Publication 15-T (2026), Federal Income Tax Withholding Methods
Worksheet 1A, pay periods, W-4 Steps 2–4, annual percentage-method tables, standard annual adjustment, rounding boundary.
Open Internal Revenue Service source ↗Estimate federal paycheck withholding, Social Security and Medicare for one pay period, or convert hourly pay to an annual salary.
Start with the example below, then submit your own inputs to see the matching calculation.
Single, biweekly, $3,000 gross, no entered deductions or W-4 adjustments. State and local withholding excluded.
The federal withholding calculation follows Publication 15-T. FICA uses the 2026 Social Security wage base and Additional Medicare threshold together with the year-to-date wages you enter.
The hourly-to-salary tool answers a different question. It converts gross pay by hours and paid weeks, with no tax claim.
Each result uses rules for a named tax year. When the IRS changes the calculation, we update the calculator and recheck every example.
Worksheet 1A, pay periods, W-4 Steps 2–4, annual percentage-method tables, standard annual adjustment, rounding boundary.
Open Internal Revenue Service source ↗Social Security employee and employer rates, Medicare rates, Social Security wage base, Additional Medicare withholding threshold.
Open Internal Revenue Service source ↗$184,500 Social Security wage base, 6.2% employee and employer rates.
Open Social Security Administration source ↗field labels and employee-election boundaries.
Open Internal Revenue Service source ↗Start with the example below, then submit your own inputs to see the matching calculation.
Single, biweekly, $3,000 gross, no entered deductions or W-4 adjustments. State and local withholding excluded.
The federal withholding calculation follows Publication 15-T. FICA uses the 2026 Social Security wage base and Additional Medicare threshold together with the year-to-date wages you enter.