Why did my PAYE change this month?
Common scenario reasons include a bonus or overtime, credits being updated, starting a new job, moving payroll basis, or cumulative year-to-date adjustments. Your payslip can differ depending on payroll timing.
Does PAYE change mean I am overpaying tax?
Not necessarily. A single payslip can be misleading when one-off income or payroll changes occur. For planning, compare annual scenarios and avoid conclusions based on one month.
What should I compare to understand the change?
Compare gross pay, credits (or assumptions), any one-off pay, and whether your situation changed (job change, BIK, pension). Then compare the delta in net pay using scenario tools.