大概是你付的錢不夠吧？ 必須至少為去年的 100% 或今年的 90%，以較小者為準。注意，如果你今年欠的多得多，

你最好將去年的百分比提高到 110%。這是以前朋友的經曆。 110%比100%更安全。我想這是為了向國稅局表明你在計算中犯了一個無心的錯誤，並盡力糾正它。

我們就遇到這種情況，今年的稅是去年的兩倍！我把這個 01/15 金額提高到了去年的 125%。 目前還沒收到IRS的消息。 我們是三月初提交的。Paper filing (we cannot use electronic filing).  I also paid the bulk of the remaining tax by ACH thru IRS account, leaving less than $200 balance that was paid with a check mailed together with the paper filing - the check is to ENSURE IRS receive our paper filing - once they cashed the check that meant they had received the paper return package.  Any delay process IS their problem.