Explain How UK Income Tax Actually Works

Most people on PAYE have income tax deducted from every payslip and have never quite understood what the bands mean or why the number changes. This explains the personal allowance, the three tax bands and how they actually work (including the common misconception), what your tax code means, how National Insurance fits in, and the most common reason a tax code is wrong.

Explain how UK income tax works for someone on a salary, in plain English, covering the parts that cause the most confusion.

Cover:
1. The personal allowance: what it is, the amount for the current tax year, and what happens to it above GBP 100,000
2. Tax bands: the three main bands (basic, higher, additional), the rates, and the common misconception about how they apply
3. How PAYE works: why the deduction happens before you receive your pay and what your tax code means
4. National Insurance: how it differs from income tax and why people often confuse the two
5. The most common reason a tax code is wrong and what to do about it

Tone: plain and specific. Use a worked example with realistic numbers to illustrate how the bands work. Note this is educational and not personal tax advice.