What is a Bull Call Spread?
A Bull Call Spread reduces the cost of a bullish call option position by simultaneously selling a higher-strike Call. The credit from the sold Call offsets the debit of the bought Call — cutting your total cost significantly. You keep most of the upside, but cap it at your target price. Both maximum profit and maximum loss are fully defined from the moment you enter.
Nifty is at ₹22,000. You want to buy the 22,000 Call, but it costs ₹200 per unit — ₹15,000 for one lot. That's a lot to risk. So instead, you also sell the 22,500 Call for ₹90. Net cost drops to ₹110 × 75 = ₹8,250 — 45% cheaper. Your maximum profit if Nifty reaches 22,500 is ₹29,250 — a 255% return on just ₹8,250. Yes, gains above 22,500 are capped. But how often does Nifty go dramatically past your target in 30 days anyway?
Like buying a train ticket to a specific destination rather than an open-ended pass. You pay less because you've agreed on exactly where you're going. If the train goes further, good for others — you get off at your stop with your profit, having paid far less.
At a Glance
Max Profit
(Width − Net Premium) × Lot
Max Loss
Net Premium Paid only
Breakeven
Lower Strike + Net Premium
Type
Debit Spread
How to Set It Up
Both legs must be placed simultaneously with the same expiry:
| Action | Type | Strike | Expiry | Qty |
|---|---|---|---|---|
| Buy | Call (CE) | Lower Strike — ATM or slightly OTM | Same expiry (30–45 DTE) | 1 Lot |
| Sell | Call (CE) | Higher Strike — OTM (your price target) | Same expiry | 1 Lot |
Payoff at Expiry
The characteristic trapezoid shape — loss is flat below the lower strike, profit grows between the two strikes, then caps at maximum gain above the higher strike.
Payoff Chart
📊 Bull Call Spread — Payoff Chart + P&L Calculator
Index Price: 22000 · Buy Call Strike: 22000 · Sell Call Strike: 22500 · Buy Premium: 200 · Sell Premium: 90 · Lot Size: 75 · Price at Exit: 22400
Understanding the Greeks
- Delta (net positive, 0.25–0.45): You still benefit from the stock rising, just with a ceiling. Lower net delta than a plain Long Call because the sold Call partially offsets it.
- Theta (mildly negative): Less severe than a plain Long Call — the sold Call's positive theta partially offsets the bought Call's daily decay. Time is still your enemy, just less so.
- Vega (positive but reduced): The sold Call sells some IV back, reducing exposure to volatility changes. In high-IV environments, this is actually beneficial.
- Gamma (moderate): Lower gamma risk than a plain Long Call. Good for directional exposure without extreme sensitivity to sharp moves.
When Should You Use This Strategy?
✓ When to Use / ✕ When to Avoid / ◉ IV / ◷ DTE
4 use items · 3 avoid items
Worked Example
Nifty at ₹22,000. Bullish — targeting 22,500 in 30 days. Instead of a plain 22,000 CE for ₹200 (₹15,000/lot), you build a spread.
⊞ Trade Table
2 legs · 0 scenarios
Net cost: ₹110 × 75 = ₹8,250 (vs ₹15,000 for a plain Long Call — 45% cheaper)
Breakeven: ₹22,000 + ₹110 = ₹22,110
Max profit: (₹500 − ₹110) × 75 = ₹29,250 if Nifty ≥ 22,500
⊞ Trade Table
0 legs · 5 scenarios
Key Points to Remember
- The sold Call subsidises your bought Call — you enter the same bullish trade with less capital. The trade-off (capped upside) is worth it when you have a specific, realistic price target.
- Maximum profit is only achieved when the stock expires at or above the higher strike. You don't need an explosive move — just reaching your target is enough.
- Select spread width based on your realistic target. A 300–500 point spread on Nifty is typical for a 30-day trade.
- Close at 50% of max profit. The remaining profit isn't worth the added gamma risk. Book it and redeploy.
