When you hold a futures contract, you do not pay or receive money in the form of interest. So just ignore whatever lead you to that conclusion. You would know this yourself if you have ever held a futures contract.
%% Good guess, seldom is anything free. But my banker dad caught plenty of fish\ with free fish bait. He preferred Eagle Claw gold hooks. So never say nothing is free\LOL Cash Coyne of Bright Daytrading Co disclosed leverage is a two edged sword. I did have some one give me some free Tulip Time stainless steel flatware, they got it thru a bank promotion....................................................