How Much Does Medicare Supplement Cost Per Month for Seniors? Actual Premiums by Plan and Age

Factors that raise or lower your premium

• Age: Attained-age rated plans increase as you get older. Issue-age plans lock your rate to the age you enrolled.
• Tobacco use: Smokers often pay 10–25% more.
• Zip code: Urban areas in NJ tend to be pricier than rural PA counties.
• Household discounts: Some carriers offer 5–7% off when both spouses enroll.
• Block rate increases: When your carrier's overall claims rise, everyone in that pool sees a hike. This is the increase most people don't see coming.

Sample rates from top carriers in NJ and PA

I can't publish exact carrier rates here since they shift quarterly. But I can tell you this: in NJ, I regularly see a $90/month difference between the cheapest and most expensive Plan G for the same 65-year-old in the same zip code.

The cheapest starting rate isn't always the best deal. Some carriers price low to attract new enrollees, then stack aggressive rate increases in years 3–5. I look at a carrier's 5- and 10-year rate history before recommending anything. Call and I'll show you the actual numbers.

Why the starting premium isn't the whole story

Most people focus entirely on what they'll pay at 65. But the real cost question is what you're paying at 72, 78, or 83.

When age increases and block increases stack together, 10–18% jumps in a single year aren't unusual. A plan that starts $30/month cheaper can end up costing you thousands more over a decade. I help clients compare long-term rate behavior, not just day-one sticker prices.

When to lock in your best rate

Your Medigap Open Enrollment Period lasts 6 months, starting the month you turn 65 and are enrolled in Part B. During this window, no carrier can charge you more or turn you down for health conditions.

If you're approaching 65, start shopping about 6 months before your Part B effective date. Miss the window and you may face medical underwriting, which can mean higher premiums or outright denial.

How to get a personalized quote in under 2 minutes

I'm Anthony Orner, a licensed Medicare broker in NJ. Give me your age, zip code, and which plan letter you're considering, and I'll pull real quotes from multiple carriers with their rate increase history. No cost, no obligation, and no pressure. Just numbers you can actually use.