Based on current information from our third party tax reporting agents, Margin Interest paid is not reported to the IRS.
However, the amount of margin interested you paid is provided as a courtesy to you on the last page of the 1099 under "Other Useful Information" and on the Calendar Year Activity Statement.
IBKR also offers tax-advantaged account types for clients who are U.S. citizen, such as IRA accounts. Please click here to learn more about these account offerings.