Free 2026 tool
Estimate Your Medicare Part B Late Penalty
Type in how many months you have put off Part B, or expect to, and see what the late penalty would add to your premium at the 2026 rate.
How Much Would A Part B Late Penalty Cost You?
Missing your Initial Enrollment Period triggers a permanent Part B late enrollment penalty. The penalty is 10% of the standard premium for every full 12 months you delayed, added to your premium for life. See what it could cost.
The penalty applies for as long as you have Part B. The 20-year estimate assumes the 2026 premium; actual premiums rise most years, so the real lifetime cost is likely higher.
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A licensed agent will call you back within one business day. If it is after hours, the next business morning. No obligation.
Or call now: (316) 374-2353The result is what Social Security would tack onto your Part B premium each month. It is not a single fine, and it does not expire. Below you will find the rule the calculator follows, the same math at four sample delays, and the situations where no penalty applies at all. If your months do not fit neatly into any of it, Medicare help in Wichita is a free phone call, and a licensed agent can look at your dates with you.
How The Part B Penalty Works
Social Security adds a late penalty when Part B starts after your Initial Enrollment Period ends and nothing creditable covered the months between. Three facts set the amount.
- Each full 12 months you could have had Part B, without qualifying coverage from current work, adds 10 percent of the standard premium.
- That amount rides on your bill every month you keep Part B.
- At $202.90, the standard monthly premium for 2026, each 10 percent step costs $20.29 a month right now.
Only whole years count. Eleven months late adds nothing. Twelve adds 10 percent. Twenty-three months still adds only 10 percent, because the second year is not complete.
The count begins when your Initial Enrollment Period ends, not on your birthday. Months on a group plan through your own or your spouse's current job at an employer with 20 or more workers do not count against you. That is common in Wichita, where plenty of people keep working past 65 in aviation, health care and manufacturing. Getting the start date right is what the Turning 65 guide is for, and it walks the seven months in order.
Worked Examples At The 2026 Premium
Every number below starts from the $202.90 standard premium for 2026. Find your delay on the left. The rest of the row shows what the penalty stacks on top of the premium every enrollee pays.
| Months late | Surcharge | Extra each month | Extra each year | Over 20 years |
|---|---|---|---|---|
| 18 months | 10 percent | $20.29 | $243.48 | $4,870 |
| 30 months | 20 percent | $40.58 | $486.96 | $9,739 |
| 48 months | 40 percent | $81.16 | $973.92 | $19,478 |
| 72 months | 60 percent | $121.74 | $1,460.88 | $29,218 |
Partial years drop off. Eighteen months holds one full 12-month period, so that row carries 10 percent, not 15. Treat the 20-year column as a minimum. It assumes the premium never moves past 2026, yet it has risen in most recent years. Because the penalty is a percentage, it goes up right along with it.
Hold the middle rows up against a fixed retirement income and the numbers get real fast. A two-year delay means $40.58 more every month, for as long as you keep the coverage. To see where Part B sits next to the other choices, the Medicare in Wichita overview covers Parts A, B, C and D one at a time.
How To Avoid The Penalty
The first three panels below keep you clear of the penalty. The last one names coverage that seems like it should protect you and does not.
Putting off Part B leads the list of Medicare mistakes to avoid. The other six share its pattern: a date passes quietly and the bill shows up years later.
A calculator result is not the final word. A licensed agent can check whether one of these exceptions covers your months.
Call us (316) 374-2353 Request a callPart B Penalty Questions
How does Social Security work out the penalty?
Social Security counts the months from the end of your Initial Enrollment Period to the month Part B begins, skips any months covered by qualifying work coverage, and drops leftover months that do not make a full year. Each whole year adds 10 percent. Thirty-five months late is two whole years, so 20 percent.
Does the Part B surcharge ever go away?
As long as you have Part B, which for nearly everyone is for life. The percentage is fixed when you enroll, but the dollar amount is not: it is recalculated each January against that year's standard premium, so it climbs when the premium climbs.
Which coverage lets me delay Part B safely?
Group health coverage based on current employment, yours or your spouse's, at an employer with 20 or more workers. Coverage you hold because a job ended does not qualify, so COBRA and retiree plans fail the test even though they pay claims.
Can I get a Part B penalty taken off?
In some cases. If a work plan covered the months, the employer fills out form CMS-L564 and Social Security can drop the penalty. If a federal employee gave you bad information and you relied on it, ask about equitable relief. A licensed agent can help sort out which path fits your months.
Does drug coverage carry its own late penalty?
Yes, and it runs on its own rules. It kicks in after 63 or more days in a row without creditable drug coverage. Each full uncovered month after your Initial Enrollment Period adds 1 percent of a national benchmark premium, and that charge also lasts for life. A person can owe both.
What about putting off Part A?
Not for most people. If you or a spouse paid Medicare taxes for 40 quarters, Part A is premium-free and carries no late penalty. If you have to buy Part A, a 10 percent surcharge can apply for twice as many years as you waited.
Unsure whether the penalty applies to you?
We can check your dates against the exceptions, at no charge.
Call (316) 374-2353 Or request a callback