How Each Model Affects Cost, Risk, Flexibility, and Long-Term Sustainability

Executive Summary

One of the most important—and most misunderstood—decisions an employer makes about their group benefits plan is how it’s funded.

Whether your plan is fully insured, administrative services only (ASO), pooled, or a hybrid of multiple models, your funding structure affects far more than just premiums. It determines:

  • Who takes on the financial risk
  • How renewals are calculated
  • How claims are managed
  • What you pay (and when)
  • How much flexibility you have to change

This article demystifies each model, breaks down the pros and cons, and helps you determine the optimal approach for your organization based on size, risk appetite, and plan maturity.

What Is a Funding Model?

Your funding model determines who pays for claims, who assumes the risk, and how your insurer is compensated.

It’s not just a technicality. The funding structure has massive implications for:

  • Premium stability vs volatility
  • Transparency and control over plan performance
  • Surplus/deficit ownership
  • Cost containment flexibility
  • Employer cash flow

Overview of the Four Primary Funding Models

Overview of the four primary funding models for insurance, detailing the model type, who holds the risk, and recommended group sizes.

Each model aligns differently with plan objectives, risk tolerance, and internal resources.

Fully Insured: Simplicity and Predictability

How It Works:

You pay a fixed monthly premium to the insurer. They take on all risk for claims, including high-cost outliers and trend changes.

Pros:

  • Budget certainty
  • Minimal internal administration
  • Good for small or high-variance groups
  • No cash flow concerns

Cons:

  • Insurers keep surpluses
  • Limited transparency on claims
  • Less incentive to manage cost drivers
  • Renewal increases may feel arbitrary

Best Fit: Employers with fewer than 100 employees or low tolerance for financial volatility.

Administrative Services Only (ASO): Control and Transparency

How It Works:

You pay claims as they’re incurred, plus a fixed admin fee. You keep any surplus—and absorb any deficit.

Pros:

  • Greater transparency and reporting
  • Opportunity to control costs
  • Surplus stays with employer
  • Better fit for stable, predictable plans

Cons:

  • Employer assumes financial risk
  • Claims volatility can impact budget
  • Cash flow must be managed closely
  • Typically requires stop-loss insurance

Best Fit: Mid-to-large employers with claims stability, cash flow flexibility, and strong analytics support.

Pooled Benefits: Sharing Risk Across the Market

How It Works:

Premiums are based on industry-wide or insurer-wide risk pools—not your specific group’s experience. Typically applies to:

  • Life Insurance
  • Accidental Death & Dismemberment (AD&D)
  • Long-Term Disability (LTD)
  • Critical Illness

Pros:

  • Predictable pricing
  • Group size less relevant
  • Protection from catastrophic risk
  • Administration is simple

Cons:

  • No reward for good experience
  • Limited leverage at renewal
  • Pooling charges can vary widely

Best Fit: Employers of all sizes, as pooled pricing is standard for certain benefit types.

Hybrid Funding: The Best of All Worlds?

Most plans in Canada use a hybrid funding structure, combining:

  • Insured for pooled benefits (life, LTD, CI)
  • ASO for health and dental
  • Stop-loss for high-cost claims under ASO

This approach balances risk, flexibility, and administrative efficiency.

Table outlining hybrid funding models for various benefit types including health, dental, life, LTD, CI, and HSA/WSA.

How Plan Size and Risk Appetite Influence Your Funding Choice

Table showing how group size and risk appetite influence funding recommendations for employee benefits. Includes categories for group sizes under 25 employees, 25-100 employees, 100-250 employees, and 250+ employees with corresponding recommended funding models.

Risk appetite also matters:

  • Conservative CFO? → Prefer insured.
  • Analytics-savvy HR leader? → Open to ASO.
  • CFO with strong reserves? → Explore full ASO or captive.

Transitioning from Insured to ASO (or Vice Versa)

Moving to ASO:

  • Needs 12–24 months of claims data
  • Requires stop-loss insurance
  • Set internal processes for weekly claims funding

Moving back to insured:

  • May result in rate shock if experience is poor
  • Used after major claims volatility or cash flow strain

Tip: Transitions often make sense after a market canvas or pricing negotiation.

Stop-Loss Insurance: A Safety Net for ASO Plans

Stop-loss protects you from catastrophic claims.

Table explaining stop-loss insurance types: Individual Stop-Loss (ISL) and Aggregate Stop-Loss, including thresholds and claims percentages.

Thresholds matter. Higher thresholds = lower premiums, but more exposure.

Rule of Thumb: ISL is essential for any ASO plan over 50 lives.

Funding Model and Renewal Calculations

Fully Insured:

Renewal is based on:

  • Prior claims experience
  • Trend/inflation assumptions (8–12%)
  • Pooling charges and broker commissions

ASO:

No “renewal” per se—but your:

  • Admin fees
  • Stop-loss rates
  • Claims projections

…are all reviewed annually.

Pro Tip: Request quarterly reporting to avoid surprises and stay proactive.

Hidden Costs and Common Pitfalls

  • Pooling charges on small claims
  • Trend assumptions baked into projections
  • Unused surpluses forfeited under insured models
  • Lack of stop-loss coverage in ASO leading to financial risk
  • Poorly designed ASO contracts that blur the line between insured and self-funded

Always request a full financial breakdown—including manual rates, admin fees, trend assumptions, and broker compensation.

Final Thoughts

Your funding model is the foundation of your benefits plan. Get it wrong, and you’ll overpay, lose leverage, and carry unnecessary risk. Get it right, and you’ll unlock transparency, control, and long-term sustainability.

Whether you’re fully insured, partially ASO, or operating a hybrid structure, your model should reflect your:

  • Organizational goals
  • Risk appetite
  • Financial reserves
  • Plan maturity

Still unsure if your current model is the best fit? We’re happy to run a side-by-side comparison to help you decide—with no commitment required.