Glossary
Pay stub glossary
Pay stub codes are short because stubs are small. OASDI is Social Security, MED is Medicare, FIT is federal income tax and YTD is year to date. The full list is below.
Updated 2026-10-02 · 2026 tax year
FICAFederal Insurance Contributions ActOASDIOld-Age, Survivors and Disability InsuranceMedicare tax (MED)Also shown as MED, MEDI or MEDFEAdditional Medicare TaxAn extra 0.9% on high wagesSocial Security wage baseThe 2026 cap is $184,500Federal income tax (FIT)Also shown as FWT or FED WHState income tax (SIT)Also shown as ST WH or the state codeSDIState Disability InsuranceYTD (year to date)Running totals since January 1Gross payEarnings before any deductionsNet payTake-home payPre-tax deductionTaken out before income taxAfter-tax deductionTaken out after taxes401(k)Employer retirement plan contributionHSAHealth Savings AccountFSAFlexible Spending AccountPay frequencyHow often employees are paidPay periodThe dates the paycheck coversOvertime (OT)Hours over 40 in a workweekExempt employeeNot owed overtimeForm W-4Employee's Withholding CertificateWage garnishmentCourt or agency ordered deduction