Fill out the correct form for your business. To amend a return online, select "Amend a prior eFiled Report".Include all transactions previously reported and amendments. This video will show how to complete DE 4 - employee's withholding allowance certificate online using fillable forms at EDD website. Many find the easiest way to figure the entries for Form. X is to first make the changes in the margin of the return they are amending. This website provides current year unsecured tax information and is available between March 1 and June 30 only. Above your name on Side 1, fill in the boxes for the calendar year or write in your fiscal year end (month and year) of the return you are amending. When filing an amended return, you must use the correct form for the quarter being amended, report the corrected amounts, and mark the "Amended Return" box. Shortly after March 20th, LDR will mail out the four Form L-1's that will be used to report and reconcile state income tax withheld for each quarter.