Medicare Supplement Plan G Average Premiums Continue Spike into 2026

Founded in 2007, CSG Actuarial is the leader in providing quoting and enrollment solutions to the Medicare marketplace.  Agents rely on CSG Actuarial for accurate information and have run over 140 million quotes on CSG’s quoting software since 2018.     

As noted in previous posts, Plan G average premiums have increased markedly in the past 2 1/2 years and that trend appears to be continuing into 2026.  The chart below shows the average Plan G premium rates by year for the five most competitive carriers as of each month.  The Plan G average premiums for the five most competitive carriers were flat around $1,400 for 2020 through early 2024 but have increased substantially the past 24 months and now average $1,850 as of 1/31/2026.