Self Assessment 2025/26: a calm checklist before 31 January

The online deadline for 2025/26 returns is 31 January 2027. Here is what to gather now so January is quiet, not frantic.

The online deadline for 2025/26 returns is 31 January 2027. Here is what to gather now so January is quiet, not frantic.

Sole traders and landlords with qualifying income over £50,000 joined MTD in April 2026. The £30,000 and £20,000 groups follow in 2027 and 2028.

Both structures can work well. The right one depends on your profits, your plans and how much admin you are happy to take on.

Every legitimate expense reduces the profit you pay tax on. Here are the costs people most often forget, and the rules that apply.