What is a D0 tax code and why have I got one?
Last updated February 2026
| Quick answer: | A D0 tax code means you're taxed at the higher rate of Income Tax on all your income from this job, without the benefit of a tax-free personal allowance. |
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Last updated February 2026
| Quick answer: | A D0 tax code means you're taxed at the higher rate of Income Tax on all your income from this job, without the benefit of a tax-free personal allowance. |
When you’ve got two jobs, your tax-free Personal Allowance is usually only applied to one of them. If you earn enough, this means your entire income from your second job can land in the higher rate tax band with a D0 tax code. So for instance:
Most of the time, HMRC will alter your tax code for you as your circumstances change. However, there are times when you might end up on the wrong tax code – and when that happens you need to get it fixed fast. It’s your responsibility to get the problem sorted, and things can get very tricky if you don’t.
If you think your tax code’s wrong, you need to contact HMRC to make sure they have the information they need to put it right. If you’re claiming a tax rebate with RIFT, of course, we’ll check your tax code for you as part of the service. If you’re ever given the wrong code, we’ll get it corrected for you.
Read more how to to change your tax code
Being on the wrong tax code can easily leave you paying the wrong amount of Income Tax on your earnings. For example, this can happen when:
Any of these situations can mean you’re paying too much Income Tax and might be able to claim a tax refund. Get in touch with RIFT to find out more about tax rebates, and to see how the UK’s leading experts can get back everything you’re owed.
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This is the basic tax code that most people paying tax through the PAYE system will have. Here's a breakdown of what it means.
If you're on a BR tax code, you're being taxed at the basic rate of Income Tax (20%) on all your income from this job.
If you're on the wrong tax code it means you're either paying too much or not enough tax. Here's how to fix it.
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