If your tax code starts with a C, it means:
You must update HMRC within one month of moving. If you don't, HMRC may think you are evading the correct regional tax, despite the rates being identical. When Scottish rates diverge further in the future, residency accuracy will become critical. c1251l tax code
If you start a new job in Wales and your previous P45 hasn't arrived yet, your employer may put you on an "emergency" code. C1251L on a week 1 / month 1 basis (not cumulative) is often used as the non-cumulative emergency code for Welsh taxpayers. If your tax code starts with a C,
HMRC gave for the reduction (e.g., interest, medical insurance)? What is your estimated total annual income from all sources? Are you currently receiving any benefits-in-kind If you start a new job in Wales
The number is divided by 10. You can earn £12,570 tax-free. Earning £125,100 would put you deep into the higher or additional rate tax band.