Full list of HMRC tax codes and what they mean

Tax codes can tell us vital information about how much we are paying HMRC in the current tax year. Here's how to check you've got the correct code

Man looks at calculator as he sits in front of computer screen at desk
Checking your tax code is correct is important to ensure you're not paying too much tax
(Image credit: Jacob Wackerhausen via Getty Images)

Tax codes may not be the first thing you look at on your payslip each month, but the short combinations of letters and numbers are key to your finances.

Worryingly, a poll of 3,215 adults by the wealth manager Killik & Co in 2024 found almost a third (32%) of people had never checked their tax code. It means they could be paying more to the taxman than they should be.

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Jessica Sheldon
Deputy Digital Editor

Jessica is a financial journalist with extensive experience in digital publishing.

She was previously Digital Finance Editor at GB News and Personal Finance Editor at Express.co.uk. She enjoys writing about savings, pensions and tax, and is passionate about promoting financial education.