If you filed your extension through TurboTax, your tax payment should already be accounted for. Nevertheless, it's a great idea to review it for accuracy before you file your return.
- Open or continue your return in TurboTax, if it's not already open.
- Search for estimated tax payments (use this exact phrase) and then click the Jump to link in the search results.
- In the Payments with Extension section, click the Start or Update button next to the payment you submitted with your type of federal, state, or local extension. Make sure the amount shown is correct.
And Pay attention to which year you are entering for a State Extension payment. A prior year state extension payment is also deductible on the federal return so be sure to enter it here.