Tag
self assessment
3 tools — updated for the 2026/27 tax year
- Income Tax Calculator
See your full tax breakdown by band, including the personal allowance taper.
Tax calculators - Payment on Account Calculator
Work out your January and July Self Assessment advance payments based on last year's tax bill.
NI & self-employment - Property Allowance Calculator
Check whether your rental income is covered by the £1,000 property allowance or if actual expenses are better.
Property & CGT
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