“FIT withheld” on your pay stub stands for Federal Income Tax withheld. It’s the amount of money your employer takes out of your paycheck and sends to the Internal Revenue Service on your behalf to cover your federal taxes. The exact amount depends on factors like your income, filing status, and the details you provided on your W-4 form. At the end of the year, this withheld amount is compared to what you actually owe—if too much was withheld, you may get a refund; if too little, you may need to pay the difference.