P PaycheckIndexUS payroll calculators

Federal payroll guide hub

Payroll tax and qualified overtime guides

Use these source-linked guides with the PaycheckIndex calculators. Each page separates a specific payroll question from the calculation and links back to current IRS or DOL material.

2026 qualified overtime deduction

Federal payroll deadlines

2026 estimated tax due dates

A 2026 estimated tax payment calendar for 1099 contractors, freelancers, sole proprietors, partners, and S corporation shareholders.

2026 Form 941 due dates

A 2026 Form 941 due date checklist for employers, including quarterly return deadlines and the extended filing date when deposits were timely made in full.

Payroll tax deposit schedule

A plain-English payroll tax deposit schedule guide for monthly and semiweekly depositors, lookback period basics, and the $100,000 next-day rule.

2026 payroll tax calendar

A compact 2026 payroll tax calendar for estimated tax payments, Form 941 deadlines, employer deposit checks, and year-end wage reporting reminders.