Tax Codes

Tax codes affect how much income tax you pay on your payslip, so it’s important to make sure your employer is using the right one. Here you’ll find guides to help you understand how tax codes work and how deductions are made.

Friendly Disclaimer: Whilst I am an accountant, I’m not your accountant. The information in these guides are legally correct but are for guidance and information purposes only. Everyone’s situation is different and unique so you’ll need to use your own best judgement when applying the advice that I give to your situation. If you are unsure or have a question be sure to contact a qualified professional. I cannot accept responsibility for any losses or penalties you may incur while following the contents.

How Tax Codes Work

A tax code is a numerical number followed by a letter issued by HMRC. Find out how they are generated and what yours means in these guides:

Types of Tax Codes

Income tax and your personal allowance may be calculated in different ways if you have different tax code letters. Here are the most common adjustments and what they mean:

Common UK Tax Codes

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What Happens If Your Tax Code is Wrong?

Find out what happens if your tax code is wrong, how tax refunds work and how to contact HMRC to get things corrected.

Why Did HMRC Change My Tax Code?

Did HMRC notify you about a change in your tax code? Wondering why a tax code change has been put through? Then read on to find out the most common reasons tax code changes happen, how to find out why yours has changed and what to do if you think HMRC has made a mistake.

1257l Tax Code Explained

What the 1257l tax code means, why HMRC issues it every year, whether you get it if you’re self-employed & checking it’s right for you.

K Tax Code Meaning

Understand the K tax code including how it is worked out by HMRC, what it means and why it is given to individuals in certain situations.

Emergency Tax Code

Understand how an emergency tax code works (also known as basic rate, M1 tax code or W1/M1), why it is used and how to get an emergency tax refund.

Understanding HMRC Tax Codes

An overview of tax codes used by HMRC including how they are worked out, the letters commonly used and coding notices.

1185l Tax Code Meaning

If your payslip shows the 1185l tax code, then you’re on one of the most commonly used tax codes for 2018. In this guide, I’ll explain more about this code, including what it means, why it’s used and how to check it’s right for you. What is a Tax Code? A tax code is a … Read more