Hi Robert Beliaiev,
In relation to the payments made to your mother, we would refer to you BIM 47105 - Specific deductions - staffing costs - payments to dependants and close relatives' which also includes examples where payments may be deemed to be excessive in relation to services provided.
BIM47105 - Specific deductions: staffing costs: payments to dependants and close relatives
If you feel that the payments made were excessive, you may wish to make a voluntary disclosure, or where time limits allow, file an amended Company Tax Return to reflect the reduced employment expenses.
PAYE - annual payments can be made to employees, further information regarding 'Annual payroll scheme for PAYE' can be found at - www.gov.uk/running-payroll/changing-paydays' .If you discover that you have paid an employee the wrong amount or made incorrect deductions, we would refer you to - www.gov.uk/payroll-errors/corrections-pay-or-deductions for further advice.
Running payroll
Thank you.