I'm not the target audience, but I can read it. Love the anchor names!
However, my first language is English. I do struggle a lot with Dutch taxes as my speaking is generally better than reading/writing. I wonder if it would be worth you offering an English localization of your site? I know there are a lot of ZZP'ers in the Netherlands whose first language is not Dutch (my gf works for a recruitment company, and they recruit heavily from Italy, Spain, and India).