The idea

You expect Nifty to fall to 24,700 by Tuesday. Buying a naked put costs ₹200. Instead, buy the 25,000 put AND sell a 24,700 put. Net cost drops, upside caps at your target — better risk/reward, same view.

A worked example

Example

Nifty 25,000 / 24,700 bear put spread

Nifty at ₹25,000. You expect a drop to 24,700 by Tuesday.

Buy 1 Nifty 25,000 put at ₹200 → −₹5,000
Sell 1 Nifty 24,700 put at ₹80 → +₹2,000

Net debit: ₹3,000

Payoffs at expiry:

Nifty at 24,600 (below both strikes — max profit):

25,000 put worth 400 → +₹10,000
24,700 put (short) worth 100 → −₹2,500
Net: 10,000 − 2,500 − 3,000 = +₹4,500

Nifty at 24,800:

25,000 put worth 200 → +₹5,000
24,700 put worthless
Net: 5,000 − 3,000 = +₹2,000

Nifty at 25,100 (worst case):

Both worthless
Loss = ₹3,000

The math

Bear put spread formulas

Net cost = Long put premium − Short put premium

Max profit = (Long strike − Short strike) × Lot − Net cost = Spread width × Lot − Net cost

Max loss = Net cost

Break-even = Long strike − (Net cost ÷ Lot)

When to use it

Same as bull call spread but bearish:

Moderate bearish view with specific downside target
Options expensive, want to cut cost
Defined risk/reward preferred
Alternative to shorting stocks (avoid margin/borrow requirements)

Choosing strikes

Long put: ATM or slightly ITM (0.5-1% ITM)
Short put: at your downside target
Width: 1-3% of underlying

Comparison to naked long put

	Long put only	Bear put spread
Cost	₹5,000	₹3,000
Break-even	24,800	24,880
Max profit	24,800 × 25 = large	₹4,500
Max loss	₹5,000	₹3,000
Profitable range wider?	Yes	No (limited)

You save 40% on cost, get a closer break-even, but cap max profit.

When NOT to use bear put spreads

Expecting a crash (naked put captures much more downside)
Very small time to expiry
Underlying already fell — cost/reward gets worse

💡 Direction matters, magnitude matters more

If you’re expecting Nifty to fall 5%, a spread capped at 2% down leaves money on the table. Match your spread width to your expected move — not too small, not too big.

Managing the trade

Underlying breaks below short strike early: at max profit — close and take it (don’t wait for expiry).
Sideways between strikes: hold to expiry, theta helps somewhat.
Underlying rallies: cut losses at ~50% loss of premium, or hold to expiry (loss capped).

Bull put spread — the credit version

Instead of paying a debit, sell premium:

Sell a higher-strike put
Buy a lower-strike put (protection)

Net credit received. Profit if the underlying stays above the short strike. Max loss = width minus credit. This is a bull put spread — bullish, credit-collected, defined risk. Popular alternative to cash-secured puts.

The bear call spread is its mirror: sell an OTM call, buy a further-OTM call. Bearish, credit-collected, defined risk.

Advanced: bear call spread (credit version)

Example

Nifty 25,300 / 25,500 bear call spread

Nifty at 25,000, mildly bearish view. Sell 25,300 call @ ₹75, buy 25,500 call @ ₹30.

Net credit: (75 − 30) × 25 = ₹1,125 collected

Max profit: ₹1,125 (Nifty stays below 25,300 at expiry) Max loss: (200 − 45) × 25 = ₹3,875 (Nifty rallies past 25,500) Break-even: 25,300 + 45 = 25,345

Same view (bearish), different vega tilt. Use bear put spread when IV is low; bear call spread when IV is high.

The four vertical spreads at a glance:

	Bullish view	Bearish view
Debit spread (low IV)	Bull call spread	Bear put spread
Credit spread (high IV)	Bull put spread	Bear call spread

Master these four and you can express any directional view with defined risk, IV-optimized.

Try it

Payoff calculator → “Bear put spread” preset. Notice the payoff line mirrors the bull call spread — inverted around vertical.