Self Assessment Guides & Tax Tips

• Self Assessment

Self Assessment Software Prices Compared (October 2026)

What Is a Self-Assessment Tax Return? A Beginner’s Guide

What Happens If You Miss the Self-Assessment Deadline?

Tax Return Checklist: Everything You Need Before Filing

• Self Assessment

Self Assessment Deadline 31 January 2027: Key Dates for 2025/26

• Error 1046 Guide

Error 1046 -What It Means and How to Fix It

How to Add Self Assessment to Your Government Gateway Account

Government Gateway User ID: What It Is and How to Get One

What is a P60 and Why Is It Important for Your Tax Filing?

What is a P11D? A Guide for Employees

SA109: Residence, Split Year and the FIG Regime

How to Amend a Self Assessment Tax Return

Trust Income (SA107)

SA106 Foreign Income: Who Needs It and How to Fill It In

Property Income (SA105)

Partnership Income (SA104)

Self Employment (SA103)

SA102 Employment Pages: Box-by-Box Guide for 2025–26

Self Assessment (SA100)