In 2018, I made a payment to CA State as an adjustment to my 2010 tax refund. My CA refund was included as taxable in my 2011 federal return. Can I enter the CA payment amount in my 2018 tax return to receive back tax I paid on the 2010 amount from the federal? Or is my only option to amend my 2011 with the federal to reduce the amount of CA State tax refund?
