Sole Traders & Small Business

Filing a Self-Assessment tax return is a fact of life for self-employed individuals, small business owners and freelancers. Get it right and it's straightforward. Get it wrong, or leave it too late, and it becomes stressful and expensive. This guide covers who needs to file, what you'll need, how the process works step by step, and the significant change that arrived in April 2026 with Making Tax Digital. It's part of our series of simple explainers designed to make tax make