I owed a one-time $228 at year-end to Indiana and I don't make any quarterly payments (as I know those coupons are optional). Why would TurboTax tell me to mail in a payment then (and this is the option that I selected), shouldn't it state that it would be paid electronically option? Also, I've always just mailed in the coupon for Indiana at the end of year filing (for years) as I typically only owe less than $100 and this has never happened before. I think this is something new and there was a glitch.