Understanding Taxes
Background
Social Security tax and the Medicare tax are types of payroll taxes. Social Security
taxes, also known as the “Federal Insurance Contributions Act” tax, provide benefits for
retired workers and their dependents and for disabled workers and their dependents. The
Medicare tax is used to provide medical benefits for certain individuals when they reach
age 65. Workers, retired workers, and the spouses of workers and retired workers are
eligible to receive Medicare benefits upon reaching age 65. Federal income taxes are
used to provide for national programs such as defense, community development, and law
enforcement. Employers withhold payroll taxes and income taxes from employees’ pay.
Employees complete Form W-4, Employee’s Withholding Allowance Certificate, so
that employers know how much income tax to withhold from their employees’ pay.
Key Terms
Federal income tax—The federal government levies a tax on personal income. The
federal income tax provides for national programs such as national defense; veterans and
foreign affairs; social programs; physical, human, and community development; law
enforcement; and interest on the national debt.
Federal Insurance Contribution Act (FICA) Tax—Provides benefits for retired workers
and their dependents as well as for disabled workers and their dependents. Also known as
the Social Security tax.
Form W-4, Employee’s Withholding Allowance Certificate—Completed by the
employee and used by the employer to determine the amount of income tax to withhold.
Medicare tax—Used to provide medical benefits for certain individuals when they reach
age 65. Workers, retired workers, and the spouses of workers and retired workers are
eligible to receive Medicare benefits upon reaching age 65.
Payroll taxes—Include Social Security and Medicare taxes.
Social Security tax—Provides benefits for retired workers and their dependents as well
as for the disabled and their dependents. Also known as the “Federal Insurance
Contributions Act” tax.
Opening the Lesson
Hand out Fact Sheet—Payroll Taxes and Federal Income Tax Withholding. Use the
following questions to prompt students to share what they know about withholding:
• Can you explain why a worker earns $100 but receives a paycheck for less than
$100?
The $100 is gross pay, and the amount of the paycheck is net pay.
• What happens to the amount earned but not received by the employee?
The employer sends these taxes (withheld payroll and income taxes) to the
federal government.
• How are payroll taxes used?
Social Security taxes are used to provide for retired workers, disabled
workers, and both of their dependents. Workers, retired workers, and
spouses of both are eligible to receive Medicare benefits upon reaching age
65.