Why do my deductions change when I change jobs?
A job change can affect how credits and rate bands are applied, and cumulative payroll can cause visible adjustments. Payroll timing and one-off payments can also affect the first few payslips.
Is this the same as emergency tax?
Not always. Emergency tax is one reason PAYE can look unusually high, but deductions can also change under normal cumulative payroll when you move employments.
How can I estimate take-home pay after starting a new job?
Use the calculator for planning scenarios at your new annual salary. For payslip-level accuracy, confirm your credit allocation and payroll basis with your employer payroll details.