The 5% is separate from the payement fees, so the total is around 8%. "Kickstarter collects a 5% fee from the project’s funding total if and only if a project

The 5% is separate from the payement fees, so the total is around 8%. "Kickstarter collects a 5% fee from the project’s funding total if and only if a project is successfully funded. Amazon (our payments processor) also charges credit card processing fees that generally work out to 3-5%. "