Thanks. But no, I've never had a payment plan and I haven't revised or reinstated anything. I've never owed taxes after a return--I only ever receive tax refunds. That's part of why I find the fee so confusing. Is it possible that TurboTax suggested that I was seeking the tax return extension as part of such a revision? This also seems unlikely. I simply made my Q1 estimated tax payment, as I always do as a self-employed person, via my IRS.gov account. I did this around the same time as I filed for the 2024 tax return extension via TurboTax.
