Schedule X has replaced Form FTB 540X, Amended Individual Income Tax Return, for taxable years beginning on or after January 1, 2017.
When filing amended returns for tax years 2017 and forward, you only need to include these two items:
- The corrected California Personal Income Tax Return Form return with supporting documents and with the “Check here if this is an amended return” box checked; and
- Schedule X.
You do not need to include a copy of the original return. Doing so may cause a delay in the processing of the amended return.
Amended returns may be e-filed if your tax software supports this functionality.