, expiry is 90 days away.
Capital: ₹5,00,000.
Buy spot: approximately 0.077 BTC at ₹65,00,000. Cost: ₹5,00,000.
Short futures: 0.077 BTC of the September quarterly at ₹66,30,000. This requires margin (let us say 20% of notional, so ₹1,00,000 in margin, though CoinSwitch Pro’s specific requirement will vary).
At expiry, futures settles at spot. Your locked-in basis: 0.077 × ₹1,30,000 = ₹10,010.
Returns less fees and TDS: roughly ₹9,500 to ₹9,800 over 90 days.
Annualised Return Calculation
₹9,500 over 90 days on ₹5,00,000 capital = 1.9% over 90 days = roughly 7.6% annualised.
This is a clean, near-deterministic return. In high-basis environments (during bull runs, basis can spike to 8% to 15% annualised), the trade is meaningfully more attractive.
Risks That Can Erode Basis Trade Profits
The trade looks risk-free. It is not.
Funding Rate Risk on the Short Leg
If you use a perpetual future instead of a fixed-expiry quarterly, you face funding rate risk. In a positive funding environment, your short leg pays funding to the longs. That funding cost can eat into or exceed the basis profit.
For pure basis trading, prefer fixed-expiry quarterly futures over perpetuals.
Margin Call Risk on the Futures Position
Even though the trade is delta-neutral overall, the futures leg has its own margin requirement. If BTC rallies sharply, the futures short loses mark-to-market value. Margin can be called even though your spot is gaining at the same time.
You need enough free cash to meet margin calls without being forced to close the futures leg prematurely. Plan for at least 2x to 3x the initial margin as a buffer.
Exchange Risk: What Happens If One Platform Fails
If your spot and futures are on the same exchange, an exchange failure exposes both legs. If they are on different exchanges, you face cross-platform reconciliation risk during volatility (basis can blow out temporarily, increasing margin pressure on one side).
Most retail basis traders keep both legs on a single trusted platform. Institutional desks often split across platforms with strict risk controls.
Setting Up a Cash & Carry Trade on CoinSwitch Pro
The practical workflow.
Buying Spot BTC on CoinSwitch
Open the BTC/INR spot market on CoinSwitch. Buy the quantity you want (e.g., 0.077 BTC for the ₹5L example above). Use a limit order at or near the current best ask to minimise slippage.
Shorting the Quarterly Futures Contract
Switch to the futures section. Select the quarterly BTC contract. Place a short order for the same quantity as your spot purchase. Confirm net delta is close to zero in your position dashboard.
Monitoring and Managing the Position
Watch margin utilisation on the futures leg. If BTC rallies hard, top up margin to avoid liquidation. Resist the urge to close the futures leg early, you want the convergence at expiry.
If basis widens further (futures premium grows) before expiry, you can choose to add to the position to lock in higher carry. If basis collapses to negative (rare), you can choose to unwind early to keep the gain you have already accrued.
Cash & Carry vs Funding Rate Carry: Which to Choose?
Both are delta-neutral yield strategies. They differ in mechanics.
Cash and carry uses fixed-expiry futures. The return is locked in at entry. You wait until expiry for the convergence. Capital is committed for the contract duration.
Funding rate carry uses perpetuals. The return depends on the funding rate over time. It can be higher or lower than expected. Capital can be deployed and pulled flexibly.
For predictable income, cash and carry wins. For flexibility and potential upside in high-funding regimes, the funding rate carry is more dynamic.
Many traders run both simultaneously, allocating between the two based on which offers better current yield.
Tax Treatment of Basis Trade Profits in India
The basis trade is two positions, each with its own tax treatment.
The spot leg: when you sell the spot BTC at expiry (or it is effectively settled), it is a VDA transaction taxed at 30% under Section 115BBH.
The futures leg: settlement at expiry is a separate VDA transaction taxed at 30%.
If both legs net to a profit, you pay 30% on the profit. The 1% TDS applies to gross transaction values.
This is a notable disadvantage versus stock basis trades, where similar arbitrage can be more tax-efficient. The conservative tax treatment for crypto basis trading reduces the net return meaningfully.
Speak with a qualified CA before scaling up. The classification (VDA vs business income) affects the effective tax rate.
Key Takeaways
Basis trading is a clean, delta-neutral way to earn yield in crypto markets when the futures-spot spread is wide. Buy spot BTC, short quarterly futures, hold to expiry, collect the basis.
The trade is near-deterministic only on paper. In practice, margin calls, exchange risk, and the 30% VDA tax compress the net return. Fixed-expiry quarterly futures are cleaner than perpetuals (which add funding rate variability).
For Indian traders on CoinSwitch Pro, basis trading remains a useful tool when annualised basis exceeds 8% to 10%. Below that, the operational complexity and tax friction often do not justify the effort.
FAQs
Is basis trading risk-free?
No. It is delta-neutral on price but exposed to margin calls, exchange risk, basis blow-outs, and counterparty issues. Lower risk than directional trading, not zero risk.
How much capital is needed for a meaningful basis trade?
At least ₹2,00,000 to ₹3,00,000 to absorb fees, TDS, and have a buffer for margin calls. Smaller capital makes the friction dominant.
What is a good basis to enter at?
Annualised basis above 8% is attractive after fees and tax. Above 12% is excellent. Below 5% rarely justifies the operational cost.
Can I use perpetuals instead of quarterly futures?
Yes, but funding rate variability adds uncertainty to the return. Quarterly futures are cleaner for true basis trading.
How is basis trade profit taxed in India?
Each leg is a VDA transaction. The net profit is taxed at 30% under Section 115BBH (conservative interpretation). 1% TDS applies on gross transaction values.
Can I unwind a basis trade before expiry?
Yes. Close the futures short and sell the spot. You lock in the basis movement to that point, but you may forgo some of the convergence profit.
Disclaimer: This article is for educational purposes only. It does not constitute investment, financial, tax, or legal advice. Crypto futures and options are high-risk products. Past performance and example calculations are illustrative and not predictive of future returns. Always consult a SEBI-registered investment adviser or a qualified tax professional before trading. INR examples assume hypothetical price levels and may not reflect current market conditions on CoinSwitch Pro.
