What Is a Futures Contract? A Complete Beginner's Guide

You’ve learned what derivatives are, why they exist, and how margin works. Now it’s time to apply all of that to a real, tradeable instrument: the Futures contract. This lesson walks through its exact structure and a complete worked example.

The Structure of a Futures Contract

A Futures contract has a precise, standardized structure, defined by the exchange (not negotiable between individual traders):

• Underlying asset — the stock or index the contract is based on (e.g., Nifty 50, Reliance Industries)
• Lot size — the fixed quantity of the underlying that one contract represents
• Futures price — the price agreed for the future transaction (this is what moves as you trade, similar to a stock price)
• Expiry date — the specific future date the contract settles (in India, typically the last Thursday of the expiry month for most contracts, subject to exchange rules)
• Settlement type — cash-settled (a rupee difference is paid) or physically-settled (actual delivery), depending on the specific contract

Going “Long” vs Going “Short”

Because a Futures contract is an obligation for both a buyer and a seller, every contract has two sides:

• Going long — you agree to buy the underlying at the Futures price at expiry. You profit if the price rises above your entry price.
• Going short — you agree to sell the underlying at the Futures price at expiry. You profit if the price falls below your entry price.

    LONG Position                          SHORT Position
  (bought Futures)                       (sold Futures)
        │                                        │
   Price rises  →  PROFIT                   Price falls  →  PROFIT
   Price falls  →  LOSS                     Price rises  →  LOSS

Crucially — and unlike buying a stock, where “shorting” requires a separate, more complex borrowing mechanism — going short a Futures contract is just as straightforward as going long. You simply place a sell order first, without needing to already own the underlying.

Futures Profit and Loss: A Zero-Sum Relationship

Every Futures trade has exactly two sides, and their profit/loss is mirror-image, zero-sum: whatever the long side gains, the short side loses, in exactly equal measure (before accounting for brokerage and other charges).

Futures P&L Formula (Long Position):
   Profit/Loss = (Exit Price − Entry Price) × Lot Size

Futures P&L Formula (Short Position):
   Profit/Loss = (Entry Price − Exit Price) × Lot Size

Worked Example: Going Long 1 Lot of Nifty 50 Futures

Let’s use simplified, illustrative numbers (actual lot size and prices vary and should always be checked live):

1. Nifty 50 Futures is trading at 1,000 (a simplified illustrative price for this example — real Nifty Futures trade at much higher levels).
2. Assume the lot size is 50 (illustrative — always check the current, actual lot size before trading).
3. You believe Nifty will rise, so you go long 1 lot at 1,000.
4. Suppose, at expiry (or whenever you choose to exit), the price has risen to 1,050.
5. Your profit = (1,050 − 1,000) × 50 = ₹2,500.
6. If instead the price had fallen to 950, your loss would be = (950 − 1,000) × 50 = −₹2,500.

Note: this example ignores brokerage, taxes, and other charges for simplicity — real trades always involve some additional costs, covered later in this course.

Real-Life Example: Why Someone Might Go Short

Suppose a trader closely follows a specific auto company and believes, based on weakening sales data, that its stock price will decline over the next month. Instead of needing to borrow and short-sell the actual stock (a more complex process), they can simply go short 1 lot of that stock’s Futures contract. If the price falls as expected, they profit from the difference — the exact mirror of the long-side worked example above, just in the opposite direction.

Analogy: A Pre-Agreed Price for a Future Delivery

Think back to the wedding/gold example from Lesson 8: imagine two neighbors agree today that, in one month, one will sell the other 10 grams of gold at today’s price of ₹6,000/gram — regardless of what gold actually costs in a month.

• If gold rises to ₹6,500/gram in a month, the buyer benefits (they get gold at ₹6,000 instead of paying the higher ₹6,500 market price) — they’re “long” that agreement.
• The seller, obligated to deliver at ₹6,000 even though the market price is now ₹6,500, effectively loses that difference — they’re “short” that agreement.
• If gold instead falls to ₹5,500/gram, the outcome flips: the seller benefits, and the buyer loses out relative to the market price.

This is, structurally, exactly how a Futures contract works — just formalized, standardized, and traded on a regulated exchange instead of a private handshake agreement between neighbors.

Common Beginner Mistakes

• Believing you must hold a Futures position until expiry. You can exit anytime during market hours — most active traders do exactly this.
• Not realizing that going short is just as accessible as going long. Unlike shorting a stock directly, shorting a Futures contract requires no special borrowing process.
• Underestimating potential losses. Because Futures losses (like gains) aren’t capped the way an Option buyer’s loss is, a poorly managed short or long Futures position can lose significantly more than a beginner might expect.
• Confusing the Futures price with the current spot price of the underlying, without understanding why (and by how much) they can differ — covered fully in the next lesson.
• Ignoring lot size, and miscalculating potential profit/loss by assuming you can trade any arbitrary quantity.

Practical Tips

• Before placing any Futures trade, always confirm: current lot size, current margin requirement, and the exact expiry date — all three should be checked live, not assumed from memory.
• Practice the profit/loss formula on paper (or in a spreadsheet) with a few different hypothetical entry/exit prices until it feels automatic — this single formula underlies every Futures trade you’ll ever place.
• Remember that going short carries the same seriousness and risk as going long — it is not a “smaller” or “safer” version of trading, just the opposite directional bet.

Conclusion

You now understand the actual mechanics of a Futures contract — long vs short, lot size, expiry, and how profit and loss are calculated. This is the first fully "tradeable" instrument covered in this course, and everything about it — margin, mark-to-market, obligation for both sides — connects directly back to the previous three lessons. Next, we go one level deeper into Futures pricing itself: why the Futures price often differs slightly from the spot price, and what "cost of carry" actually means.