Federal Income Tax Withholding Calculator

H&R Block Tip: The IRS Federal Income Tax Calculator will help you as a taxpayer figure out how to reduce your year-end taxes due amount. Or, it can help you determine your refund amount based on your withholding. You don’t need much in order to use this calculator. All you need are a couple of your most recent pay stubs, your filing status, and a copy of your most recent tax return. While you are filling out the tax return for this year, links that apply to the information will pop up. They are intended to help you while also determining the results. This income tax calculator will give you results that you can transfer onto a new W-4 that you submit to your employer.