Contractors need to carefully determine whether they fall inside or outside IR35, as this affects how their income is taxed and whether additional National Insurance contributions apply. Choosing the right trading structure — whether as a Sole Trader, Limited Company, or through an Umbrella Company — has both tax and compliance implications. While operating through a Limited Company can be more tax efficient, it also carries greater responsibilities and IR35 considerations. If HMRC finds that a contractor has incorrectly operated outside IR35, penalties, interest, and backdated tax may apply. We can review your circumstances and provide clear, professional advice to ensure you remain compliant and tax efficient.