Where can I find information on margin and margin requirements?

Margin requirements affect how and when you can borrow, the type of deposits which may be required and the level of equity that you must maintain in your account. Failure to meet these requirements will result in becoming subject to liquidation of assets, either automated or manual, to bring the account back into margin compliance.  

Margin requirements are based on your Country of Legal Residence (COLR), the exchange where you want to trade and the product(s) you want to trade. You can use the following resources to learn more about trading on margin:

Additional Information

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Why was I liquidated?
How do I request an extension for a margin call?
Will IBKR delay liquidation while I deposit funds in my account?
What happens if my futures positions no longer meet the maintenance margin requirement, and how can I prevent liquidation?