Understanding PEOs and Their Role
Many common law employers and business owners outsource some or all of their payroll and related tax duties to third-party payers. One such third-party payer is a Professional Employer Organization (PEO), which manages employment tax reporting, employer tax withholdings, and tax return filings with the IRS on behalf of client companies.
A PEO is responsible for filing employment tax returns for its clients using the PEO’s Employer Identification Number (EIN). If a PEO is classified as a statutory or common law employer, it assumes full responsibility for employment taxes on wage payments under its control.
How PEOs Handle Payroll Taxes
PEOs may use different methods to calculate and process payroll taxes, including:
- Average Annualized Payroll Tax Percentage – Some PEOs calculate tax due using a standardized percentage.
- State Unemployment Tax Act (SUTA) Rates – Certain PEOs apply their own SUTA rate and honor payroll tax cut-offs.
- Client-Specific SUTA Rates – Some PEOs allow client companies to retain their own SUTA rates upon approval.
Certified vs. Non-Certified PEOs
- Certified PEOs (CPEOs) are accountable for federal tax liabilities and penalties. They must post a $1 million bond to guarantee the payment of federal employment taxes.
- Non-Certified PEOs that fail to comply with federal tax obligations can leave the client company liable for outstanding taxes.
Choosing the Right PEO
When selecting a PEO, it is crucial to evaluate how payroll taxes are calculated, filed, and reported to avoid potential liabilities. Ensuring compliance with tax laws and verifying the PEO’s certification status can help safeguard your business against financial risk.
For further questions on this or any other risk management topic, please contact us. We look forward to assisting you!


