Self insured stop loss (also called stop‑loss insurance) is a financial backstop for employers or plan sponsors that pay employee medical claims directly. It protects a self-funded health plan from unusually large or unpredictable claims by limiting the plan’s exposure above an agreed attachment point. Policies commonly include specific (individual) and aggregate stop‑loss components to cover catastrophic individual claims and total plan volatility.
Who needs it
Employers, associations, payroll-based organizations, and other plan sponsors who prefer to fund health benefits themselves often buy stop‑loss to stabilize cash flow and protect reserves. Smaller employers that want predictable budgeting but can tolerate routine claims may choose a higher attachment point, while larger employers or third‑party administrators use stop‑loss alongside risk management and pharmacy benefit controls.
What it typically covers
Stop‑loss policies usually cover:
- Specific stop‑loss: protection for an individual’s medical claim above the per-person attachment point.
- Aggregate stop‑loss: protection when total plan claims exceed a percentage of expected claims.
- Catastrophic medical events such as major surgery, transplant, or oncology treatment that drive claims well above normal levels.
Insurers price coverage based on expected claim costs, claim volatility, industry, plan design, and any third‑party risk transfers. Learn more about general market options on the Stop Loss Insurance page.
Common exclusions or limitations
Typical exclusions include pre‑existing condition clauses (for specified look‑back periods), experimental treatments, certain mental health or substance use services if limited by the contract, and claims related to acts of war or intentional self‑harm. Most contracts also include specific documentation and claim reporting requirements. For details on programs tailored to qualifying self‑insured health plans, see the Medical Stoploss Program (For Qualified Self-Insured Health Plans).
Factors that influence cost
Key underwriting factors are:
- Attachment points (higher attachment = lower premium).
- Plan population size, age and gender mix, and historical claim experience.
- Benefit design, including prescription drug coverage and stop‑loss corridors.
- Industry or employer risk profile and any previous large claims.
Carriers also consider network arrangements, stop‑loss aggregations, and the use of cost containment strategies such as case management and specialty pharmacy programs. For coverage geared toward excess exposures and self‑insured risks, you can review options at Excess Medical Stop Loss Coverage for Self-Insured Risks.
Proof of insurance & compliance
Plan sponsors usually receive a policy or binder showing attachment points, policy limits, and covered perils. Stop‑loss is a commercial insurance product—state rules and reporting requirements for self‑funded plans vary, so sponsors should keep coverage documents and certificates accessible for auditors or brokers.
How to get a quote
To get a competitive quote, prepare recent claims data, census information, plan summaries, and any current stop‑loss or reinsurance terms. You can also talk to your agent who can compare carriers, explain attachment point options, and coordinate underwriting. Many brokers will run modeled scenarios showing how different attachment points affect premiums and retained risk.
Frequently Asked Questions
How does specific stop‑loss differ from aggregate stop‑loss?
Specific stop‑loss protects against large claims from an individual, while aggregate stop‑loss protects the plan when total claims exceed an expected threshold over a period.
Can a new employer get stop‑loss without prior claims history?
Yes; carriers will underwrite based on census data, industry norms, and employer risk factors. Premiums may reflect the uncertainty of limited historical data.
Does stop‑loss replace wellness or cost‑control programs?
No. Stop‑loss limits downside risk from high-cost claims but works best with case management, care coordination, and pharmacy controls to manage overall costs.
Still have questions? Talk to a local insurance expert.