CFD trading platforms like Saxo Markets and Interactive Brokers charge a commission. Other CFD brokers like IG, CMC Markets and City Index charge a spread.  Widening the spread is equivalent to charging a commission. It is not normal for CFD brokers to charge private clients and retail traders a commission for CFD trading. Normally, it’s only DMA (direct market access) CFD brokers that charge commission. One of the advantages of trading CFDs is that the commission is built into the price you buy and sell at, so there is no need for additional calculations to determine your profit and loss after the commission is charged. The disadvantage of this is that when trading CFDs, the bid-offer spread will be wider, so the market needs to move further before a trade turns profitable.