If you have left a previous employment, you should be in receipt of a P45. Your P45 shows how much tax you’ve paid on your salary so far in the tax year (6 April to 5 April).
A P45 has 4 parts (Part 1, Part 1A, Part 2 and Part 3).
- Your employer sends details for Part 1 to HM Revenue and Customs (HMRC) and gives you the other parts.
- You give Part 2 and 3 to your new employer (or to Jobcentre Plus if you’re not working).
- Keep Part 1A for your own records.
By law your employer must give you a P45 – ask them for one.
If you do not have a P45
Your new employer will need to work out how much tax you should be paying on your salary if you do not have a P45. For example, if:
- you’re starting your first job
- you’re taking on a second job
- you cannot get your P45 from your previous employer
You’ll need to tell your new employer about things like other jobs you have, any benefits you get and if you have a student loan.
Your employer will use this information to work out your correct tax code before your first payday, to do this you can fill out a starter declaration found at the following link:
https://www.gov.uk/government/publications/paye-starter-checklist