After you file

As per your original post, you paid with your request for an extension.

That amount should appear on Schedule 3 Line 10.

A non-zero amount demonstrates that you requested a federal  extension.

 

( I'm assuming TurboTax attaches federal return if you e-File Wisconsin return ).

 

However, the WI instructions still ask for a confirming  statement with statement of intent.

 

@MENW7721