A TPA performance review is a documented, periodic evaluation of a third-party administrator's claims accuracy, financial payment accuracy, service levels and regulatory compliance measured against the plan document and contract terms. Plan sponsors conduct these reviews, often alongside an independent claims audit, to satisfy ERISA fiduciary duty and control health plan spending.
A manufacturer with 1,400 employees ran its first independent claims audit in 2024, eighteen months after switching TPAs. The review turned up $812,000 in overpayments, including one inpatient claim paid twice for $47,000 and 63 dependents who should have been dropped from the plan years earlier.
None of it showed up in the TPA's own quarterly reports, which had shown claims processing at close to 100% accuracy the entire time. That gap between what a TPA reports and what actually happened in the claims system is the whole reason a real TPA performance review matters.
What a TPA Performance Review Actually Involves
A TPA performance review is a structured comparison of what your administrator promised against what actually happened inside the claims system. Most HR leaders assume this already happens because the TPA sends a quarterly report. But that’s not really a performance review.
Those quarterly reports are usually built from the TPA's own internal quality assurance process. That process checks a sample of claims the TPA itself selects, using criteria the TPA itself sets. It's a bit like asking a contractor to grade their own home inspection. The answer will look fine on paper even when the wiring underneath is a mess.
A real review independently checks whether the TPA followed your plan's rules, paid the right amounts, processed claims correctly, and handled them within the promised time.
Why the Oversight Gap Exists
The gap exists because TPAs aren't financially responsible for the health plan, so accuracy isn't tied to their bottom line the way it's tied to yours. A carrier selling fully insured coverage eats the cost of its own claims mistakes. A TPA administering a self-funded plan does not; the plan pays for every claim, correct or not, and the TPA gets paid its administrative fee either way.
That's not a knock on any single TPA's intentions. Most administrators run large books of business, process claims through automated adjudication systems, and genuinely try to get it right. But the financial incentive to catch every dollar of leakage simply isn't as sharp as it would be if the money came out of their own pocket.
Staff turnover at the TPA, changes to plan documents that don't always get reflected correctly in the claims system, and coordination of benefits cases that require manual decisions can all create opportunities for errors. Industry estimates suggest that claims administrator error rates typically fall between 1% and 3% of claims processed, with higher rates possible for more complex plans.
The Real Cost of Skipping the Review
Claims errors are not a rounding error. On a plan paying tens of millions of dollars a year in claims, even a 2% error rate adds up to real money leaving the plan. Independent estimates suggest overpayment error rates run somewhere between 2% and 5% of total medical claim costs annually, even at well-regarded claims administrators. That's before counting dependent eligibility errors, which are a separate and often larger category of leakage.
The manufacturer example above isn't an outlier. One claims analytics firm reports finding error detection rates of 5% to 15% across its client base, with average findings between $500 and $1,200 per covered employee per year. For a 1,000-life plan, that's potentially half a million dollars a year sitting in unreviewed claims.
There's a regulatory cost too. The Department of Labor's Employee Benefits Security Administration recovered more than $1.4 billion for retirement, health and welfare plans in fiscal year 2025, with more than half of that coming directly from enforcement actions. EBSA has named cybersecurity, mental health parity, surprise billing compliance and benefit distribution integrity as enforcement priorities heading into 2026, all of which touch claims administration directly.
What's Actually Happening Behind the Scenes
Benefit Determination Errors
This is the most common error category in claims processing. It happens when a claim is adjudicated against the wrong plan provision, the wrong deductible accumulator, or the wrong coordination of benefits order. A dependent still covered under a divorced spouse's plan, or a retiree who should have moved to Medicare, can generate months of misapplied payments before anyone notices.
Coding and Data Entry Errors
Errors also creep in through how information gets entered into the claims-processing system, including dates of service, diagnosis codes and procedure codes, any of which can change the reimbursement amount owed to a provider. These are rarely intentional. They're the kind of small keystroke mistake that compounds across thousands of claims a month.
Contract Rate Mismatches
Specialty drugs and out-of-network services are common trouble spots. A claim billed at a rate that doesn't match the negotiated contract, or a specialty pharmacy claim priced against the wrong fee schedule, can slip through automated systems that weren't built to catch every pricing exception.
Dependent Eligibility Drift
People change jobs, get divorced, and age off coverage, but plan sponsors rarely run a dedicated eligibility audit separate from claims review. Ineligible dependents quietly stay on the plan and keep filing claims until someone specifically goes looking.
Why the Status Quo Isn't Enough
Most plan sponsors already have some version of TPA oversight in place. The problem is that it's usually built around the TPA's own reporting, not an independent check.
How to Fix It: A Step-by-Step Approach
Red Flags That Signal a Problem on Your Plan
The ROI of Doing It Right
A properly scoped independent claims audit tends to pay for itself well within its first year, sometimes several times over. A comprehensive independent claims audit typically recovers 1% to 3% of annual claims spend in its first year, and that figure often exceeds the cost of running the audit itself. On a plan paying $20 million a year in claims, that's a recovery range of $200,000 to $600,000.
The savings don't stop at recovery either. Once a TPA knows its work is being independently checked, error rates on future claims tend to drop, because the incentive structure finally has some teeth. Think of it the way a restaurant behaves differently once it knows the health inspector shows up unannounced instead of on a predictable schedule.
There's also a fiduciary protection dividend that's harder to put a dollar figure on but matters just as much. A documented, prudent review process is exactly what ERISA asks of a fiduciary, and it's the strongest defense a benefits committee has if a claim, a lawsuit or a DOL inquiry ever puts that process under a microscope.
Conclusion and Next Steps
A meaningful TPA performance review isn't about assuming the worst of your administrator. It's about replacing an assumption with actual evidence, the same way any other vendor relationship involving tens of millions of dollars would get checked. The plan sponsors who skip this step aren't doing so out of negligence. They just haven't had a reason to look closely yet.
Start small if you need to. Pull your plan document, ask your TPA for claim-level detail instead of summary dashboards, and put a review date on the calendar for the next 90 days. If it's been more than three years since anyone independently checked your claims data, that's the clearest sign the review is overdue.
Frequently Asked Questions
How often should a self-funded plan review its TPA?
Quarterly service-level check-ins plus a full independent claims audit every one to two years is a reasonable baseline for most plans over 500 lives.
Who is legally responsible if a TPA pays claims incorrectly?
The plan sponsor. ERISA places fiduciary responsibility on the plan sponsor regardless of whether claims administration was delegated to a TPA.
What's the difference between a TPA's internal audit and an independent claims audit?
The TPA's internal audit uses its own sample and standards. An independent audit uses outside criteria and a sponsor-selected sample.
How many claims need to be reviewed to get a valid result?
A stratified random sample of roughly 200 to 400 claims, weighted by claim type and dollar amount, is generally considered statistically valid.
Does a claims audit clause exist in most TPA contracts?
Most contracts allow some audit rights, but many restrict frequency, scope or which firms can perform the audit.
Can a claims audit pay for itself?
Often, yes. First-year recoveries in the 1% to 3% range of annual claims spend commonly exceed the cost of the audit.
Should dependent eligibility be part of the same audit?
It can run alongside a claims audit, but treating it as a distinct workstream tends to surface more issues faster.
What documentation protects a plan sponsor in a DOL inquiry?
Audit reports, benefits committee minutes, a written review process and evidence that findings led to corrective action.
