What currency is margin calculated in?

Yes, you can select your base currency when completing the application. The base currency does not need to be the same that you deposit into your account.

Once the account has been opened, it is possible to change the base currency in Client Portal…

The base currency is an important aspect of your Interactive Brokers (IBKR) account. It affects various account features and operations. Here's what you need to know about base currency, how to change it, and its effects on your account:

• Changing Your Base Currency:…

Projected Overnight Margin is the overnight margin requirement in the base currency of the account based on current margin requirements, which are subject to change.

Look Ahead Margin is the projected margin requirement as of the next period's margin change in the base currency of the account based on current margin requirements, which are subject to change. This value depends on when you are viewing your margin requirements…

An IRA account may trade products denominated in a currency other than the USD Base Currency, but such accounts are not allowed to borrow cash in any currency. Therefore, if you are looking to purchase a product denominated in a currency other than the Base Currency, you would need to first convert your Base Currency into the denominated currency of that product. …