Contact

This site has no accounts and no in-app ticket system. Email [email protected] with the page URL you were using and, if it is a math question, the salary, pay frequency, and filing status you entered. Do not send Social Security numbers, full stubs with account numbers, or employer login details.

The calculator is an educational federal estimate. It does not file a return, change a W-4 at your job, or talk to payroll. For official withholding help use the IRS Tax Withholding Estimator.

What we can and cannot answer

We can explain what this page models (federal income tax plus employee FICA) and what it leaves out (state tax, 401(k), extra withholding).
We cannot tell you how to fill Form W-4, whether your employer withheld too much, or what you will owe in April.
Bug reports (a button that does nothing, a page that 404s) are useful. Paste the URL.