Payroll Tax Compliance Handbook | Federal & State

Payroll tax compliance is one of the most complex areas of tax law. Employers must withhold, report, and remit multiple taxes to federal and state agencies. Mistakes can result in severe penalties. This comprehensive guide covers all federal and state payroll tax requirements.

Critical: IRS penalties for late payroll tax deposits can reach 15%. Willful failure to deposit can result in criminal charges. Always prioritize payroll tax payments, even during cash flow challenges.

Federal Payroll Taxes: Overview

Employee Withholding

• Federal Income Tax (varies by W-4)
• Social Security: 6.2% (up to $168,600 in 2024)
• Medicare: 1.45% (no limit)
• Additional Medicare: 0.9% (over $200K)

Employer Taxes

• Social Security: 6.2% (employer match)
• Medicare: 1.45% (employer match)
• FUTA: 0.6% (first $7,000 per employee)
• State Unemployment (SUTA) varies by state

Federal Payroll Tax Deposit Schedule

Your deposit schedule depends on your total tax liability during a lookback period:

Monthly Depositor

If total taxes in lookback period were $50,000 or less:

Deposit by the 15th day of the following month
Example: January payroll taxes due by February 15

Semi-Weekly Depositor

If total taxes in lookback period exceeded $50,000:

Wednesday: For paydays Saturday through Tuesday
Friday: For paydays Wednesday through Friday

Next-Day Depositor

If you accumulate $100,000+ in taxes on any day:

Must deposit by the next business day
Automatically become semi-weekly depositor for rest of year

Quarterly and Annual Federal Forms

Form 941 (Quarterly)

Reports wages paid and taxes withheld for the quarter

Due Dates:

Q1 (Jan-Mar): Due April 30
Q2 (Apr-Jun): Due July 31
Q3 (Jul-Sep): Due October 31
Q4 (Oct-Dec): Due January 31

Form 940 (Annual)

Federal Unemployment Tax Act (FUTA) annual return

Due Date: January 31

Forms W-2 and W-3 (Annual)

Employee wage and tax statements

Due Dates:

January 31: Provide W-2 to employees
January 31: File W-2 and W-3 with SSA (electronic or paper)

State Payroll Tax Requirements

State requirements vary significantly. Most states require:

State Income Tax Withholding

9 states have no income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, Wyoming

State Unemployment Insurance (SUI)

Rates vary by state and company experience rating (0.1% to 15%+)

State Disability Insurance

Required in CA, NY, NJ, RI, HI, and Puerto Rico

Local Taxes

Cities like NYC, Philadelphia, and San Francisco have local income taxes

Common Payroll Tax Mistakes to Avoid

❌

Misclassifying Workers as Independent Contractors

IRS may reclassify workers and assess back taxes plus penalties

❌

Late Deposits

Penalties: 2% if 1-5 days late, 5% if 6-15 days late, 10% if 16+ days late, 15% if not paid within 10 days of IRS notice

❌

Not Filing Forms 941 or 940

5% penalty per month (max 25%) plus interest

❌

Failing to Provide W-2s to Employees

$60 per form if filed within 30 days, up to $310 per form if filed after August 1

US Payroll Tax Compliance Handbook

Federal Payroll Taxes: Overview

Federal Payroll Tax Deposit Schedule

Quarterly and Annual Federal Forms

State Payroll Tax Requirements

Common Payroll Tax Mistakes to Avoid

Recommended Payroll Software Solutions