Educational Tool

Option Selling Margin Calculator

Use this simple planner to understand capital blocked, hedge cost, buffer capital, and estimated deployable risk. It is not a broker or exchange margin engine.

Total capital planned --

Enter values and calculate.

How to use this calculator

This tool helps visitors think through option selling capital. Broker margin is only one part of the plan. A trader also needs hedge cost, free cash buffer, and a maximum loss rule.

Use your broker's margin calculator for live order-level margin.
Add extra cash so mark-to-market movement does not force bad exits.
Prefer defined-risk structures when capital is limited.
Do not treat available margin as permission to use full size.