IRS certified PEO (CPEO) list

Which PEOs are IRS certified

IRS list edition

Report date 8/7/2026read October 16, 2026

Active CPEOs on the list

About 120legal entities, not brands

PEOs we cover that match

11 of 15plus 1 likely match

Update cadence

Quarterlyby the 15th of Jan, Apr, Jul, Oct

What IRS certification means

The CPEO program was created by the Tax Increase Prevention Act of 2014 and sits in Internal Revenue Code section 7705. It is voluntary: a PEO does not need it to operate. To be certified, the IRS says a PEO must be a business entity with at least one physical US location and show financial responsibility, organizational integrity and tax compliance, and be run mainly by people with employment tax knowledge.

A CPEO also has to post a bond equal to the greater of 5% of its prior-year employment tax liability (capped at $1,000,000) or $50,000 (26 USC 7705(c)).

Certification is not an IRS endorsement of service quality, prices or benefits. It is a tax status. A CPEO can still have the support and billing complaints covered in our reviews, such as the FSA claim problems reported at TriNet in 2026 (see the TriNet review).

Why it matters: three tax rules

1. The CPEO is the only federal employer for the wages it pays

For wages a CPEO pays to your work site employees, the CPEO "shall be treated as the employer (and no other person shall be treated as the employer)" for federal employment taxes (26 USC 3511(a)). If the CPEO fails to deposit those taxes, the IRS looks to the CPEO. With a non-certified PEO, section 3511 does not apply, so you can remain liable for your own employment taxes even though the PEO files them.

2. Wage bases carry over when you join or leave mid-year

The CPEO is treated as a successor employer and you as the predecessor for wage base purposes (26 USC 3511(b)). So the Social Security wage base ($184,500 in 2026) and the FUTA base ($7,000) do not restart when you move onto or off a CPEO in the middle of the year. This carryover is written for certified PEOs; with a non-certified PEO, ask in writing how wage bases are handled if you join or leave mid-year.

3. Your tax credits stay with you

Credits such as the research credit, the work opportunity credit and the small employer health insurance credit stay with you as the customer (26 USC 3511(d)). This matters most for startups that offset payroll tax with the research credit; see payroll and PEO for startups.

How to check a PEO yourself

1. Ask the PEO for the exact legal name and EIN of the entity that will sign your contract. The IRS warns that the names of many CPEOs are similar, and a CPEO contract must show the CPEO's exact name and EIN.
2. Open the IRS active CPEO list (a PDF linked from the IRS "CPEO public listings" page) and search for that exact name. The list shows applicant name, address, effective date and the report date.
3. Check the suspended and revoked lists on the same IRS page. Revocations are added no later than the next scheduled update.
4. Look at the report date. If it is more than a quarter old, a newer edition is due.
5. Recheck at each renewal. Status can change, and a PEO group may move clients between entities.

CPEO is federal. State licenses are separate

IRS certification says nothing about state licensing, and the reverse is true too. Some examples from state regulators:

• Texas: a PEO needs a license from the Texas Department of Licensing and Regulation, even with one covered Texas employee (Labor Code chapter 91). See PEO rules in Texas.
• Florida: a license as an employee leasing company from the DBPR Board of Employee Leasing Companies. See PEOs in Florida.
• New York: registration or exemption with the NYS Department of Labor, renewed yearly; 387 PEOs were registered as of October 1, 2026. See PEOs in New York.
• California: no state PEO license. See PEOs in California.

Accreditation and other labels

ESAC accreditation is a private program, separate from the IRS. ADP TotalSource says it is ESAC-accredited; we did not check ESAC's own list, so we do not label any PEO as accredited on this page. Be careful with similar-sounding wording on PEO sites: ExtensisHR's "IRS-accredited" badge and PrestigePEO's "industry certifications" are marketing labels; the IRS list is what counts for the tax rules above.

Common mistakes

• Matching the brand, not the entity. TriNet's certified entity is TriNet HR III-B, Inc. Check the name on your contract, not the logo on the proposal.
• Assuming "not on the list" means a bad PEO. It means the federal tax liability rules above do not shift to the PEO. Some PEOs certify under a different entity name.
• Treating certification as a price or service signal. CPEO status and cost are unrelated. Compare fees in our PEO cost breakdown and service in our PEO rankings.
• Switching mid-year without asking about wage bases. The section 3511(b) carryover covers certified PEOs only, so get the wage-base treatment in writing from any other PEO.