About PaycheckIndex

PaycheckIndex is a payroll planning site for US employees, freelancers, and small employers. Its paycheck calculator applies the 2026 IRS Publication 15-T withholding schedules to Form W-4 inputs and estimates Social Security and Medicare tax.

The site also provides paycheck pages for nine states without individual wage income tax, including common employee payroll contributions in Alaska and Washington, plus a California final-pay guide, a qualified overtime deduction estimator, and source-linked guides for federal deadlines and 2026 qualified overtime rules.

The site is independent and is not affiliated with the IRS, SSA, Department of Labor, SBA, or any state agency.