FIT (Federal Income Tax Withholding)

FIT, or federal income tax withholding, is the amount of federal income tax an employer withholds from an employee's wages and sends to the IRS. It is one of the most common payroll deductions employees see on their pay stubs.

The amount withheld generally depends on the employee's taxable wages, payroll frequency, and the information provided on Form W-4. Employers use IRS withholding methods and tables to calculate how much federal income tax should be taken from each paycheck.

Federal income tax withholding is different from Social Security and Medicare taxes. FIT goes toward the employee's federal income tax liability, while Social Security and Medicare taxes are separate payroll taxes with their own rates and rules.

The amount withheld during the year is essentially a prepayment toward the employee's federal income tax bill. When the employee files their tax return, the total amount withheld is compared with the amount of tax they actually owe. If too much was withheld, they may receive a refund. If too little was withheld, they may owe additional tax.

Employees can submit a new Form W-4 if they want to update their withholding. Changes in income, filing status, dependents, multiple jobs, or other financial circumstances can all be reasons to review the form.

Frequently asked questions

What does FIT mean on a paycheck?

FIT stands for federal income tax withholding. It is the federal income tax taken from an employee's paycheck and sent to the IRS on the employee's behalf.

How is federal income tax withholding calculated?

Employers generally calculate FIT using the employee's taxable wages, pay frequency, Form W-4 information, and IRS withholding methods.

Is FIT the same as FICA?

No. FIT is federal income tax withholding. FICA refers to Social Security and Medicare taxes, which are separate payroll taxes.

Can an employee change how much FIT is withheld?

Yes. Employees can generally submit a new Form W-4 to update their federal income tax withholding based on their current tax situation.

Why would FIT change from one paycheck to another?

Federal withholding can change when taxable wages change or when an employee updates their Form W-4. Overtime, bonuses, commissions, and other changes in earnings can also affect the amount withheld.