Top 10 Self Assessment Mistakes UK Sole Traders Make

Goforma28 Apr, 2026Finance

Self assessment mistakes can cost UK sole traders time, money, and peace of mind. A small error on your tax return can lead to penalties, delays, or even an HMRC enquiry. Many of these issues are easy to avoid once you know what to look for. This guide breaks down the most common self assessment mistakes sole traders make and how to fix them before they become expensive problems.