COBRA-to-Medicare Bridge Cost Calculator

Designing executive retirement and severance packages that align with Medicare enrollment timelines.

Advising high-net-worth clients on minimizing lifetime Medicare premium surcharges and avoiding coverage gaps.

Conducting corporate cost-benefit analyses for early retirement incentive programs.

Evaluating small business health plan primary vs. secondary payer liabilities for employees over 65.

How does COBRA compare financially to Medicare for a retiring executive?

COBRA requires paying 102% of the total group premium, which is almost always higher than a private Medicare portfolio. For most retiring executives, transitioning to Medicare Part B, Part D, and a Medigap plan reduces monthly healthcare costs by 40% to 60% while maintaining comparable or superior coverage networks. This serves as a vital cost-containment strategy during retirement transition planning.

Can a business subsidize COBRA premiums as part of a severance package without affecting Medicare eligibility?

Yes, employers often subsidize COBRA premiums in severance agreements. However, these subsidized premiums do not extend the Medicare Special Enrollment Period (SEP). The retiree must still enroll in Medicare Part B within 8 months of active employment termination to avoid lifetime late penalties, regardless of how long the employer pays for COBRA.

Does the loss of COBRA coverage trigger a Medicare Special Enrollment Period?

No, this is a critical regulatory trap. The termination of COBRA coverage does not qualify as a life event that triggers a Medicare Special Enrollment Period (SEP). Only the loss of active, current employment-based group coverage triggers an SEP, meaning relying on COBRA past the initial 8-month window can leave you stranded without an enrollment pathway.

How do high-income surcharges (IRMAA) impact the COBRA vs. Medicare cost comparison?

High-income retirees are subject to IRMAA surcharges, which increase Medicare Part B and Part D premiums based on tax returns from two years prior. Even with these surcharges factored in, a comprehensive Medicare plan is generally more cost-effective than paying the fully loaded, non-subsidized COBRA premiums of enterprise-level group plans. Additionally, retired executives can often appeal these surcharges if their income has dropped significantly.

Can an individual maintain COBRA and Medicare simultaneously to maximize coverage?

While legally permissible, maintaining both is rarely financially optimal because coordination of benefits rules apply. Medicare acts as the primary payer, and COBRA becomes secondary, meaning you are paying double premiums for highly redundant coverage. This setup is typically only used as a very brief, high-cost safety net during complex medical transitions.

What is the financial risk of missing the Medicare enrollment window while on COBRA?

Missing the enrollment window results in a permanent 10% surcharge on Part B premiums for every 12-month period you were eligible but unenrolled. Additionally, you may face a multi-month coverage gap because you can only enroll during the General Enrollment Period (January 1 to March 31). This gap can expose you to complete financial liability for any medical emergencies that occur in the interim.

How should a business owner analyze the transition for their own retirement?

Business owners should use this calculator to evaluate whether to transition immediately to Medicare at 65 or continue under their company's group plan. If the group plan has fewer than 20 employees, Medicare automatically becomes primary at age 65, making immediate enrollment mandatory to avoid unpaid claims. This analysis protects both personal wealth and corporate cash flow.