Employee Tax Withholding Guide
Taxes, forms, calculation, and adjustments.
Tax Types
Federal income tax
Basis: Wage amount, filing status
Rate: Progressive brackets
State income tax
Basis: State residence
Rate: State-specific
Social security
Basis: Wages up to cap
Rate: 6.2% employee
Medicare
Basis: All wages
Rate: 1.45% employee
Local tax
Basis: Local jurisdiction
Rate: Local-specific
Additional Medicare
Basis: High earners
Rate: 0.9% above threshold
Key Forms
1. W-4 Federal withholding
2. State withholding forms
3. I-9 Employment eligibility
4. W-2 Year-end reporting
5. 1099 Contractor reporting
6. 941 Quarterly filing
7. 940 Annual unemployment
8. State tax returns
Calculation Steps
1. Determine filing status
2. Check allowances claimed
3. Use withholding tables
4. Apply wage brackets
5. Calculate periodic withholding
6. Adjust for additional withholding
7. Verify total withholding
8. Report on pay stub
Adjustment Triggers
Filing status change
Trigger: Marriage, divorce
Action: Update W-4
Allowance change
Trigger: Dependent changes
Action: Revise withholding
Additional withholding
Trigger: Tax planning
Action: Extra amount
Exempt status
Trigger: No tax liability
Action: Claim exemption
Withholding Checklist
1. Collect W-4 from new employees. 2. Verify filing status claimed. 3. Use correct withholding tables. 4. Calculate withholding per pay period. 5. Include all required taxes. 6. Apply Social Security cap. 7. Calculate Medicare correctly. 8. Apply additional withholding if requested. 9. Report withholding on pay stub. 10. Collect state withholding forms. 11. Update when status changes. 12. Report year-end correctly. Tax withholding = accurate compliance. Forms collected. Status verified. Tables used. Calculations accurate. All taxes included. Pay stub reporting. Year-end reporting. Updates timely.