2025 Medicare Supplement Market Premium Grows 8.5%

CSG Actuarial has compiled information from the NAIC* and other sources and is reporting that total earned premiums in the Medicare Supplement market in 2025 totaled $41.9 billion, an 8.5% increase over 2024. 

A few other notes of interest: 

The total Medicare Supplement lives covered in 2025 increased 1.7% to 14.4 million.  CSG Actuarial believes this increase was due to the softening of competitive pressures from Medicare Advantage plans.

The 2025 Medicare Supplement overall market loss ratio increased slightly to 85.3%, as carriers continued to attempt to catch premium rate levels up to the post-Covid claim utilization rates.

Five of the top 10 Medicare Supplement carriers reported a decrease in in-force Medicare Supplement lives in 2025, as shown below.

*Data Source: National Association of Insurance Commissioners, by permission. The NAIC does not endorse any analysis or conclusions based upon the use of its data.