IR-2019-55, March 22, 2019
WASHINGTON — The Internal Revenue Service today provided additional expanded penalty relief to taxpayers whose 2018 federal income tax withholding and estimated tax payments fell short of their total tax liability for the year.
The IRS is lowering to 80 percent the threshold required to qualify for this relief. Under the relief originally announced Jan. 16, the threshold was 85 percent. The usual percentage threshold is 90 percent to avoid a penalty.
“We heard the concerns from taxpayers and others in the tax community, and we made this adjustment in an effort to be responsive to a unique scenario this year,” said IRS Commissioner Chuck Rettig. “The expanded penalty waiver will help many taxpayers who didn’t have enough tax withheld. We continue to urge people to check their withholding again this year to make sure they are having the right amount of tax withheld for 2019.”
This means that the IRS is now waiving the estimated tax penalty for any taxpayer who paid at least 80 percent of their total tax liability during the year through federal income tax withholding, quarterly estimated tax payments or a combination of the two.
Today’s revised waiver computation will be integrated into commercially-available tax software and reflected in the forthcoming revision of the instructions for Form 2210, Underpayment of Estimated Tax by Individuals, Estates, and Trusts.
Taxpayers who have already filed for tax year 2018 but qualify for this expanded relief may claim a refund by filing Form 843, Claim for Refund and Request for Abatement and include the statement “80% Waiver of estimated tax penalty” on Line 7.  This form cannot be filed electronically.
Today’s expanded relief will help many taxpayers who owe tax when they file, including taxpayers who did not properly adjust their withholding and estimated tax payments to reflect an array of changes under the Tax Cuts and Jobs Act (TCJA), the far-reaching tax reform law enacted in December 2017. 
The IRS and partner groups conducted an extensive outreach and education campaign throughout 2018 to encourage taxpayers to do a “Paycheck Checkup” to avoid a situation where some might have had too much or too little tax withheld when they file their tax returns. If a taxpayer did not submit a revised W-4 withholding form to their employer or increase their estimated tax payments, they may have not had enough tax withheld during the tax year.
Additional information
Because the U.S. tax system is pay-as-you-go, taxpayers are required, by law, to pay most of their tax obligation during the year, rather than at the end of the year. This can be done by either having tax withheld from paychecks or pension payments, or by making estimated tax payments.
Usually, a penalty applies at tax filing if too little is paid during the year. This penalty is an interest based amount approximately equivalent to the federal interest on the amount not paid in a timely manner. Normally, the penalty would not apply for 2018 if tax payments during the year met one of the following tests: 
The person’s tax payments were at least 90 percent of the tax liability for 2018 or
The person’s tax payments were at least 100 percent of the prior year’s tax liability, in this case from 2017. However, the 100 percent threshold is increased to 110 percent if a taxpayer’s adjusted gross income is more than $150,000, or $75,000 if married and filing a separate return. 
For waiver purposes only, today’s relief lowers the 90 percent threshold to 80 percent. This means that a taxpayer will not owe a penalty if they paid at least 80 percent of their total 2018 tax liability. If the taxpayer paid less than 80 percent, then they are not eligible for the waiver and the penalty will be calculated as it normally would be, using the 90 percent threshold. For further details, see Notice 2019-25PDF, posted today on IRS.gov.
Like last year, the IRS urges everyone to take a Paycheck Checkup and review their withholding for 2019. This is especially important for anyone now facing an unexpected tax bill when they file. This is also an important step for those who made withholding adjustments in 2018 or had a major life change to ensure the right tax is still being withheld. Those most at risk of having too little tax withheld from their pay include taxpayers who itemized in the past but now take the increased standard deduction, as well as two-wage-earner households, employees with nonwage sources of income and those with complex tax situations.
To help taxpayers get their withholding right in 2019, the updated Withholding Calculator is now available on IRS.gov.
The IRS has many useful resources for anyone interested in learning more about tax reform, including Publication 5307, Tax Reform: Basics for Individuals and FamiliesPDF, and Publication 5318, Tax Reform What’s New for Your BusinessPDF. For other tips and resources, visit IRS.gov/taxreform or check out the Get Ready page on IRS.gov .