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Use this decision tree to work out your correct tax code. Your employer uses your tax code to work out how much tax to take out of your salary or wage.
Use of this tool does not result in data being submitted to us.
It's a good idea to check your tax code when you:
If you don't use the correct tax code you might get a bill at the end of the the year.
Details of any income you've earned at any time during the tax year - 1 April to 31 March.
This decision tree will help you find the correct tax code you should use.
You may need to fill out a Tax code declaration form (IR330) and give to your employer.
No information you provide while using this decision tree is recorded, saved or in any way referenced by Inland Revenue.