IRS witholding calculator available to see if you are over or underwithheld on federal income tax

The new tax law passed at the end of 2017 reduced the 2018 federal tax rates. The federal withholding tables were adjusted to reduce the amount of tax withheld. Many individuals will find themselves owing money, and will need to file a new form w-4 to correct their withholding before the end of the year.  https://www.irs.gov/individuals/irs-withholding-calculator