During January, February and March HM Revenue & Customs (HMRC) will be sending out new tax codes for 2012-13.
During January, February or March you may get a PAYE Coding Notice from HMRC telling you what your new tax code will be for the tax year 2012-13. Your new tax code will be used by your employer or pension provider from the 6 April 2012 to make sure you pay the right amount of tax.
Not everyone needs to get a Coding Notice, so don't worry if you don't receive one - your employer or pension provider will still be able to update your tax code on the 6 April.
Your Coding Notice is for you to keep.
HMRC will send your new code to your employer or pension provider.
If you have an agent acting for you tell them you have a new tax code - they won't receive a copy.
If you're an employee or get a company or personal pension and are enrolled for Self Assessment Online, you can view PAYE Coding Notices issued after 11 October 2011 online.