An underpayment penalty is a penalty charged to a taxpayer who does not pay enough toward his tax obligation throughout the year. Taxpayers subject to the underpayment penalty use Form 1040 or 1040A to determine the amount.

What is the underpayment penalty for 2020?

The standard penalty is 3.398% of your underpayment, but it gets reduced slightly if you pay up before April 15. So let's say you owe a total of $14,000 in federal income taxes for 2020. If you don't pay at least $12,600 of that during 2020, you'll be assessed the penalty.

Is there an underpayment penalty for 2019?

In general, taxpayers must pay at least 90 percent of their tax bill during the year to avoid an underpayment penalty when they file. On January 16, 2019, the IRS lowered the underpayment threshold to 85 percent and on March 22, 2019, the IRS lowered it to 80 percent for tax year 2018.