Use the Digital Record-Keeping Helper
A good next step if you want cleaner records before building a stronger set-aside routine through the year.
Tool
Tax Set-Aside Estimator
Use this planning tool to build a practical reserve target through the year, compare self-employed and property-only profit assumptions, and make tax planning feel less reactive.
Best use of this tool
Use it as a reserve-planning helper, not as a final tax bill
This tool works best when you want a practical amount to set aside through the year. It is designed to support planning decisions, not replace filing software, HMRC, or tailored advice.
Important limit
Self-employed profit and property-only profit should not be treated the same
This version lets you choose the profit type because Class 4 National Insurance applies to self-employed profits, not ordinary property-only income. Mixed situations still need more caution.
Interactive estimator
Estimate a practical yearly, monthly, and weekly set-aside target
Enter an estimated annual profit and choose the profit type to see a practical reserve target for 2026 to 2027 planning.
Estimate a practical set-aside amount
Enter an estimated annual profit and choose the profit type used by this version of the estimator.
This tool uses profit as the starting point, not turnover.
Helpful next steps
Keep reserve planning connected to records, software, and the wider MTD process
Browse software guidance
Useful once the planning side is clearer and the next question is how software fits into record-keeping and reporting.
Use Start Here
A useful route if you are still deciding whether your main question is about scope, records, deadlines, or software rather than set-aside planning alone.