Useful next calculations
Rates and sources
UK tax rates and thresholds, as published by HMRC. Scotland and Wales have devolved rates for income tax and property transactions.
Source: HMRC — Tax rates. Check the linked guidance and any live quote before acting.
When to use this calculator
- Before accepting a pay change, bonus, pension contribution or salary-sacrifice option.
- When you want a simple take-home estimate before payroll or filing.
- When you are approaching the £100,000 income level and want to see the personal allowance taper.
- When you need to convert between hourly, monthly and annual pay.
A worked example
These are the example figures the calculator opens with.
| Input | Value |
|---|---|
| Income records reviewed | Not yet |
| Profit forecast and reserve reviewed | Not yet |
| 31 January plan reviewed | Not yet |
For those figures the calculator returns:
- Core prompts reviewed: 0.00
Method & assumptions
This local-only checklist helps a sole trader or business partner organise the recurring recordkeeping and Self Assessment cycle. It covers income and expense evidence, accounting method, a taxable-profit forecast, the usual registration, paper, online and payment-on-account dates, plus the next practical records action.
It uses the standard deadline pattern rather than claiming to know an individual's exact obligation. HMRC's online account, notices, business structure and accounting method are authoritative.
The checklist is not tax software, a return or a complete VAT, payroll, partnership or company compliance review. Use your records, HMRC guidance and a qualified accountant or tax adviser where the position is complex.
Common mistakes
- Entering gross income when you really want take-home pay, or vice versa.
- Ignoring pension contributions, deductions or local tax rules that change the result.
- Comparing monthly and annual figures without standardising them first.
- Overlooking National Insurance or student-loan plan differences that apply to you.
What to do next
- Check the same scenario with related pay or deduction calculators.
- Keep a copy of the assumptions so you can compare the next tax year or pay period.
- If you are self-employed, compare this result with the self-employment tax calculator.
- Check whether a small pension contribution change moves take-home pay more than you expect.