It depends on whether you filed your taxes or not.
If your taxes have not been accepted, then you can make changes. If you mailed in your return, or e-file and had your taxes accepted by the IRS and/or state, then you’ll need to amend to make changes.
If you used TurboTax Online, simply log in to your account and select “Amend a return that was filed and accepted.”
If you used our CD/download product, sign back into your return and select “Amend a filed return.”
See How to Correct Federal Tax Returns and How do I amend my federal tax return for this year?
If you haven’t filed, here’s how to apply your California refund to your 2023 state estimated taxes.
- Go to “A few things before we wrap up your state taxes”
- Start Estimated Taxes for Next Year
- On “Do You Want to Pay California Estimated Taxes for 2023?” say YES
- Fill in your expected income amounts
- Choose your “2023 Filing Status”
- Choose “Your Payment Option”
- On "Apply Overpayment?" choose how much of your refund you want to apply to your 2023 estimated taxes
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