I already filed Form 4868 before using TurboTax. I found where I can enter the tax payment I made with the extension. But I can't find where to say that I filed it in TurboTax. The filing instructions still say April 15 vs October 15. Please advise.
There is no where on a tax return to indicate that you filed an extension request. The IRS already knows that you filed an extension and paid taxes with the extension request when you file a tax return using the Social Security number and name used on the Form 4868.