If you must amend an Earnings Tax return, complete a new return with the updated amount. You can use these forms and instructions to file City tax returns.It should contain a minimum of 35 columns of data. Note: Quarterly Filers enter the Record of PA Withholding Tax as Withholding Tax. To file personal income tax, visit the myPATH portal at myPATH.pa.gov. From there, scroll past the black log-in box and locate the panel titled Returns. This is the easiest way to electronically fill out the forms and prevent losing any information that you've entered. The Employee Earnings Tax is a tax on salaries, wages, commissions, and other compensation paid to an individual who works or lives in Philadelphia. Where To File: File with the local earned income tax collector serving your resident Tax Collection District. How can I file an amended return?