How is this calculated?

For a long option, net cost equals the price to open the new option minus the price to close the current one, multiplied by contracts and the 100-share multiplier. For a short option, net cost equals the price to close the current option minus the price to open the new one, multiplied by contracts and the multiplier. A positive result is a net debit, a negative result is a net credit.

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How much does it cost to roll my option position to a later expiration?

Q: How much does it cost to roll my option position to a later expiration?

Calculates the net dollar debit or credit of rolling an option position to a later expiration, based on the price to close the current option and the price to open the new one, for long or short positions.

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Enter the Roll

Use the prices you'd actually get filled at right now, not the mid-price on the chain.

Your Result

Fill in the fields on the left and click Calculate to see the exact net debit or credit of this roll.

How this is calculated

A roll closes your current option and opens a new one, usually at a later expiration, in one combined transaction.
A positive number means the roll cost you a net debit. A negative number means you collected a net credit for rolling.
Rolling for a credit lowers your total cost basis on the position. Rolling for a debit adds new capital at risk on top of the original trade.
Enter the total cost of prior rolls to see the cumulative cost of rolling this same position more than once. Use the roll checklist below before you place the trade, and the roll tracker to keep a running log across multiple rolls.

Risk & liability disclaimer: This calculator produces a mathematical estimate based on the numbers you enter. It is not financial advice and does not guarantee any trading outcome. Trading involves risk of loss, and past position sizing decisions do not predict future results. Trading Habits is not a broker-dealer, registered investment adviser, or tax professional, and is not affiliated with any broker, exchange, or data provider. We do not guarantee this tool is error-free or suitable for your situation - always verify results independently and consult a licensed professional before making any trading or financial decision. You could lose some or all of the capital you trade with.

How much does it cost to roll my option position to a later expiration?

Enter the Roll

Your Result

How this is calculated

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