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Neutral strategy · Interactive payoff

Put Calendar Spread payoff calculator

Market outlook Near the strike

A same-strike put calendar shown here as its expiration-leg approximation.

Interactive position

Build the legs

SideInstrumentQtyStrikePremium
Maximum profit—
Maximum loss—
Break-even—
Put Calendar Spread payoff at expirationPayoff changes across possible underlying prices based on the editable legs below.
Profit / loss at expirationPer complete position · 100 shares per option contract
Expiration scenarios
Price at expiryMoveProfit / loss

Position structure

Default legs

  1. Buy 1 100 put at 7 premium
  2. Sell 1 100 put at 4 premium

Reading the result

Expiration payoff only

The graph recalculates from the visible legs. It is not a price forecast and does not model outcomes before expiration.

Model boundary

This calculator uses intrinsic value at expiration and entered premiums. It excludes implied volatility, Greeks, time decay before expiration, fees, tax, dividends, liquidity, margin, assignment and exercise behavior. Educational illustration only—not financial advice.