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United Kingdom · 29 tools

Tax & Salary calculators

Work out the bill and the cash you keep — then open the tool that matches your country and tax year.

Start here, then explore the groups below.

Separate the tax you pay from the cash you keep

Tax tools answer a different question from a payslip: which band, which deduction, and what happens if income or contributions move. Treat the result as a planning estimate until you have checked the current official bands for your country and tax year.

  1. Confirm the tax year and residency rules the calculator is modelling.
  2. Change one input at a time — salary, pension or a taxable event — so you can see which lever moved the bill.
  3. Use the linked take-home or payroll tool when you need net pay rather than the tax line alone.

From band to take-home

Tax and salary calculators are most useful when the real question is not your headline income, but what you actually keep. A change in salary, deductions, pension contributions, dividends, or employment type can all shift the answer in ways that are easy to underestimate when you look only at gross figures. This hub brings those decisions into one place so you can compare them without rebuilding the maths from scratch each time.

The calculators here are arranged around common decisions: understanding take-home pay, reviewing tax bands and deductions, and comparing more specialist scenarios such as self-employment, capital gains, salary sacrifice, or pension contributions. That makes it easier to move from a simple payslip question to a broader planning view, especially when multiple deductions interact.

These tools are particularly useful before accepting a pay offer, reviewing freelance income, planning year-end actions, or checking how a pension or benefits change might affect net pay. They are not a replacement for payroll software or formal advice, but they are extremely effective for spotting which variables matter and which options are worth a closer look.

Start with the calculators that match your immediate question, then use the supporting tools to pressure-test the result. In practice, the best workflow is to compare gross and net pay first, then move into tax-specific tools and guides so you understand not only the answer, but also why the answer changes when the inputs move.

Guides that support this category

Use these when you need more context before choosing a calculator.

Take-home pay and pay conversion5

Use these tools to compare salary, hourly pay, overtime, and net income before or after tax.

Income tax and deductions5

These calculators help you understand the impact of income tax, NI, pension deductions, and salary-sacrifice choices.

Self-employed and specialist tax planning6

Use these when your situation involves dividends, gains, corporation tax, inheritance planning, or regional tax differences.

More tools in this category13

Use these supporting calculators when you need a more specific comparison or a second opinion on the same decision.

Universal CreditEstimate Universal Credit for 2026/27 using published standard allowances, child and LCWRA elements, housing costs you enter, the work allowance and 55% taper. Planning only — not a DWP award.Child BenefitEstimate 2026/27 Child Benefit and the High Income Child Benefit Charge using the £60,000–£80,000 adjusted-net-income taper.Marriage AllowanceCheck if you qualify for Marriage Allowance and calculate your tax saving. Married couples and civil partners could save up to £252 per year.Pension Tax ReliefCalculate your pension tax relief for 2026/27. Find out how much HMRC adds to your pension contributions at basic, higher, and additional rate.Rental Income Tax Calculator (UK)Calculate how much income tax you owe on UK rental income. Accounts for allowable expenses, your personal allowance, and 2026/27 tax bands.Pension Annual Allowance CheckerCheck a simple 2026/27 UK pension annual-allowance planning figure, including the stated taper thresholds and an entered carry-forward amount.Adjusted Net Income Threshold ExplorerEstimate adjusted net income, Personal Allowance taper, Child Benefit charge and distance from the £60,000 and £100,000 UK thresholds.Self-Employed Tax Set-Aside PlannerEstimate a monthly UK tax reserve, Class 4 NI, balancing payment and January and July payments-on-account cash targets for 2026/27.Taxable Savings InterestEstimate 2026/27 UK tax on taxable savings interest using the selected tax band and Personal Savings Allowance; ISA interest is excluded.Self Assessment Tax Payment CalendarPlan an entered Self Assessment tax bill, balancing payment and payments on account across the next 31 January and 31 July deadlines.Self-Employed Records & Deadline ChecklistA local-only UK checklist for self-employed records, tax-profit forecasting and the recurring 5 October, 31 October, 31 January and 31 July Self Assessment cycle.Company Car BIKEstimate 2026/27 UK company-car benefit-in-kind tax from P11D price and BIK percentage. Zero-emission cars use 4%; enter HMRC’s published percentage for other cars.Pension Lump SumEstimate a UK pension lump sum: 25% tax-free up to the remaining lump sum allowance (£268,275 standard), with tax on the rest at the rate you enter.