Your proof that you paid your state tax due will be your own bank or credit card statement. TurboTax does not pay your state tax, nor can your state tax due be deducted from a federal refund. Look at the page of filing instructions that prints out with your tax return. What does it say about how you will pay your state tax due?
You must pay your state tax due using the state’s preferred method of receiving payment. For most states that will be by making a payment to the state’s own tax website, or by mailing a check or money order.
https://ttlc.intuit.com/questions/1901670-how-do-i-contact-my-state-department-of-revenue
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