what is "accrued interest" on IB?

On interactive brokers there is this "accrued interest"

For me it's now increasing at around $100 a day. WTF? How can it be this high? That's 30k a year. A 30% yearly interest?

I borrow less than 100k, so according to IB's low interest rate of maybe 4% or 5% a year, even if I maintain 2x margin every day I would get charged about $13 in daily interest, not $100

Am I misunderstanding it? I don't get it at all?

Submitted October 26, 2017 at 10:31AM by iderium http://ift.tt/2izGCNd