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The largest U.S. third-party administrator depends on the segment and measurement used. In Business Insurance’s 2025 ranking, based on 2024 revenue from claims handled for employers, UMR led benefits-only TPAs, while Sedgwick led multiline TPAs. Those are separate rankings, not a single overall leaderboard.
Largest TPAs by 2024 revenue
Business Insurance ranked these companies by 2024 gross revenue from claims handled for employers. The figures below are segment-specific survey figures, not total corporate revenue or market share. The report was published in 2025. See the ranking tables and methodology.
Benefits-only TPAs
This table excludes managed care and medical billing services.
| Rank | Company | 2024 revenue from employer claims handled |
|---|---|---|
| 1 | UMR Inc. | $2,133,000,000 |
| 2 | Meritain Health | $714,570,000 |
| 3 | Luminare Health Benefits Inc. | $448,313,775 |
| 4 | Health Plans Inc. (HPI) | $84,213,328 |
| 5 | Amalgamated Employee Benefits Administrators Inc. | $68,844,000 |
Multiline TPAs
Business Insurance defines multiline TPAs as companies spanning employee benefits and/or property and casualty and/or workers compensation.
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- 【HIGH CAPACITY】This filing cabinet consists of two drawers of the same size, which are large enough to accommodate A4, letters, file boxes, legal documents, etc. The drawers are also deep enough to store some office supplies.
- 【HUMANIZED DESIGN】The steel ball bearing full extension drawer slide is noiseless, will not affect the work of others, and always maintain a quiet environment. The extra-long drawer handle design of the file cabinet makes it more convenient to open the drawer
- 【UNIQUE DESIGN】This file cabinet can lock 2 drawers at the same time with one lock, and is equipped with 2 keys. Business card holders on drawers can also be labeled according to the different documents stored.
- 【HIGH QUALITY】Although this filing cabinet is lightweight, it is also very sturdy. It is suitable for home or office use, providing more convenience for your office environment. The surface of the file cabinet has a smooth coating treatment, which can be waterproof and easier to clean
- 【NEED TO ASSEMBLE】vertical file cabinets with lock need simple assembly, we will have assembly instructions to help you complete the assembly. If you have any problems with the installation, you can contact us at any time by email, and we will provide you with the best solution
| Rank | Company | 2024 revenue from employer claims handled |
|---|---|---|
| 1 | Sedgwick Claims Management Services Inc. | $2,012,237,803 |
| 2 | Gallagher Bassett Services Inc. | $877,362,195 |
| 3 | ESIS Inc. | $282,000,000 |
| 4 | Crawford & Co. | $209,000,000 |
| 5 | Helmsman Management Services LLC | $181,284,861 |
Why the largest TPA depends on the definition
A benefits-only administrator and a multiline claims administrator operate in different segments, so their rankings answer different questions. The Business Insurance figures measure revenue from claims handled for employers within the report’s category definitions. They do not establish enrollment, total company revenue, market share, or which firm is the best fit for a particular employer.
UMR also describes itself as the nation’s largest TPA. Its About page says it serves more than 3,800 benefit plans and 6 million members. These are UMR’s company-reported scale claims, distinct from the independent revenue-based ranking. UMR’s About page.
Rank #2
- 【Simply Modern for Seamless Room Integration】The CUSTOS Collection features clean right‑angled silhouettes that blend seamlessly into your living space. Pair it with complementary storage pieces from the same line to achieve a unified, coordinated aesthetic.
- 【Efficient File‑Storage Solution】 This 2‑drawer filing cabinet lets you sort and retrieve documents effortlessly. It comes with two roomy drawers fitted with adjustable hanging rails, supporting both A4 and letter‑size file folders.
- 【Space‑Saving Multi‑Purpose Design】 Measuring 15.7"D × 16.1"W × 27.6"H, this home‑office filing cabinet tucks neatly under most desks for space‑efficient storage. Beyond document organization, it also works great as a printer stand.
- 【Lockable 360° Swivel Casters】Equipped with five 360‑degree swivel casters for effortless cabinet mobility. The two front casters feature locking brakes to hold the cabinet securely in position when stationary, while the fifth caster mounted on the bottom drawer further enhances overall stability.
- 【Hassle‑Free Assembly】 Clearly marked components and illustrated step‑by‑step instructions simplify assembly for this 2‑drawer filing cabinet. Get your home office or study neatly organized in no time.
Are these the latest TPA rankings?
Not necessarily. Business Insurance’s 2026 directory advertises 2025 revenue data and listings for the largest claims-handling, multiline, and benefits-only TPAs, but detailed entries are not available here. The tables above should therefore be read as the 2024 revenue ranking published in 2025—not as a verified ranking of 2025 revenue. Business Insurance 2026 directory listing.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What regulatory lists can—and cannot—tell you
State TPA lists help establish whether entities appear on a state’s licensing or registration list; they are not national size rankings. New Jersey publishes a list of TPAs licensed and/or registered as of July 2026, while South Dakota says its listing is current as of July 2025. New Jersey TPA list · South Dakota TPA listing.
Quick Recap
Best Value
- Fireproof and water-resistant: Fireproof lock box is made of double layered non-itchy silicone coated fiberglass which stands up the temperature up to 2000℉.It has passed the UL94 -V0/5VA flame retardant test.Fireproof file box is not only fireproof but also high water resistant in case it gets wet for any reason.Nothing is completely foolproof, but added protection is always a good idea.
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- Portable and secure: High quality combination lock design for added storage security, includes instruction manual for combination lock. Sturdy adjustable handle makes it easy to carry everything you need(You can adjust the carrying handle to the length you want), two zippers make it easier to open and close the box, Side pockets and label slots let you store small items and labels.The file lock box collapses down simply for easier storage when not in use.
- Dimensions: 15.55" x 12.2" x 10".The fireproof lock box fits both letter and legal size files fitting your filing system,it also can protect your important documents,books,CDs, DVDs,USBs,albums,passports, social security cards,birth certificates and other valuables.Combining our fireproof bag and fireproof safe box together is the best solution to offer your documents and valuables a complete protection in any fire accident.
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Rank #4
- 【Robust and Sturdy】The metal file cabinet is made of thick cold-rolled steel,strong and robust, not easy to deformation.Moreover, it is rust proof, corrosion-resistant, and easy to clean.The home filling cabinet has 4 adjustable feet at the bottom for better balance
- 【Safe and Fashionable Design】The under desk drawer cabinet with lock, equipped with two keys, can increase the security and privacy of your files.Two drawers can be locked or opened simultaneously. Fashionable exterior design can perfectly blend into your office or home
- 【Spacious Storage Space】The file folder cabinet size: 18"W X 15 "D X 24.8 "H,the filing cabinets has two large and deep drawers,It can store office files, letters, and books, making your office supplies well-organized
- 【Widely Applicable Scenarios】The vertical file cabinet can be used as a printer stand, and the two large drawers have enough space to store files and other daily items. In addition to the office, it can also be placed in the bedroom and living room to store daily necessities
- 【Assembly Required】The locking filing cabinet require simple assembly, and we provide installation instructions and tools in the package. You only need to perform simple operations to complete the installation
Rank #3
- Metal Material:File cabinet is made of 0.8mm thick steel,whole is solid and does not deform, and it is stronger than wooden filing cabinets in terms of firmness, durability, moisture resistance, and fire protection
- Practical Design:5 Wheels and 360° rotation caster wheel design easier to move while prevent tipping ,the first two casters can be locked for accident roll away.Hanging-file drawer with adjustable hanging bars can perfectly store letters, legal and A4 size folders front to back or side by side
- Privacy Security:1 lock secures all three drawers, comes with 2 keys for your locking
- Home & Office:Modern delicate appearance can match your other furniture perfectly and adds fashion magic and charm to your office & home, it’s perfect height make it can be placed under desk
- Easy Installation:Letaya File Cabinet no assembly required Except Wheels
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