COBRA Rate Calculator for Self-Funded Plans
Determine your COBRA premiums using the Past Cost Method (12-Month Actuarial Basis).
Calculated Results
*The final rate includes the legally permitted 2% administrative fee added to the applicable plan cost.
How to Calculate COBRA Rates for Self-Funded Plans
Unlike fully insured plans, where the COBRA rate is simply the insurance carrier's monthly premium plus a 2% fee, self-funded (self-insured) plans must calculate an "applicable premium" based on internal data. This requires a careful analysis of claims, administrative expenses, and actuarial projections.
The Two Permitted Calculation Methods
The Department of Labor (DOL) and the IRS allow two primary methods for self-funded plans to determine their COBRA rates:
- The Actuarial Method: An actuary calculates the projected cost of the plan for the upcoming period based on the demographics and health profile of the group.
- The Past Cost Method: The employer calculates the cost based on the total claims and administrative expenses paid during the previous 12-month period, adjusted for inflation (trend factors). This method cannot be used if there have been significant changes in the plan design or the population.
Formula Components
To use the Past Cost Method effectively, you must aggregate the following data points:
- Paid Claims: Every dollar paid by the plan for medical, dental, or vision services over the preceding year.
- Administrative Fees: Fees paid to Third-Party Administrators (TPAs), PPO network access fees, and utilization review costs.
- Stop-Loss Premiums: The cost of reinsurance for both specific (individual) and aggregate claims.
- Trend Factor: An adjustment for medical inflation. Because COBRA rates are set in advance for the "determination period," you must account for the fact that healthcare costs generally rise annually.
- The 2% Administrative Charge: Federal law allows employers to charge COBRA participants 102% of the plan's cost to cover the overhead of managing the continuation coverage.
Example Calculation
Imagine a company with 100 employees that paid $500,000 in claims last year. Their TPA and Stop-Loss fees totaled $5,000 per month ($60,000 annually). They estimate an 8% medical trend for the coming year.
Step 1: Total Past Cost. $500,000 (claims) + $60,000 (fixed costs) = $560,000.
Step 2: Apply Trend. $500,000 claims * 1.08 = $540,000 projected claims + $60,000 fixed costs = $600,000 total projected annual cost.
Step 3: Monthly Per-Employee Rate. $600,000 / 12 months / 100 employees = $500 per month.
Step 4: Final COBRA Rate. $500 * 1.02 = $510 per month.
Important Compliance Note
Self-funded employers must determine the COBRA rate before the beginning of the "determination period" (usually the plan year). Once the rate is set, it typically cannot be changed for 12 months. Failing to calculate these rates accurately or using an impermissible method can lead to excise taxes under the Internal Revenue Code.