Decode every abbreviation on your pay stub. From FIT and SIT to FICA, OASDI, and MED — learn what each code means with real examples and calculations.
Your pay stub is packed with abbreviations that can feel like a foreign language. Understanding what each code means helps you verify your pay is correct, catch errors, and make informed financial decisions.
These are the deductions that reduce your gross pay to net pay:
These are voluntary or employer-required deductions:
Published by the BestPaystubGen Editorial Team, covering paystubs, payroll compliance, federal and state taxes, W-2 forms, 1099 contractors, FICA, gross vs net pay, and IRS regulations updated for 2026.
This paystub generator is a simulation/mockup tool for personal record-keeping and verification purposes only.