UK Career FAQ · 2026 Guide
How Much Tax Do I Pay UK 2026/27? Complete Breakdown
What it means
UK income tax is a percentage of your earnings above the personal allowance. The amount you pay depends on which tax bands your income falls into. For most UK employees, tax is automatically deducted through PAYE — you don't need to file a return unless you have additional income beyond standard salary.
How it works
Tax is calculated cumulatively across the tax year (6 April to 5 April). Each pay period, your employer applies your tax code (typically 1257L for the standard personal allowance) and deducts income tax + NI before paying you. HMRC reconciles at year-end via your P60. If you've over- or under-paid, a P800 letter explains the position and recovery method.
What to do
Check your tax code matches your circumstances. Use our take-home pay calculator to verify your net pay matches expectations. If you have benefits in kind (company car, private medical), ensure your code reflects them via P11D. For high earners between £100k-£125k, the personal allowance taper creates a 60% effective marginal rate worth understanding.
Common mistakes
Most common UK tax mistakes: (1) Not realising the £100k taper creates the 60% trap. (2) Failing to claim back overpaid tax via P800 or self-assessment. (3) Not checking tax code after job changes. (4) Missing the £30,000 tax-free redundancy allowance. (5) Failing to use ISA/pension allowances strategically.
Worked example
Sarah earns £55,000. Personal allowance £12,570 covers £0-£12,570 (£0 tax). Basic rate £12,571-£50,270 = £37,700 × 20% = £7,540 tax. Higher rate £50,271-£55,000 = £4,730 × 40% = £1,892 tax. Total income tax: £9,432. NI: 8% × (£50,270-£12,570) = £3,016 + 2% × (£55,000-£50,270) = £94.6 = £3,110.6. Net pay: £42,457.
Recruiter pro tip
Salary sacrifice into pension is the single most tax-efficient move for UK earners — particularly in the £100k-£125k 60% trap band. A £20,000 sacrifice for a £120k earner can save £12,000+ in income tax + NI. Use our salary sacrifice calculator to model the impact.
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