Get your taxes done using TurboTax

It depends if you had any other forms or schedules to your 1040 (other than Schedule A or Schedule B). 

If No, do not attach a copy of your federal Form 1040 return to Form 540. If Yes, attach a copy of your federal Form 1040 and all supporting federal forms and schedules to Form 540.

For example, if you had a Schedule C and Schedule E, then you would attach your 1040, along with all supporting forms and schedules to your 540. 

Exception: If you did not itemize deductions on your federal tax return but will itemize deductions on your California tax return, complete and attach a copy of the federal Schedule A (Form 1040) to Form 540.

In addition, you must attach all the Form(s) W-2 and W-2G you received to the lower front of your tax return. Also, attach any Forms(s) 1099, 592-B, and 593 showing California income tax withheld.