First, you will want to check if you're on the latest payroll tax update which you can check on via the Help menu under About Sage 50 :
Make sure the latest payroll tax update is installed
Make sure you correct your employees personal claim amount…
How to Turn On or Off Automatic Updates?
How do I download Sage 50 product updates and burn it to a disc?
How to update employee personal tax credits claims amounts?
What's New Quoi de neuf
Sage 50 Accounting…