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The P45 form is a statement that shows how much tax you’ve paid on your salary so far in the tax year.
When you leave your job or change to a new one, your old employer will generate a P45 from their payroll system. They should automatically send you this.
You should receive two copies:
Your P45 will contain details all of which your new employer will need. This includes:
This information will help your new employer put you on the correct tax code. This is important as it will make sure you pay the correct amount of tax at your new job.
Without it, you’ll be given an emergency tax code.
There is no standard format for it (each may look a bit different), but the minimum information on it is always the same.
The P45 which you don’t give to your employer should also be kept safe. You may need this to:
In this case, you won’t be able to get a replacement. However, your new employer will ask you to fill in a starter checklist instead.
⚠️ Not having a P45 could mean you pay too little or too much tax. ⚠️
If you notice you’ve paid too much, you can either:
If you choose to wait for an automatic tax rebate, this is usually done by the end of the tax year (5 April). HM Revenue and Customs (HMRC) will send you either:
This will tell you how to get a refund or pay tax you owe.
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