Employers: how to confirm an employee tax code
Call HMRC to check the tax code of one of your employees.
Have your PAYE reference number and the employee’s National Insurance number with you when you phone.
0300 200 3300
8am to 8pm, Monday to Friday
8am to 4pm, Saturday
9am to 5pm, Sunday
Closed bank holidays, Easter Sunday, Christmas Day, Boxing Day and New Year’s Day.