Single member LLC disregarded entity schedule C filer.
Tax deadline extended to May 17th.
First quarter estimated tax payment due April 15th.
Due to significant drop in 2020 income, I have an estimated refund >> then first quarter safe harbor estimated tax payment.
If I file personal taxes on May 17th and carry over the refund to apply to 2021 estimated tax payment, will it be considered late ? (even though it was technically collected/paid in Sept. 2020 and Jan 2021 estimated tax overpayments).
