Hi: I've searched through all the threads on IB's EFP and have crunched the numbers in my own spreadsheet. In summary, to earn interest using EFPs, you SELL the efp in TWS. (Right?) Now, here's the real question: How does IB handle the expiration? Do you have to close it out yourself before expiration the way you have to with other futures contracts. Or will IB flatten the whole thing for you on expiration. Thanks for any answers to this question. -eLindy PS: I decided to post this question here instead of opening a trouble ticket with IB in hopes of getting a quicker answer.