Amend CA State Return

[TaxNoob18]

I just e-filed my taxes a few days ago. It was accepted by both Federal and State. I was a partial CA resident, moving out of CA to TX mid 2025. I just realized I made an error calculating my W2 income as a CA resident (January to mid July). I summed up my gross income when I should've subtracted X dollar from gross income for 401k contribution (because 401k contribution isn't taxed until later). As a result I over reported my income by about $12K.

In addition to that, I completely forgot to include wife's W2. She had a part time job in CA but quit her job before we moved out of CA. I'm supposed to report her W2 but didn't do it at all. I just realized that today.

I have scheduled payment (I owe state tax) on March 3, 2026 (thru bank account direct withdrawal). Can I stop that payment until I correct my state tax and resubmit it? I'm trying to avoid paying CA FTB twice if both payments go through.

How do I amend my CA state return? I'm using Turbotax Deluxe on Windows 11.

[LaShaunA3]

Since your return has already been accepted, you will need to wait until it is fully processed before filing an amendment. 

You can try to cancel the scheduled California direct debit through your FTB MyFTB account, or by contacting the FTB at least two business days before the payment date.

If the payment is processed, it'll simply be credited to your account and reconciled when you amend your tax return.

Once your tax return is completely processed, you can Amend (Form 1040-X) to first correct your federal return, then update California so Form 540NR-X is generated automatically.

Amend TurboTax CD/Download 

[TaxNoob18]

Can I just amend state return? There's nothing wrong with my Federal return. Everything (W2, 1099INT/DIV, long term gain etc) is already entered in Federal part of Turbotax. I didn't forget anything.

My income gets transferred to state but I'm supposed to report the first half of 2025 as CA income when I lived there. I just made mistake in CA W2 calculation when I was a CA resident. I over reported my W2 income and under or didn't report my wife's W2.

[MaryK4]

Yes, you can just amend your California tax return.  When you prepare the amended return, Turbotax will recalculate based on your updated income on the Part-Year return, so you will have an additional amount due or a refund based on your original payment so you will not have to double payment.  @TaxNoob18