What are payroll taxes?

Payroll taxes are taxes withheld from employee paychecks and paid by employers based on employee compensation. For professional service firms, payroll taxes include federal income tax withholding, FICA (Social Security 6.2% + Medicare 1.45%), state income tax withholding, FUTA (federal unemployment tax), and SUTA (state unemployment tax). Employers pay both employee withholding (deducted from paychecks) and employer matching (FICA match and unemployment taxes). A $200,000 monthly payroll generates approximately $30,600 in total payroll taxes (employee + employer portions).

Key characteristics of payroll taxes

• Employee withholding: Federal income tax, FICA (7.65%), state income tax

• Employer matching: FICA (7.65%), FUTA (0.6%), SUTA (varies by state)

• Deposit schedules: Monthly or semi-weekly, depending on payroll size

• Quarterly filing: Form 941 reports federal withholding and FICA

• Annual forms: W-2s for employees, Form 940 for FUTA

Why payroll taxes matter for service firms

Payroll tax compliance is non-negotiable: penalties for late deposits reach 15% for severe delays. A consulting firm missing a $25,000 payroll tax deposit faces $3,750+ penalties plus interest. Employers are personally liable for payroll taxes even if the business fails; the IRS can pursue owners personally for unpaid payroll taxes. Proper payroll tax management requires timely deposits (monthly or semi-weekly), accurate quarterly 941 filings, and annual W-2 preparation. Professional payroll processing costs $40-$100 per employee monthly but eliminates compliance risk and personal liability exposure.

Example: Complete payroll tax calculation for consulting firm

Bi-weekly payroll for 25 employees:

• Gross wages: $185,000

Employee withholding (taken from paychecks):

• Federal income tax withholding: $29,500

Employee FICA:

• Social Security (6.2%): $11,470

• Medicare (1.45%): $2,683

• Total employee FICA: $14,153

• State income tax withholding: $8,325

• Total employee withholding: $51,978

• Net pay to employees: $133,022

Employer payroll taxes (paid by the company):

Employer FICA match:

• Social Security (6.2%): $11,470

• Medicare (1.45%): $2,683

• Total employer FICA: $14,153

• FUTA (0.6% on first $7,000 per employee):

• $525 (bi-weekly allocation)

• SUTA (example: 2.5% state rate):

• $4,625

• Total employer payroll taxes: $19,303

Total payroll tax liability:

• Employee withholding: $51,978

• Employer taxes: $19,303

• Total: $71,281

Total employer cost:

• Gross wages: $185,000

• Employer payroll taxes: $19,303

• Total cost: $204,303 (10.4% more than gross wages)

Payment responsibilities:

Federal deposits (income tax + FICA):

• Must deposit $43,653 within 1-3 business days

• State withholding: $8,325 (varies by state rules)

• SUTA: $4,625 (quarterly payment)

Quarterly Form 941 filing:

• Reports $370,000 gross wages (2 pay periods)

• Reports $88,306 federal withholding + FICA

• Due by end of month following the quarter

Annual requirements:

• W-2s for all 25 employees (due January 31)

• Form 940 for FUTA tax (due January 31)

• W-3 transmittal to Social Security Administration

Penalty for late deposits:

• 1-5 days late: 2% penalty ($873)

• 6-15 days late: 5% penalty ($2,183)

• 16+ days late: 10% penalty ($4,365)

• Intentional disregard: 15% penalty ($6,548)