Like the title says, I have underpayment penalty because my tax withheld is just shy of the 110% of the previous year tax paid. Turbotax Deluxe Desktop gave me the option to try "treat the tax withheld as paid when it was actually withheld" to see if my penalty would be lower. It turns out to be higher than doing "being paid in four equal quarterly installments". I want to switch, but re-doing the interview isn't changing this. Most importantly, I'm unable to uncheck box D in Part II of form 2210 since I want to do 4 equal installment option. How do I do this now? I cannot startover
