Which account types are eligible to earn interest?

Currency conversion orders can only be executed with the funds resting in the Securities segment of your Interactive Brokers Universal account. If you have an approved UK Regulated account segment and trade any CFDs, OTC Metals or Non-US Index options, then the cash in that UK Regulated account segment must be manually transferred by the account holder back to the Securities segment in order to convert that cash to a different currency. Please remember that the "Total" cash amounts for each currency displayed in your trading screen are the net amounts between all of your account segments: Securities account, Commodities account and UK Regulated account…

In an IBKR Universal account a security like a Stock, Bond or Treasury resting in the account's Securities segment can not be moved into the account's Commodities segment to help meet a margin requirement for an open Future contract.  If there is positive unpledged cash your IBKR Universal account's Securities segment then that cash could be moved over to the Commodities segment.  In addition, if the Securities segment is holding marginable stock and there is positive Excess Equity then a cash loan can be created in the Securities segment and that cash from the loan can be transferred to the Commodities segment to meet a future contracts margin requirement.  Note that a cash loan created from the Available Funds in the Securities segment can not exceed the amount of the Available Funds at that time.  In addition if an account's Excess Equity goes negative then the account is not meeting the minimum Maintenance Margin requirements and IBKR can start Liquidating positions to ensure the account remains margin compliant. …

For accounts contracted by the triparty agreement and carried by IBLLC, the account has two segments: securities segment and commodities segment. The regulation of securities and commodities products and brokers in the U.S. is administered by two distinct federal agencies, the Securities and Exchange Commission (SEC) for securities including stocks, ETFs, bonds, options and mutual funds and the Commodities Futures Trading Commission (CFTC) for commodities including futures and options on futures. Please see…

For accounts contracted by the triparty agreement and carried by IBLLC in the US the account is authorized to trade both securities products and commodities/futures products and therefore consists of two underlying accounts or account segments: a securities account ("IBKR securities") governed by rules of the U.S. Securities and Exchange Commission (SEC) and a futures account ("IBKR futures") governed by rules of the U.S. Commodity Futures Trading Commission (CFTC)…