Here's what to know about filing tax extensions, and if you live in a state with an automatically extended deadline.

After that, we’ll briefly mention common mistakes with the W-4 as well as how state withholding forms may differ from federal. The IRS Form W-4, Employee's Withholding Certificate, is a tax ...

Is Box 2(c) on the W-4 form Checked?: If Box 2(c) is NOT checked, then the federal withholding ... the various pre-tax deductions and allowances. This calculator assumes that state and local ...