Whether your state falls on the PEO side or the client side of unemployment tax reporting decides who owns the experience rating on your workforce, and that ownership decides what you pay. Roughly 35 states now require PEO registration or licensing, and a growing majority require or strongly favor client-level reporting, where each business keeps its own state unemployment insurance (SUI) account rather than being folded into the PEO’s master account. The rest still allow aggregate reporting under the PEO’s own account, and a handful let the parties choose. The model in force where your employees work is the single biggest factor in whether joining or staying with a PEO helps or hurts your SUI rate.
The Two Reporting Models
Under aggregate reporting, sometimes called master reporting, the PEO files all state unemployment returns under its own taxpayer identification number. Every client’s employees sit in one pool, and the PEO’s experience rating, built from the combined claims history of every business in its portfolio, sets the rate. The state sees one large employer.
Client-level reporting works the opposite way. Each client company keeps its own SUI account with the state, wages are reported under that company’s employer identification number, and the tax rate reflects only that company’s claims history and turnover. The PEO still does the filing as an authorized agent, but the state treats the client as the employer of record for unemployment insurance.
The distinction is not just paperwork. It controls whether your company builds its own experience rating or is absorbed into someone else’s blended history.
How the Model Moves Your SUI Rate
New employers get a default SUI rate that varies significantly by state. Based on 2025–2026 data, defaults range from around 1.0% in states like Iowa and North Carolina to over 3.4% in California and New York, with some construction-industry rates exceeding 5.0%. The taxable wage base varies just as widely, from $7,000 per employee in some states to more than $60,000 in others.
Aggregate reporting can help a brand-new business with no history if the PEO’s blended rate is low. It can just as easily hurt a well-run company with almost no turnover, which ends up subsidizing high-turnover businesses in the same pool and paying more than it would on its own experience. That cross-subsidization is the core financial problem with aggregate reporting and the reason regulators have moved away from it.
Client-level reporting removes the subsidy. Your rate reflects your history alone, and companies with strong retention and few claims build favorable ratings over time that directly reduce quarterly bills. For an established employer that has already earned a low rate, losing that independent history to a PEO’s aggregate account can be costly.
Which States Require Client-Level Reporting
State rules for PEO unemployment reporting are not uniform. As of the mid-2000s, the U.S. Department of Labor documented roughly 17 states requiring client-level reporting. That number has grown substantially as more states enacted SUTA dumping prevention laws and tightened PEO oversight, and the client-level camp is now the majority.
States that require client-level reporting generally mandate three things: each client company must maintain a separate SUI account, wages must be reported under the client’s own identification number, and the client’s individual experience rating must set the tax rate. Florida, Pennsylvania, and several other large states follow this approach. In these jurisdictions the PEO cannot use its master account to set rates for individual clients, regardless of the co-employment arrangement.
Other states permit a choice. Some allow PEOs to report under their own account while giving clients the option to keep separate accounts. A few still default to aggregate. Because the specifics change through legislation and administrative rulemaking, the only reliable way to know which model applies to your situation is to check directly with the state labor department or unemployment insurance agency in each state where you have employees, before you sign a PEO agreement.
Why States Are Pushing Toward Client Reporting
The shift is driven largely by concerns about SUTA dumping, a practice where businesses manipulate their unemployment experience ratings to secure artificially low rates. The most common form involves transferring employees to a newly created entity with a clean slate, or routing them through a PEO whose aggregate rate is lower than the client’s individual rate. Either way, the state collects less tax than the business’s actual claims history would justify.
Congress addressed this with the SUTA Dumping Prevention Act of 2004, which amended federal law to require every state unemployment system to include provisions preventing experience rating manipulation. Under 42 U.S.C. § 503(k), when a business transfers to a new entity under common ownership, the unemployment experience must follow, and states must deny favorable rates to acquirers who bought a business primarily to obtain a lower contribution rate.1Office of the Law Revision Counsel. 42 USC 503 – Requirements
The law also requires states to impose “meaningful civil and criminal penalties” on anyone who knowingly violates the anti-dumping provisions and on anyone who advises another person to do so. Specific penalty amounts are left to each state, but the federal mandate sets a floor.2GovInfo. SUTA Dumping Prevention Act of 2004
Client-level reporting supports these anti-dumping goals directly. When each company’s experience rating stays linked to its own account rather than being blended into a PEO’s pool, the opportunity to game the system shrinks. That is why the regulatory trajectory keeps moving toward client-level mandates.
What Happens to Your Experience Rating When You Leave a PEO
One of the most overlooked questions in the PEO relationship is what happens when it ends. If you have been under aggregate reporting for years, your company may not have an independent SUI account or experience rating with the state. Leaving the PEO can mean being assigned a new-employer default rate, effectively erasing years of favorable claims history that was absorbed into the PEO’s pool.
States handle this transition differently. Some treat the departing client as a successor employer and transfer a portion of the experience history from the PEO’s account to the client’s newly established account. Others assign the standard new-employer rate and make the company build its rating from scratch. In states where the PEO reported at the client level all along, this problem largely does not exist, because the company kept its own account and rating throughout.
PEOs are generally required to report client terminations to the state within a set timeframe, and states typically will not release a client’s account from the PEO until outstanding tax liabilities are settled. Before any transition, confirm with the state agency how your experience rating will be treated. The gap between inheriting a favorable rate and starting at the default can amount to thousands of dollars per employee each year, depending on the taxable wage base and rate spread in your state.
FUTA Credit Exposure
Federal Unemployment Tax Act obligations sit on top of state reporting. The base FUTA rate is 6.0% on the first $7,000 of each employee’s annual wages, but employers who pay their state unemployment taxes on time and in full receive a credit of up to 5.4%, reducing the effective federal rate to 0.6%. States with outstanding loans from the federal unemployment trust fund can trigger credit reductions that push the effective FUTA rate higher for employers in those states.3Employment & Training Administration. FUTA Credit Reductions
For a business using a PEO, preserving the FUTA credit depends on state unemployment taxes being paid correctly, on time, and under the right account. A PEO that misfiles under the wrong reporting model, or that has state payments run late because of account setup issues, can put the client’s FUTA credit at risk. That is another practical reason to confirm the PEO’s reporting method matches your state’s requirements from the start.
Penalties for Getting It Wrong
Filing under the wrong model, missing quarterly deadlines, or underreporting wages all carry financial consequences. States impose late-filing penalties that can include flat fees, percentage-based penalties on unpaid taxes, and compounding interest. Structures vary, but delinquent filers commonly face monthly penalties in the range of 1% to 5% of the unpaid amount, plus interest.
States can also assign the maximum SUI rate to employers with delinquent accounts or those who fail to cooperate with audits. Being involuntarily bumped to the highest rate bracket is often more expensive than any individual penalty, because that rate applies to every dollar of taxable wages for every employee, every quarter, until the situation is resolved.
The SUTA Dumping Prevention Act adds a federal layer. States that fail to maintain meaningful penalties for experience rating manipulation risk losing compliance certification under 42 U.S.C. § 503(k), which could affect their employers’ FUTA credit eligibility.1Office of the Law Revision Counsel. 42 USC 503 – Requirements Companies and PEOs that knowingly manipulate reporting to secure lower rates face civil fines and potential criminal charges under state law, and advisors who recommend those schemes carry the same exposure.
Before signing with a PEO, or before renewing, ask two direct questions: does the PEO report under its own account or under your account in each state where you have employees, and what will your experience rating look like if the relationship ends. The answers should come from the state agency, not only from the PEO.