10 Common Tax Mistakes UK Side Hustlers Make (And How to Avoid Them)
1. Misunderstanding Allowable ExpensesOne of the most frequent tax pitfalls for UK side hustlers is misunderstanding what counts as an allowable business expense. This lack of clarity often leads to two extremes: some over-claim by including personal or non-permissible costs, drawing unwanted attention from HMRC, while others under-claim and end up paying more tax than…