Loss Runs

Loss Runs – A record of prior claims and claim activity tied to an insured, policy, or coverage period.

In plain language: Loss runs are the claim history records an insurer or administrator provides for a person or business. Think of them like a report card for prior claims: they show what happened, when it happened, and whether the claim is still open or closed. 

Technical definition: For insurance professionals, loss runs are claim-history summaries usually generated by a carrier, third-party administrator, or prior insurer and used in underwriting, renewal review, and marketing. A loss run report commonly lists claim dates, status, paid amounts, reserves, and basic loss descriptions tied to a policy, line of business, or insured entity. These records are most often associated with commercial lines, workers compensation, general liability, auto, and property, and they usually sit outside the policy form itself rather than on the declarations page or endorsements. This often varies by state and carrier; always check the specific policy form. 

A client asks for a quote, says they have “no major claims,” and wants fast turnaround. Then the underwriter asks for five years of claim history, and the account gets delayed because no one has a current loss run report. That happens all the time in commercial lines, especially when a business is moving carriers, renewing a large account, or trying to explain prior losses. 

TL;DR

Loss runs are records showing prior claims, paid amounts, reserves, and whether claims are open or closed. 

They matter in agency workflows because underwriters rely on them to evaluate accounts, price business insurance, and confirm the story told on applications. 

A common misunderstanding is that a client’s memory of past claims is enough; in many cases, a current loss run is still required. 

Best practice: request the right report early, document who requested it, and review it for accuracy before sending submissions. 

What Is "Loss Runs" in Insurance?

In practice, loss runs are historical claim summaries used to evaluate prior losses for a person or business. They do not usually grant coverage by themselves. Instead, they support underwriting, renewal analysis, account rounding, and carrier marketing by showing how losses developed over time. When someone asks what are loss runs, the simplest answer is that they are records of prior claim activity tied to an insured and a coverage period. 

A loss run may be requested for one line of coverage or for several lines, depending on the account. Agencies often need a loss run report before marketing business insurance to new carriers, especially for more complex or loss-sensitive accounts. It may include the insured name, claim number, date reported, date of loss, status, paid amounts, and outstanding reserves. Sometimes it also includes brief cause-of-loss notes and policy details.

These documents are closely tied to underwriting judgment. They help show whether losses were isolated, repetitive, severe, or still unresolved. They also help identify patterns that can affect eligibility, pricing, deductibles, or terms. For agencies, the key point is that a loss run is a snapshot of history, not a promise of future insurance coverage, and not a substitute for reading the actual policy. 

Key Related Terms to Know

Claims history – A broad term for prior claims connected to an insured, location, vehicle, or operation. A loss run report is one of the main ways claims history is documented for underwriting. 

Reserves – Amounts the carrier sets aside for expected future claim payments and expenses. Reserve funds can make an account look more severe than the amount already paid, especially on open claims. 

Open vs. closed claim – An open claim is still being adjusted, while a closed claim is considered resolved. This distinction matters because open claims can develop and change how underwriters view the account. 

Loss ratio – A comparison of claims to premium, often used by carriers to evaluate performance. Loss runs may supply some data used in that analysis, but they are not the full pricing model. 

Claims-made reporting context – For some coverages, timing matters greatly. A loss run report may help show prior reporting patterns, but it does not replace policy language on reporting requirements. 

Letter of experience – A separate document that may summarize account performance or coverage history. It is not always as detailed as loss run reports and may not satisfy every underwriter. 

Application representations – Information the applicant gives on a submission about prior losses and operations. If the application and loss runs do not match, that can create delays, credibility issues, or E&O concerns for the agency. 

Common Questions About Loss Runs

Why do underwriters ask for a loss run report? 

Underwriters want objective claim data, not just a client’s memory or estimate. A loss run report helps them review claim frequency, severity, trends, and whether there are unresolved exposures. In business insurance, this is especially important when accounts have multiple locations, vehicles, employees, or prior carriers. From an E&O standpoint, agencies should avoid assuming “no known losses” is enough when the underwriter specifically asked for documentation. 

What is a loss run and who usually provides it? 

If a client asks what is a loss run, explain that it is a claim-history summary generated by the prior insurer, administrator, or servicing party. The most common source is the current or prior insurance company, though some lines may involve TPAs or broker portals. The report may cover one policy period or several years, depending on the request. Agencies should confirm exactly which entities and years are needed so the submission package is complete. 

What are insurance loss runs used for besides quoting? 

Many people ask what are insurance loss runs used for if they already know their own claim record. They are often used at renewal, for internal account review, for renewal remarketing, and for large-account stewardship. They can also support risk management conversations by showing recurring loss causes or problem locations. A producer may use them to explain why terms changed, while an account manager may use them to reconcile reported losses against carrier records. 

How do I get a loss run report for a client? 

A common client question is how do i get a loss run report. Usually, the named insured or authorized representative requests it from the current or prior carrier, often in writing, with enough identifying information to locate the account. Some carriers accept email, portal requests, or signed authorization forms. Agencies should document the request date, follow up if it is delayed, and avoid promising exact turnaround times because response practices vary. 

Why do open claims matter so much on a loss run? 

Open claims matter because they can change. Even if only a small amount has been paid so far, the total insurance loss may increase if medical treatment continues, repairs expand, or liability facts worsen. Underwriters often focus on status, reserves, and trend, not just what has already been paid. Agencies should help clients understand that “it’s almost done” does not mean an underwriter will treat it like a closed file. 

Can a loss run be wrong? 

Yes, a loss run can contain errors, outdated status entries, wrong entities, or incomplete claim information. That is why agencies should review the report before sending it out, especially if the client says a claim was closed, withdrawn, or assigned to the wrong location. If the data appears incorrect, ask the client to work with the prior carrier to correct it rather than trying to explain away the issue informally. Good documentation helps reduce E&O exposure when timing is tight and insurance quotes are pending. 

Loss Runs vs. Claims Activity Report

People often use these terms interchangeably, but they are not identical. Claims history is the broader concept, while loss runs are a specific report format used to document and communicate that history for underwriting and account review. 

For agencies, the practical distinction is simple: claims history may be discussed on an application or in conversation, but loss run reports are often the actual evidence underwriters expect. If an application says no losses and the documents show otherwise, that mismatch can affect underwriting commercial insurance and create avoidable trust issues. 

Real Claim Examples Involving Loss Runs

Scenario 1: A contractor asked an agency to move its general liability and auto to a new market before renewal. The owner said there had only been “one small fender-bender,” so the producer submitted the account before current loss runs arrived. When the underwriter reviewed the later insurance loss run report, it showed two additional liability claims and one still-open auto claim with significant reserve funds. The account was not declined, but pricing changed and terms tightened. The lesson was straightforward: for business insurance submissions, the agency should wait for a current loss run or clearly disclose that claim data is pending and subject to change.

Scenario 2: A retail business sought lower pricing on several business insurance policies after years with the same carrier. The account manager requested loss run reports, but one location was left off the authorization request because the named insured had recently reorganized entities. The returned loss runs looked clean, so the submission went out. A new underwriter later discovered separate claims activity tied to the omitted entity and questioned the entire application. Coverage was still placed, but the process was delayed, the client was frustrated, and the agency had to document exactly how the request was made. The takeaway: verify named insureds, policy number references, and related entities before sending a request. 

Scenario 3: A manufacturer was preparing for renewal of a commercial insurance policy and wanted better terms on property and liability. The latest loss run report showed several slip-and-fall allegations, most with low paid amounts but one among the open claims. During review, the producer noticed the status notes did not match what the client believed had been resolved. After follow-up, the prior carrier updated the claim status and corrected settlement costs tied to an unrelated file. That cleaner presentation helped the underwriter perform a more accurate risk assessment of the account’s risk profile. The account still faced higher insurance costs, but the corrected data supported a fairer presentation of its insurance claims history. 

Limitations and Common Mistakes in Understanding Loss Runs

A loss run is not the policy itself and does not change the actual insurance coverage provided under a form, endorsement, or exclusion. 

Agencies sometimes assume one loss run report covers every line, but different insurance providers may issue separate records for workers compensation, auto, property, or liability. 

Clients may confuse coverage dates with the dates a claim was reported or closed, so review each report carefully before submission. 

Some insureds ask what is an insurance loss run or what are loss runs only after a deadline is close; requesting records late can slow marketing and renewal strategy. 

A report may not fully explain claim severity. A low paid amount with high reserves, missing closure notes, or incomplete claim status can distort the picture. 

E&O problems often arise when the agency summarizes coverage history from memory instead of obtaining insurance carrier reports and preserving written communication. 

How to Explain Loss Runs to Clients

Personal Lines-style explanation: “Think of a loss run like your claim history summary. It shows prior claims, whether they were paid, and whether any are still open. If an insurer asks for one, they are trying to confirm your insurance history, not accuse you of doing anything wrong.” 

Small Business owner explanation: “When a new carrier reviews your business insurance, they usually want more than an application. They want a loss run report so they can see prior losses by date, amount, and status. The cleaner and more accurate that report is, the easier it is to present your business insurance account properly.” 

CFO or Risk Manager explanation: “For larger accounts, we use loss run reports to support submission strategy, renewal planning, and discussions around commercial insurance coverage. We review them for entity accuracy, policy period matching, and unresolved claims before marketing. If you are asking what is a loss, in this context it means an event that generated a claim or payment record under prior coverage, and that data shapes underwriting decisions.” 

If a client asks what is a loss run, what are insurance loss runs, what is an insurance loss run, or how to request loss runs, the practical answer is the same: it is a formal record of prior claims used to evaluate future placement. In business insurance, getting an accurate insurance loss run early can improve timelines, support better submissions, and reduce surprises. This often varies by state and carrier; always check the specific policy form.