For self-employed work, cash received, turnover and taxable profit can be different numbers. The strongest plan keeps records, a cautious income month, current-year tax reserve and the next Self Assessment dates in view at the same time.
Use this sequence to organise your own records. It does not replace accounting software, a tax return, VAT records, HMRC notices or professional tax advice.
Suggested sequence
Work through the decision in order
- 1Open tool
Organise records and recurring dates
Work through income, expense, profit-forecast and Self Assessment prompts without pretending to file a return.
- 2Open tool
Plan from the quieter month
Test a conservative income month, annual costs and an accessible buffer before relying on stronger months.
- 3Open tool
Estimate a current-year reserve
Model taxable profit, tax already paid and a potential January/July cash pattern with stated exclusions.
- 4Open tool
Make payment dates visible
Use confirmed return or HMRC-account figures to map a balancing payment and any payments on account.
Keep the plan grounded
- Do not use turnover as taxable profit; update the forecast from actual records.
- Check HMRC’s statement for liabilities and payments on account rather than inferring them from a previous estimate.
- VAT, student loans, capital gains, partnerships, company tax and reliefs may need separate treatment.
Questions about this path
What comes before the tax calculation?
Current records and a taxable-profit forecast. Without those, even an accurate rate table can give a misleading reserve.
Are payments on account extra tax?
No. They are usually advance payments toward a later bill, but they can materially change cash due in January and July. Check the HMRC statement and rules for your case.
Does this work for a limited company?
No. The recordkeeping and Self Assessment sequence is aimed at sole traders and partners. Limited companies have separate accounting, Corporation Tax and filing obligations.