Start your challenge!
Lots of fun challenges ranging in difficulty. Answers are fully explained and challenges can be restarted at any time. Get that perfect score and upskill your IR35 knowledge.
Challenges for all
Beginner to IR35? No problem. Need to know some specifics? You're in the right place. There's no 'Substitute' for these challenges!
BasicsWonder what IR35 stands for or why you need an SDS? We cover the basics and get you up to speed.
IR35 FAQsWe service tons of contractors and clients, we hear all sorts of concerns, we address them here.
Come outside, it's lovelyUnderstand how to work 'Outside IR35' and what it means for your clients and you.