Hi there,
When an person gets a second job, the revenue commissioners will give them a second tax credits certificate, specifically for the second job. These are the details that you enter into the employee screen and everything should be taken care of. You can also get these tax credit details from ROS from the P2C file once revenue know the employee works for you (you can ring them up and add the employee quickly if you haven’t done so already).
The employee gets way less tax credits in their second job – revenue will refund the employee any unused tax credits in their first job at the end of the year if the employee.