If over $2500, Virginia won't accept checks as of July 2021. My elderly clients rebelled, they are not online savvy, are suspicious of online transactions. One 90+ yr old client just got an under-estimated penalty even though she mailed four checks in a timely fashion. Was she charged a penalty because she paid by (over $2500) check? A Form 760C was included in her return to negate an underpayment penalty. Does Proseries have online estimated payments for Virginia that I can do for her?