Group Management Services, sold and spoken of as GMS, is an Ohio-based PEO founded in 1996 and still owned by its founder. It sits on the IRS Certified Professional Employer Organization register effective January 1, 2018, reports more than 50,000 worksite employees, and runs roughly 25 offices with local service teams, a footprint built partly organically and partly through several PEO acquisitions since 2018. The client base is blue collar: construction, manufacturing, transportation, staffing, home health care and landscaping. The sweet spot is 10 to 100 employees, and what GMS is known for is workers compensation and safety, including self-insurance in Ohio since 2014.
Companies a few renewal cycles in usually start shopping for one of four reasons. The medical renewal outran payroll growth. The business expanded past the Midwest and Southeast, where the offices are, and the local team advantage quietly disappeared. A new CFO asked why GMS carries IRS certification but not ESAC accreditation, the industry's financial assurance program. Or the comp modifier improved and the owner wants to know who prices that best.
None of those are automatic reasons to leave. What follows is a straight comparison of the providers most often used to replace GMS, where each wins and loses against it, and what a switch costs once you net out disruption. We are an independent brokerage with 36 PEOs on our panel, paid by the PEO a client chooses, so the side-by-side costs you nothing.
GMS alternatives at a glance
| Provider | Best for | Not a fit for | Typical cost and pricing model | CPEO / ESAC | Watch-out |
|---|---|---|---|---|---|
| Group Management Services (GMS) (current) | Small and mid-size blue-collar employers; 5 to 250 employees (sweet spot: 10 to 100) | Venture-backed tech companies wanting a software-first platform | Quote-only PEPM package tiers plus quoted benefits and workers' comp, per client | Yes / No | Not ESAC accredited and no published pricing, so financial assurance and cost both have to be verified in diligence. |
| FrankCrum | Construction and skilled trades employers; 10 to 500+ employees (sweet spot: 10 to 150) | Buyers who require CPEO or ESAC credentials | Quote-only Bundled administrative fee quoted per client, driven by payroll size, headcount and workers' comp risk class | No / No | Neither IRS CPEO-certified nor ESAC-accredited, and the service footprint is still weighted toward Florida and the Southeast. |
| BBSI (Barrett Business Services) | California and West Coast employers; Small and mid-size businesses; 2025 figures imply an average near 17 worksite employees per client (sweet spot: 10 to 100) | Buyers who require IRS CPEO certification | Quote-only Custom rate quoted per client, driven by headcount, workforce mix, turnover, loss history, job-function risk and experience modification; BBSI states it does not use flat or generic pricing tiers | No / Yes | Not IRS CPEO certified, and the business is concentrated in California, which supplied about 72% of 2025 revenues. |
| Paychex PEO | Multi-state employers; 5 to 500 employees | Companies wanting cutting-edge tech | Quote-only PEPM or percentage of payroll, quoted per client | Yes / Yes | 2025 to 26 investor commentary flagged the PEO segment as underperforming relative to Paychex's broader business; service consistency post-Oasis-integration varies. |
| Questco | Texas and Sun Belt SMBs (10 to 250 employees); 10 to 250 employees | Companies outside the Texas/Sun Belt footprint | Quote-only Quote-only PEPM | Yes / No | CPEO yes but no ESAC accreditation, a credential gap vs. |
| The Employer Group | Wisconsin and Madison-area small businesses; Small businesses, roughly 5 to 100 employees (sweet spot: 10 to 50) | Buyers who require IRS CPEO certification | Quote-only Quote-only; pricing not published | No / No | Neither IRS CPEO certified nor ESAC accredited, and the footprint is concentrated in Wisconsin. |
6 of the 6 providers here do not publish rates. What varies between them is the fee structure, not a published number, so compare the structures in the fourth column and get quotes for the rest. Fit, exclusions and credentials come from each provider’s profile in our directory, verified September 2026 against the IRS CPEO list and the ESAC directory. Typical cost is a published or publicly reported range, not a quote.
How we picked these. The providers below were chosen from the 36 PEOs on our panel by fit with the typical Group Management Services (GMS) client: company size (5 to 250 employees (sweet spot: 10 to 100)), industries (Construction, Manufacturing, Transportation and Logistics) and the trade-off in Group Management Services (GMS)’s own profile (not esac accredited and no published pricing, so financial assurance and cost both have to be verified in diligence). Credential status comes from the IRS CPEO register and the ESAC directory, verified September 2026. We are paid by the PEO a client selects, from any provider on the panel, at no cost to the client, so no provider pays more to appear here.
FrankCrum
FrankCrum is the closest philosophical match to GMS on our panel: family-owned since 1981, third generation, based in Clearwater, Florida, with more than 90,000 worksite employees across more than 4,800 clients.
Where it beats GMS is the comp structure. FrankCrum owns its workers compensation carrier, Frank Winston Crum Insurance, so underwriting and claims sit under one roof and you negotiate with the party carrying the risk. Pay-as-you-go premiums remove the large down payment and take the drama out of the year-end audit. GMS has a strong comp practice, but self-insurance in one state is not the same as owning the carrier.
Where it loses is credentials and geography. FrankCrum is on neither the IRS CPEO list nor the ESAC directory, which ends the conversation for buyers who treat certification as a gate, and the footprint is weighted to Florida and the Southeast. See the FrankCrum comparison.
BBSI (Barrett Business Services)
BBSI answers the financial assurance question GMS cannot. It is NASDAQ-listed, founded in 1965 and headquartered in Vancouver, Washington, with 138,218 average worksite employees in 2025 across more than 8,200 PEO clients. You can read a 10-K rather than take a private PEO's word on solvency, and it is ESAC accredited and SOC 1 certified besides.
The service model will feel familiar: 45 branches in 15 states and a stated four-specialist team per client covering payroll, HR, risk and business strategy. Comp capability is deep too, with self-insurance in four states and a captive insurer for Arizona and Utah.
Where GMS wins is certification and the map. BBSI is not on the IRS CPEO list, so there is no sole-liability shift for employment taxes, and the book is concentrated in California, roughly 72% of 2025 revenues, so the branch bench thins as you move east. Pricing is custom, built on loss history and experience modification. Detail on the BBSI page.
Paychex PEO
Paychex PEO is the alternative for a GMS client that has grown into a multi-state problem. In business since 1971, run as a division of a public company, both IRS CPEO certified and ESAC accredited, which closes the credential gap in one move, and priced as PEPM or a percentage of payroll, typically $140 to $220 per employee monthly.
The strength is payroll and tax. Multi-state payroll and tax compliance is the deepest thing Paychex does, and it handles seasonal workforces well, which matters for landscaping, staffing and construction payrolls that swing between quarters.
Where GMS wins is the relationship and the risk bench. Paychex serves through pooled national centers, not a branch with people who have walked your job sites, and the difference shows the first time a claim gets complicated. Add-on fees accumulate, and service consistency since the Oasis integration has been uneven. Compare on the Paychex PEO page.
Questco
Questco is the Texas analogue to what GMS is in Ohio: independent, regionally rooted, founded in 1989 in The Woodlands, CPEO certified, serving 10 to 250 employee businesses across Houston, DFW, Austin and San Antonio, with a heavily overlapping industry mix.
Where it beats GMS is Sun Belt presence. If your headcount has migrated to Texas, the branch logic that made GMS attractive now works against you, and local relationships beat a well-run office 1,200 miles away. Pricing is quote-only PEPM.
Where GMS wins is comp depth. Questco is a capable generalist; GMS is a specialist in comp-heavy payrolls with a safety practice built for trades. Questco also shares the exact credential profile, CPEO yes and ESAC no, so moving there does not answer a financial assurance objection. See the Questco comparison.
The Employer Group
The Employer Group is the smallest and most local option here. Founded in 1995 in Verona, Wisconsin, wholly owned by M3 Insurance, a regional insurance brokerage, since January 1, 2023, with about 26 staff and a base of Wisconsin small businesses in the 10 to 50 employee range.
Where it beats GMS is flexibility and access. Clients can buy individual services instead of a full bundle, which suits an employer that wants payroll and HR help without co-employment, or that wants to unwind it in stages.
Where GMS wins is everything scale-related. The Employer Group appears on neither the IRS CPEO list nor the ESAC directory, so for a real multi-state footprint or a CFO who screens on certification it is not a serious alternative. Look at the Employer Group page.
Not sure which of these fits your headcount and state? Get a free side-by-side of the PEOs that fit your company →
Other PEOs worth considering
ADP TotalSource
The largest PEO in the country by worksite employees, CPEO certified and ESAC accredited, with the deepest benefits buying power available. For a GMS client whose complaint is the medical renewal, it is the clean test of whether scale fixes it. The tradeoffs: percentage-of-payroll pricing gets expensive as salaries grow, and service runs through call-center pods rather than a local team. Our ADP TotalSource review goes deeper.
CoAdvantage
A CPEO and ESAC-accredited regional PEO founded in 1997, serving 10 to 250 employee companies with strength in Florida and the Southeast and competitive workers comp pooling, which is what makes it relevant to a GMS book. It merged with PrimePay in June 2025, so ask about service-team continuity. See the CoAdvantage comparison.
Who should not leave Group Management Services (GMS)
Group Management Services (GMS) is built for small and mid-size blue-collar employers, ohio, midwest and southeast businesses, companies with heavy workers' compensation exposure, owners who want a nearby branch office rather than a call center. Its published sweet spot is 5 to 250 employees (sweet spot: 10 to 100) and it writes construction, manufacturing, transportation and logistics, staffing, home health care, landscaping and janitorial. If your company sits inside all three of those, the case for moving has to come from price or service, not from fit, because on fit you are already in the right place. Three specific reasons to stay:
- Listed on the IRS Certified PEO register as Group Management Services Inc, effective January 1, 2018
- Roughly 25 U.S. offices with local service teams, grown organically and through several PEO acquisitions since 2018
- Deep workers' compensation and safety practice, including self-insured status in Ohio since 2014
If none of those three describes why you bought Group Management Services (GMS), that is the real signal, and the providers above are where to look. Group Management Services (GMS)'s own profile says it is not the right fit for: venture-backed tech companies wanting a software-first platform; employers needing international or global payroll; buyers who require esac accreditation alongside irs certification.
When the timing is wrong to switch from GMS
Leaving is the right call only when the math is clearly better elsewhere. Several situations argue for staying even when the renewal stings.
You are mid-contract. GMS agreements are typically annual, but notice periods and exit language vary, and breaking a term early usually means accelerated fees or liquidated damages. Read the termination section of the Client Services Agreement before you take a sales call.
You are mid-plan-year. A mid-year switch means a W-2 split for every employee, two sets of tax filings, a 401(k) blackout during the plan transfer, and benefits re-enrollment mid-calendar-year. There is a SUTA consideration too: your state unemployment position resets in ways that depend on the state and the structure.
Your comp program is working. If GMS has taken losses out of the business and the modifier reflects it, you are buying a risk program, not a PEO, and a new carrier re-underwrites you from scratch.
You are hiring hard or integrating an acquisition. Lock the workforce, then change the infrastructure.
Your branch team is the reason HR functions. Trading local people for a pooled national center to save a few dollars per head rarely ends well.
Alternatives to GMS without co-employment
A meaningful share of people searching for GMS alternatives do not want another PEO. They want out of co-employment itself: the PEO as employer of record on the W-2, the master health plan, the shared comp policy. Three real options.
ASO (administrative services only). The same payroll, HR and compliance administration, but you stay the employer of record and buy benefits and workers compensation in your own name. You keep your plans, carriers and modifier, and give up the pooled pricing that is usually the largest line in a PEO's favor. For a blue-collar employer with real loss history this most often backfires: your comp premium in your own name is the number the PEO was smoothing.
Payroll software plus a benefits broker. Gusto, or a comparable platform, with a separate broker placing medical, dental and comp. Cheapest in software cost, most work for you, and benefits priced on your own group, which is fine for a healthy census and painful for a small or older one. It works for a company with an in-house HR person.
EOR for the out-of-state minority. If co-employment only exists because of a few employees in states where you have no entity, an employer of record for those people plus normal payroll for everyone else can replace the PEO. Per-head cost climbs fast.
How to decide: put the GMS renewal, an ASO quote and a payroll-plus-broker quote on one page, total annual cost including benefits and comp. Within a few percent, control is usually worth it. A gap of 10% or more means the pooled pricing is doing real work and the better move is a different PEO.
What to compare before you leave GMS
Put every quote on the same census and compare six things: the admin fee structure (per employee per month or a percentage of payroll), master health plan versus carve-out, workers comp master policy versus your own, CPEO status, coverage in every state you employ in, and exit terms. The full checklist is in our ranking of the best PEOs and our switching guide covers the process step by step. If you would rather not run it yourself, the free side-by-side puts GMS and the providers above on one page on identical assumptions.
What switching actually takes: the implementation timeline
For most small and mid-sized businesses, implementation runs about four to eight weeks from a signed agreement to the first PEO-processed paycheck; mid-market employers with more locations and carriers take longer. The sequence is predictable: a signed Client Services Agreement opens a benefits enrollment window of roughly two to four weeks, then payroll cutover, then the first PEO-processed paycheck.
The work divides cleanly, and it is worth confirming that division in writing before you sign. The incoming PEO does the heavy lifting: state registrations, tax setup, benefits enrollment communications. You provide the employee data, the carrier elections and the cutover decisions. For a comp-heavy employer leaving GMS, add one item: the new carrier will re-underwrite the risk from your loss runs, so start that earlier than the benefits work.
Timing decides how smooth it feels. A mid-year switch adds complexity mainly because of W-2 reporting: every employee ends up with one W-2 from the outgoing PEO through the switch date and a second from the incoming PEO for the rest of the year. Doable, sometimes necessary, but a reason to plan the date. More in our guide to switching PEOs.
FAQ
Is GMS a certified PEO?
Yes. Group Management Services Inc appears on the IRS Certified PEO register effective January 1, 2018, which covers sole liability for federal employment taxes. That is separate from ESAC accreditation, the industry's financial assurance program, which GMS does not carry.
Why do companies look at GMS alternatives?
The renewal moved faster than payroll did, usually on the medical line. The company grew past the Midwest and Southeast footprint where the offices are, so the branch advantage stopped applying. A finance leader screened on ESAC accreditation and found GMS is not listed. Or the comp modifier improved and the owner wants it repriced.
Which GMS alternative is best for construction and trades?
FrankCrum and BBSI, in different ways. FrankCrum underwrites comp through its own affiliated carrier and offers pay-as-you-go premiums. BBSI self-insures in several states and puts a risk specialist on the account team. GMS holds its own: self-insured in Ohio since 2014, and it quotes trades payrolls others decline.
Will my benefits get worse if I leave GMS?
It depends which way you move. GMS reports more than 50,000 worksite employees, real pooling but less medical leverage than a national PEO carries. Moving up to a national program can improve renewal stability; moving sideways to a similar regional PEO usually produces a similar plan at a similar price. Ask finalists for plan documents and renewal history.
Does GMS publish its pricing?
No. The site lists package tiers and add-ons and then routes buyers to a quote form. That is normal here: FrankCrum, BBSI, Questco and The Employer Group all quote per client too. Ask every provider for a full fee schedule and a sample invoice, with the administrative fee, the benefits cost and the comp cost broken out separately.
How long does it take to switch to a new PEO?
For most small and mid-sized businesses, implementation runs about four to eight weeks from a signed agreement to the first PEO-processed paycheck; mid-market employers with more locations and carriers take longer. The path is a signed Client Services Agreement, then a benefits enrollment window of roughly two to four weeks, then payroll cutover, then the first PEO-processed paycheck. The incoming PEO handles state registrations, tax setup, and benefits enrollment communications; you provide the employee data, the carrier elections, and the cutover decisions. Mid-year switches add complexity, mainly because of W-2 reporting, so the cleanest transitions are timed to the plan year.
What hidden costs should I watch for in a PEO agreement?
The ones that most often get missed are one-time implementation or setup fees, payroll-related charges (off-cycle runs, manual checks, amended filings, custom reports), minimum monthly fees, termination fees and early-exit penalties, year-end processing fees, HR project fees, state registration fees, and benefits administration charges. Renewal increases are the biggest one: attractive first-year pricing can climb at renewal, so ask in writing how renewals are handled. The defense is simple: request a full fee schedule and a sample invoice before signing, and ask the provider to identify every charge that could apply to your company.
The practical takeaway
GMS is a good PEO for the employers it was built for, and the comp and safety bench is harder to replace than buyers assume when they shop on price alone. The two honest pressure points are financial assurance, where IRS certification without ESAC leaves a question a careful CFO will ask, and medical leverage, where roughly 50,000 worksite employees does not buy what a national program buys. Test both with real quotes, compare total annual cost including benefits and comp rather than the administrative fee, and time any move to the plan year. If the math says stay, stay. If it says switch, switch deliberately, with loss runs and census in order. Start with our best PEOs overview.
If you would rather have the comparison done for you: tell us about your company and an advisor comes back with the two or three PEOs worth quoting, at no cost to you.