Changes that might affect your tax code

You must keep us informed of any change in your circumstances, for example if:

* you get married, form a civil partnership, or separate and either of you were born before 6 April 1935
* you start to receive a second (or third or more) income
* the amount of untaxed income you get increases or reduces

If you don't let us know you could end up paying the wrong amount of tax.

If we change your tax code, you should receive a PAYE Coding Notice from your Tax Office. Keep all notice of coding letters for reference in case you have any questions or need to check you are paying the right amount of tax.