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Use HM Revenue and Customs’ (HMRC) tax checker to get an estimate of how much Income Tax you should be paying.
Find out how much you need to put aside for your Self Assessment tax bill if you're self-employed by using HM Revenue and Customs' (HMRC's) self-employed tax calculator.
Estimate how much Income Tax and National Insurance you can expect to pay for the current tax year (6 April 2024 to 5 April 2025).
The estimated tax gap for the 2021 to 2022 tax year is at an all-time low of 4.8%.
If you’ve missed Self Assessment deadlines get an estimate of how much you’ll need to pay in penalties and interest
How to work out payments and when you should make them if your company’s annual taxable profits are between £1.5 million and £20 million.
Analysis of estimated Income Tax liabilities statistics
Check your Income Tax, Personal Allowance and tax code for the current tax year. Update details of your income from jobs and pensions.
HM Revenue and Customs (HMRC) statistics and methodological annexes relating to measuring tax gaps.
Upper Tribunal Tax and Chancery decision of Judge Ashley Greenbank and Judge Thomas Scott 22 April 2024
What to do if you need to pay more tax or you're due a refund, including P800 tax calculations from HM Revenue and Customs (HMRC).
11.5 million Self Assessment customers submitted their tax returns by the 31 January deadline
Understand your Self Assessment tax bill - tax you owe, balancing payments, payments on account
Personal Allowance, Income Tax rates, bands and thresholds.
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