About Taxentis
Taxentis is a free tool that helps you understand UK tax codes, estimate your take-home pay, and check the deductions on your payslip — all without signing up or handing over any personal information.
What Taxentis does
Taxentis turns confusing HMRC tax codes into plain-English explanations. Enter your tax code and you will see exactly what it means, how your personal allowance is calculated, and whether your code looks correct. You can also use the income tax calculator to estimate your annual and monthly take-home pay, and the payslip checker to verify that your deductions match what they should be.
Why Taxentis exists
Tax codes affect every PAYE employee in the UK, yet most people have no idea what theirs means. HMRC guidance is thorough but dense, and getting a simple answer often means wading through pages of government documentation. Taxentis was built to bridge that gap — to give you a clear, instant explanation of your tax code without the jargon.
How it works
Every calculation runs entirely in your browser. When you enter a tax code or salary figure, the numbers are processed on your device using JavaScript — nothing is sent to a server, and nothing is stored. Once you close or refresh the page, any data you entered is gone. This means your financial information stays completely private.
Disclaimer
Taxentis provides information, not financial or tax advice. While we work hard to keep calculations accurate and up to date with current HMRC rates and thresholds, your personal tax situation may involve factors that a general-purpose tool cannot account for. Always check with HMRC or a qualified tax adviser if you are unsure about your tax position.