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September 15, 2026 · 8 min read

If you have looked into level funding or self funding, you have run into the term TPA without anyone quite explaining what the company behind the initials actually does. Here is the plain version.

Written by Wade Secrest · Professional Insurance Solutions

The short answer

A TPA — third-party administrator — is a company hired to run the operational side of a health plan without being the one taking on the insurance risk. It processes claims, issues ID cards, staffs a customer service line, builds the provider network access, and handles enrollment paperwork. The employer, not the TPA, is the one financially responsible for the claims on a self-funded or level-funded plan.

That distinction is the entire reason TPAs exist. On a fully insured plan, one company — the carrier — does everything: takes the risk, processes the claims, and keeps whatever is left over. Self funding separates those jobs. A stop-loss carrier takes the catastrophic risk, the employer’s claims fund takes the routine risk, and the TPA does the administrative work neither of those parties is set up to do.

What a TPA actually does day to day

The job is less glamorous than the acronym suggests, and that is exactly the point — a good TPA is the reason an employee’s claim gets paid correctly the first time instead of becoming a phone-tag project.

Claims adjudication — receiving a medical bill, checking it against the plan design and the provider’s contracted rate, and paying the correct amount. The single highest-volume, highest-stakes function a TPA performs, and the most common source of employee complaints when it goes wrong.
Network access — most TPAs lease access to an existing national or regional network rather than building their own, so employees see the network discount without the TPA negotiating directly with every hospital.
Enrollment and eligibility — tracking who is covered, processing new hires and terminations, and producing the census data the stop-loss carrier and the employer both need at renewal.
Reporting — monthly and year-end claims reports showing exactly how the plan is running against what was funded, which is what a level funded refund or a self-funded renewal decision is actually built on.
Member service — the phone number on the ID card. Who an employee calls when a claim looks wrong, a provider says they are out of network, or they need a new card.

TPA versus insurance company: the difference that matters

An insurance company sells a fully insured policy, collects a premium, and keeps the underwriting risk — if claims run high, the carrier absorbs the loss; if claims run low, the carrier keeps the difference. A TPA does not sell insurance and does not carry that risk at all. It is paid a flat administration fee, usually a fixed dollar amount per enrolled employee per month, regardless of how the plan’s claims perform.

This is why a TPA has no financial incentive to deny legitimate claims — their fee does not change either way — and equally no financial stake in your plan running efficiently the way a fully insured carrier does. The employer carries the outcome; the TPA carries the workload.

Where the TPA sits on a level funded plan

On a level funded plan, the employer’s single monthly payment splits three ways: a claims fund, a stop-loss premium, and the TPA’s administration fee. The TPA is the one drawing from that claims fund to pay bills as they arrive, which means the TPA’s competence directly affects whether the plan runs smoothly or generates a steady stream of employee frustration.

Because of that, evaluating a level funded proposal is really evaluating two things at once: the numbers, and the TPA behind them. A slightly cheaper proposal attached to a TPA with a poor claims-processing reputation is frequently the more expensive choice once the service cost is counted.

What to ask about a TPA before you sign

Which network does the TPA lease, and do your employees’ current doctors and hospitals participate in it?
What is the TPA’s average claims turnaround time, and do they publish it?
Is member service staffed directly by the TPA, or outsourced to a call centre?
How does the TPA handle a disputed or denied claim — is there a real appeals process?
Has the agency placing this plan worked with this TPA before, and what has that relationship actually looked like at renewal?

Weighing level funding and want to know who would administer it?

Every level funded proposal we bring you names the TPA behind it, and we check that TPA’s claims-processing track record before we ever put the quote in front of you. Send us your census and renewal date and we will show you the whole picture. We place group benefits and Medicare coverage across twelve carriers.

Get a level funded comparison(361) 462-4125

Common questions

The follow-ups we field most often after this conversation.

Third-party administrator. It is a company that handles the administrative functions of a health plan — claims processing, network access, enrollment, member service — without being the insurer or carrying the plan’s financial risk. The term shows up almost exclusively on self-funded and level-funded plans, where those two jobs are handled by separate companies rather than bundled into one carrier.

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