Comparing the trading costs of forex and CFDs is not easy. Not every broker publishes average spread data, and pricing structures vary. Based on our thorough, data-driven testing of each broker's commissions and fees, we found that IG offers better pricing overall for traders. Methodology: When testing each broker's commissions, fees, and pricing, we analyze multiple trade scenarios and award points based on the expansiveness (or inexpensiveness) of the broker's spreads. We then run multiple scenarios for different investor types, incorporating any miscellaneous fees, to determine an "all-in" cost per trade. Learn more about how we test.