Final answer:
The 1040EZ form is used by taxpayers who take a standard deduction and have no dependents. The 1040NR form is used by nonresident US taxpayers to file a tax return. The W-2 form authorizes an employer to withhold taxes from an employee's paycheck, while the W-4 form summarizes the total amount of taxes withheld by an employer.
Step-by-step explanation:
The 1040EZ form is used by taxpayers who take a standard deduction and have no dependents. It is the simplest tax form and is used by the majority of individuals. This form calculates the amount of tax owed based on the income earned and the deductions claimed.
The 1040NR form is used by nonresident US taxpayers who need to file a tax return. This form is specifically designed for individuals who are not US residents but have income from US sources. It helps determine their tax liability.
The W-2 form authorizes an employer to withhold taxes from an employee's paycheck. It includes information about the employee's wages, income tax withholding, and other employment details. The W-4 form, on the other hand, summarizes the total amount of taxes withheld by an employer. It is filled out by the employee to determine the correct amount of taxes to be withheld from their paycheck.