I believe I will owe around 10,000 in taxes in 2021. Because of this I applied 10,000 of my 2020 return to my 2021 taxes. If my calculations are correct, I'd like to know if applying my refund with allow me to avoid penalties? I was wondering when exactly the 10,000 would be applied to my 2020 taxes...would the full amount be applied before Q1 2021 if I submitted the return on time? (i.e., I want to make sure I'm not going to be penalized because I didn't make quarterly estimated payments instead of applying the full amount from the refund.) Thanks,
