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InteractiveBrokers: How to calculate overnight commissions for CFD?
IB's overnight financing cost for US CFDs below $100,000 is the Benchmark Rate + 1.5% for long positions and the Benchmark Rate -1.5% for short positions. You can check the IB CFD Contract Interest for their full list of financing costs for share CFDs. IB's commissions  for an executed trade (where your monthly volume is below $300,000) is $0.005 per share with a minimum per order of $1.00. Commissions and overnight financing are 2 different fees, the overnight financing is charged because CFDs are leveraged. An order is just that, it is not a trade. It means your order has not been executed yet and is still an active order which you have not paid any commissions for yet. Regarding the orders that persist overnight, an example might be, you place an order to buy to open 200 CFDs. If only 100 CFDs are traded on that day, and the remaining 100 CFDs of your order remains active overnight, it will be considered a new order for the purposes of determining commission minimums.