One catastrophic claim could cost your business $500,000+ and derail your entire self-funded health plan. Stop-loss insurance is your financial safety net—but only if you understand the contract terms, deductible structures, and coverage types that determine whether you’re truly protected or dangerously exposed.
Explore our self-funded PPO solutions with built-in stop-loss protection designed to maximize savings while minimizing risk for your business.
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What Is Stop-Loss Insurance? (And Why Every Self-Funded Employer Needs It)
Stop-loss insurance is not health insurance for your employees—it’s financial reimbursement protection for your business. When healthcare claims exceed predetermined thresholds, stop-loss insurance reimburses your company, preventing catastrophic or unexpectedly high claims from destabilizing your self-funded plan’s budget.
Without adequate stop-loss protection, a single employee’s cancer diagnosis, premature birth, or organ transplant could create a six-figure liability that threatens your company’s financial stability.
The Two Essential Types of Stop-Loss Coverage
1. Specific Stop-Loss (Individual Claim Protection)
Protects your plan from extremely high claims from any single employee. Once an individual’s claims exceed your specific deductible, the stop-loss carrier reimburses your business for the excess.
2. Aggregate Stop-Loss (Total Claims Protection)
Protects your plan from unexpectedly high total claims across your entire employee population. When your group’s combined claims exceed the aggregate attachment point, coverage kicks in.
Think of it this way: Specific stop-loss protects against individual catastrophes. Aggregate stop-loss protects against widespread higher-than-expected utilization.
Critical Stop-Loss Terms Every Employer Must Understand
Critical Stop-Loss Terms Every Employer Must Understand
| Term | Definition | Why It Matters |
| Specific Deductible | Dollar amount the employer pays for a single member’s claims before stop-loss reimbursement begins | Determines your maximum exposure per individual; typical range: $30,000-$100,000 |
| Aggregate Attachment Point | Total claims amount for the entire group that must be exceeded before aggregate stop-loss pays | Caps your total annual claims liability; calculated using your agg factor |
| Agg Factor (PEPM) | Per-employee-per-month dollar figure used to calculate annual aggregate attachment point | Directly impacts your monthly funding requirements and total financial exposure |
| Contract Type | Defines which claims are eligible based on when incurred and when paid | Determines coverage gaps—wrong contract type can leave you exposed to uncovered claims |
| Run-Out (Claim Lag) | Period after plan year ends during which claims incurred during that year can still be submitted | Without adequate run-out, late-arriving claims fall outside coverage |
| Laser | Higher specific deductible applied to individuals with known high-cost conditions | Used to manage pre-existing expensive conditions like dialysis or cancer treatment |
Stop-Loss Contract Types: Understanding Your Coverage Window
Contract type is absolutely critical—it determines which claims your stop-loss carrier will reimburse based on when claims were incurred (date of service) versus when they were paid (date processed).
Common Stop-Loss Contract Structures
| Contract Type | Coverage Period | Best For | Risk Consideration |
| 12/12 Contract | Claims incurred AND paid within the same 12-month policy period | Groups with fast claim processing and minimal lag | Late-arriving claims from policy year may not be covered |
| 12/15 Contract | Claims incurred in 12 months, paid within 15 months (3-month run-out) | Most employer groups—provides standard protection | Most common and recommended structure for stability |
| 15/12 Contract | 3-month run-in + 12 months coverage (claims incurred 3 months before policy start) | New self-funded plans or groups switching carriers | Protects against claims from transition period |
| Paid Contract | Any claims paid during policy period, regardless of when incurred | Groups with significant claim lag or complex processing | Can be more expensive but provides maximum flexibility |
Get Expert Analysis of Your Current Contract → | Call (631) 905-6555
Specific Stop-Loss: Protection Against Individual Catastrophic Claims
Specific stop-loss (spec) protects your business when a single employee generates extraordinarily high medical costs. For small to mid-sized employers, typical specific deductibles range from $30,000 to $100,000 per person per year.
High-Cost Claims That Trigger Specific Stop-Loss
Cancer Treatment
Premature Birth & NICU Care
Organ Transplants
Major Trauma & Accidents
Specialty Drug Therapies
Aggregate Stop-Loss: Protection Against Total Plan Claims
Aggregate stop-loss (agg) protects your business when your group’s combined claims exceed expected levels—even if no single individual reaches the specific deductible.
How Aggregate Attachment Points Are Calculated
Formula:
Aggregate Attachment Point = Agg Factor (PEPM) × Average Number of Employees × 12 Months
Real-World Calculation Example
Company Profile:
- Agg Factor: $500 PEPM (per employee per month)
- Average Employees: 100
- Contract Period: 12 months
Annual Aggregate Attachment Point:
$500 × 100 × 12 = $600,000
What This Means:
Once your group’s total claims exceed $600,000 for the plan year, your aggregate stop-loss carrier begins reimbursing you for additional claims.
Understanding Your Agg Factor (PEPM)
Your agg factor determines both your aggregate attachment point and, indirectly, your monthly funding requirements.
Get Your Agg Factor Analyzed by Experts → | Email dom.maggiore@memberlybenefits.com
Run-Out Protection: Don’t Let Late Claims Destroy Your Coverage
Run-out protection (also called “claim lag coverage”) allows additional time after your plan year ends for claims incurred during that year to be processed, submitted, and reimbursed by your stop-loss carrier.
Why Run-Out Protection Is Essential
The Problem: Medical claims often take weeks or months to be processed and paid after the date of service. Without run-out protection, claims incurred in December 2025 but paid in February 2026 might fall completely outside your 2025 stop-loss coverage.
The Solution: A 12/15 contract (12 months incurred, 15 months paid) includes a 3-month run-out window, ensuring late-arriving claims are still covered.
Why Stop-Loss Contract Details Impact Your Bottom Line
Understanding stop-loss mechanics isn’t just technical knowledge—these details directly affect your business’s financial health.
How Stop-Loss Terms Affect Your Business
Cash Flow Management
Monthly funding requirements are calculated using your agg factor. Higher factors = higher monthly funding needs, affecting working capital.
Financial Risk Exposure
Your specific deductible and aggregate attachment point determine maximum out-of-pocket exposure. Choosing wrong levels can create budget disasters.
Renewal Negotiations
After high-claim years, carriers may increase agg factors, add lasers, or raise specific deductibles dramatically. Understanding current terms helps you negotiate better renewal terms.
Budget Predictability
Proper stop-loss structure creates financial guardrails, allowing you to budget confidently knowing your maximum exposure is capped.
ROI on Self-Funding
Overpaying for unnecessary protection or being underinsured both destroy your self-funding savings. Optimal stop-loss design maximizes ROI.
Frequently Asked Questions About Stop-Loss Insurance
What happens if we have multiple employees with catastrophic claims in the same year?
This is precisely why you need both specific AND aggregate stop-loss coverage. Each individual claim that exceeds your specific deductible is reimbursed separately. Additionally, if multiple large claims cause your total group claims to exceed the aggregate attachment point, aggregate coverage provides additional reimbursement. The two coverage types work together to protect you from worst-case scenarios.
Can we change our specific deductible mid-year if we realize it’s too high?
No. Stop-loss contracts are annual agreements that cannot be modified mid-term. This is why selecting the appropriate specific deductible at renewal is critical. However, you can adjust your specific deductible at each annual renewal based on your experience and changing risk tolerance.
How do carriers calculate our agg factor?
Carriers consider multiple factors: your group’s demographics (age, gender, location), claims history, industry, plan design, and their own risk assessment models. Groups with older populations, previous high claims, or riskier industries receive higher agg factors. This is why having an experienced consultant negotiate your agg factor is valuable—they understand what factors should influence the calculation and when carriers are being overly conservative.
What’s the difference between specific stop-loss and individual stop-loss?
These terms are synonymous—they refer to the same coverage. “Specific stop-loss” and “individual stop-loss” both describe protection against large claims from single individuals, as opposed to aggregate stop-loss which protects against high total group claims.
Do we pay stop-loss premiums monthly or annually?
This varies by carrier and contract terms. Most stop-loss arrangements involve monthly premium payments, making budgeting easier. Some carriers offer annual payment with a discount. The payment schedule should be clearly specified in your stop-loss contract.
If our claims are low, do we get any stop-loss premium back?
Generally, no. Stop-loss insurance operates like traditional insurance—you pay premiums for protection whether or not you use it. However, the benefit of low claims in a self-funded plan is that you retain the surplus between your low actual claims and your expected claims (built into your agg factor). This surplus retention is the primary financial advantage of self-funding.
Stop-Loss Contract Review: Essential for Self-Funding Success
Whether you’re exploring self-funding for the first time or have been self-funded for years, understanding your stop-loss contract terms is non-negotiable. These provisions determine whether your self-funded plan protects your business or exposes you to catastrophic financial risk.
Take Control of Your Stop-Loss Coverage Today
Don’t navigate complex stop-loss contracts alone. Partner with experts who analyze stop-loss terms daily and know how to negotiate optimal protection at competitive prices.
Get Your Comprehensive Stop-Loss Analysis. Three ways to get started:
- Request Your Free Stop-Loss Review →
- Call Dom Maggiore: (631) 905-6555
- Email: dom.maggiore@memberlybenefits.com