Terms of use

The calculators and guides on this site are provided free, as is, for general information. They estimate federal income tax only and are not tax, legal or financial advice.

Tax rules change, and your situation may include facts the calculators don’t ask about. Check your figures against your W-2, 1099 and the official IRS instructions, or ask a tax professional, before you file.

WattFlow is not affiliated with the IRS, the U.S. Treasury, or any app or company named on this site.