If you think your tax code is incorrect, you should contact HMRC directly.
Sometimes errors are made in issuing tax codes, but your umbrella company is legally unable to change tax codes without instruction from HMRC.
If you believe a mistake has been made, you need to get in touch with HMRC directly as soon as you can.
You can either ring them directly on 0300 200 3300 or, if you prefer, set up a personal tax account using their online service.
The online service allows you to:
- Check your tax code and Personal Allowance
- See if your tax code has changed
- Tell HM Revenue and Customs (HMRC) about changes that affect your tax code
- Update your employer or pension provider details
- See an estimate of how much tax you’ll pay over the whole tax year
- Check and change the estimates of how much income you’ll get from your jobs, pensions or bank and building society savings interest