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Case Reserving

The process of establishing a specific dollar reserve for an individual open claim, representing the estimated total cost to resolve that claim.

industryPublished 2026/06/07Last verified 2026/06/07

FAQs

Who sets case reserves?
The assigned claims adjuster typically sets and updates case reserves, subject to supervisory review above defined dollar thresholds. Actuaries review reserve adequacy in aggregate rather than file by file.
What happens if case reserves are consistently too low?
Chronic under-reserving results in adverse loss development, which surprises management and investors, distorts pricing decisions, and can trigger regulatory intervention. It also inflates reported profitability in early periods.
How does AI improve case reserving?
Predictive models analyze claim characteristics — injury type, jurisdiction, claimant demographics, litigation indicators — against historical outcomes to recommend reserve levels. This reduces adjuster-to-adjuster inconsistency and flags outlier reserves for supervisory review.

Related Terms

  • Bulk Reserving

    A reserving method applying statistical factors to groups of claims rather than setting individual case reserves, used for high-volume low-severity lines.

  • IBNR Reserve

    Incurred But Not Reported reserve: a liability estimate for losses that have occurred but have not yet been reported to the insurer.

  • Allocated Loss Adjustment Expense

    Expenses directly attributable to a specific claim, such as attorney fees, independent adjuster fees, and expert witness costs.

  • Medical Case Management

    A coordinated approach to managing injured claimants' medical care to promote appropriate treatment, recovery, and return to work while controlling claim costs.

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  • Guidewire

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  • Claim Genius

    AI auto damage assessment

  • Charlee.ai

    Predictive analytics for claims litigation

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Case reserving is the practice of setting a specific financial liability estimate for each individual open claim on an insurer's books. The case reserve represents the adjuster's best estimate, at a given point in time, of the total amount the insurer will ultimately pay to close that claim — including indemnity payments, legal fees, and other allocated loss adjustment expense.

How it works / Why it matters

Accurate case reserves are foundational to an insurer's financial health. Reserves appear as liabilities on the balance sheet, and their aggregate accuracy drives reported loss ratios, statutory surplus, and pricing decisions. Under-reserving overstates surplus and understates the indemnity expense ratio; over-reserving unnecessarily ties up capital and distorts profitability metrics.

Adjusters set initial reserves when a claim is first reported, using whatever information is available at that stage — the FNOL (first notice of loss) report, policy details, and historical benchmarks for similar losses. Reserves are then updated as the claim develops: new medical reports arrive, liability investigations conclude, or litigation is filed. The difference between the initial reserve and ultimate settlement is called reserve development, and systematic patterns of development reveal adjuster quality and reserving methodology gaps.

Regulators require carriers to maintain adequate reserves, and actuaries conduct periodic reserve adequacy reviews. Loss reserve opinions by appointed actuaries are filed with state insurance departments annually. Significant adverse development can trigger regulatory scrutiny or corrective action plans.

In practice

On a workers' compensation claim, the initial case reserve might be set at $25,000 based on the reported injury type. As the claimant undergoes surgery and extended physical therapy, the adjuster updates the reserve to $95,000. If the claim enters litigation, the reserve escalates further to reflect potential jury verdict exposure. Medical case management interventions can reduce ultimate settlement costs and allow reserve reductions.

Modern claims platforms such as Guidewire automate reserve-change workflows, requiring supervisor approval above defined thresholds and generating audit trails. AI-based tools like Claim Genius and Charlee AI provide predictive reserve recommendations by analyzing claim attributes against historical outcomes, helping adjusters set more accurate initial reserves and identify under-reserved files earlier.

Related concepts

Bulk reserving complements case reserving by establishing reserves for claims reported but not yet individually evaluated. Together with IBNR reserves, case reserves form the three components of a carrier's total loss reserve liability.