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💵 How Payroll Works

Follow a paycheck from gross pay through withholding, payroll taxes, deductions, year-to-date records, and the W-2.

4
lessons
~10 min
to learn
Adults
level
Start the course →

What you’ll learn

  1. Payroll starts with earned gross payExplain how pay rate, time, salary, pay frequency, and payroll inputs create gross pay.Payroll begins with verified compensation and pay-period data before deductions are calculated.
  2. Withholding estimates income tax during the yearDistinguish Form W-4 instructions, withholding tables, tax brackets, and final tax liability.Withholding is a pay-period estimate shaped by the worker's information and current rules.
  3. Deductions turn gross pay into net payTrace payroll taxes, benefits, retirement, and other deductions from gross pay to net pay.Employee deductions and employer-paid taxes are separate parts of the payroll record, and their treatment helps explain the final deposit.
  4. Payroll closes the loop with records and correctionsUse pay-period and year-to-date records to reconcile reporting and correct payroll errors.Payroll is a repeating control loop that ends in records, reporting, review, and correction.

Questions this course answers

What does gross pay represent?

Gross pay is the starting compensation amount before employee-side deductions and withholding.

What is Form W-4 used for in U.S. payroll?

The W-4 supplies filing and adjustment information used with wages and withholding methods.

Which statement about FICA is correct?

FICA includes Social Security and Medicare taxes with generally separate employee and employer shares.

How is net pay usually related to gross pay?

Net pay is the amount delivered after the employee-side reductions that apply to that payment.

Why are year-to-date totals useful?

Year-to-date totals make it possible to spot cumulative setup or reporting errors before year-end.

Grounded in trusted sources

  • Internal Revenue Service, Publication 15 (2026), Employer's Tax Guide: https://www.irs.gov/publications/p15
  • Internal Revenue Service, Publication 15-T (2026), Federal Income Tax Withholding Methods: https://www.irs.gov/publications/p15t
  • Internal Revenue Service, Topic no. 753, Form W-4, Employees Withholding Certificate: https://www.irs.gov/taxtopics/tc753
  • Internal Revenue Service, Tax withholding: https://www.irs.gov/individuals/employees/tax-withholding
  • Internal Revenue Service, About Publication 15, Circular E: https://www.irs.gov/forms-pubs/about-publication-15
  • Internal Revenue Service, About Form W-2, Wage and Tax Statement: https://www.irs.gov/forms-pubs/about-form-w-2
  • Wikimedia Commons MediaWiki API image records: https://commons.wikimedia.org/w/api.php

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