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    Missed Your Medicare Enrollment Deadline? Here Is What Happens Next

    Missing a Medicare enrollment deadline is fixable, and at Goulson Insurance Services we walk people through the repair every week. Here is the direct answer. If you delayed Part B, your monthly premium may rise 10 percent for each full 12 month period you could have had Part B but did not sign up, and you generally keep paying that penalty for as long as you have Part B. If you went without creditable drug coverage, the Part D penalty adds 1 percent of the national base beneficiary premium for every month you waited. The escape hatches are just as concrete. The General Enrollment Period runs January 1 through March 31, with coverage starting the month after you sign up. And if you left employer coverage, a Special Enrollment Period may let you enroll with no penalty at all. Our independent agents in Los Angeles figure out which window fits your situation at no cost to you, in English, Spanish, and Hebrew. Below is what happened, what it costs, and the fastest route back to coverage.

    Reviewed by Lara Goulson, licensed insurance agent, Goulson Insurance Services.

    (818) 472-5484

    Lara Goulson, Licensed Insurance Agent, CA License #0E69969, NPN 8407942

    What the late enrollment penalties actually cost

    The Part B late enrollment penalty adds 10 percent to your monthly premium for each full 12 month period you could have had Part B but did not sign up. Wait two full years and the standard premium rises 20 percent, and Medicare says most people pay that surcharge for as long as they have Part B. Part A has its own penalty for people who must buy it: 10 percent on a 2026 premium of $311 or $565, for twice the number of years you delayed. The Part D penalty applies only after 63 or more days in a row without Part D or other creditable drug coverage, and it then runs at 1 percent of the national base beneficiary premium, $38.99 in 2026 and $41.33 in 2027 per the CMS announcement of July 28, 2026, for each full uncovered month, rounded to the nearest 10 cents, for as long as you have Medicare drug coverage. Three escapes matter: signing up before a first full 12 month period passes, a Special Enrollment Period, and, Medicare.gov adds, a Medicare Savings Program for Part B or Extra Help for Part D. An agent can run the math for you in minutes.

    The General Enrollment Period: January 1 through March 31

    If you missed your Initial Enrollment Period and no Special Enrollment Period applies, the General Enrollment Period is your standing appointment: it runs January 1 through March 31 every year, and your coverage starts the month after you sign up. Enroll in February and Part B begins March 1. Enroll on March 31 and it begins April 1. That timing matters for planning, because any months you spend waiting for the window keep accumulating toward the full 12 month periods behind the Part B penalty, and they count as full uncovered months toward the Part D penalty only where you have gone 63 or more days in a row without creditable drug coverage, and you may need short term arrangements for doctor visits or prescriptions in the meantime. The practical move is to mark the window now, gather your Social Security login and employment records before January, and file early in the window rather than at the deadline. A Los Angeles reader and a reader in Texas follow the same federal calendar here; the dates do not change by state.

    Special Enrollment Periods can erase the penalty

    If you or your spouse kept working past 65 and you had group health coverage through that job, you get a Special Enrollment Period: 8 months to sign up for Part B, starting when the employment or the coverage ends, whichever comes first. Enroll inside that window and the late penalty does not apply, with coverage generally starting the month after you sign up. One trap catches many people: COBRA does not extend the clock. Medicare.gov is blunt that the 8 month period starts when you stop working, even if you elect COBRA, so waiting for COBRA to run out can strand you. Other Special Enrollment Periods exist too, including one after release from incarceration and others for exceptional circumstances Medicare recognizes. If any life change preceded your missed deadline, it is worth checking before you assume you owe a penalty; this is precisely the eligibility puzzle an experienced agent solves quickly.

    How a Los Angeles agent helps you pick the right window, free

    Figuring out which escape hatch fits is exactly what an independent agent does, and the help costs you nothing: carriers pay licensed agents, and that compensation is regulated by Medicare, so your premium is the same either way. Goulson Insurance Services is a family agency with Los Angeles offices in Century City, where Lara Goulson answers at (818) 472-5484, and Valley Village, where Jordan Goulson answers at (818) 731-5417. We work in English, Spanish, and Hebrew, and we are licensed in California, Nevada, Texas, Arizona, Florida, Hawaii, Idaho, Arkansas, Colorado, Michigan, and New York, so a phone call works from most of the country. We confirm whether a Special Enrollment Period applies, time your General Enrollment Period filing, and estimate any penalty before it surprises you. We are not affiliated with Medicare or any government agency, and we do not offer every plan available in your area; Medicare.gov or 1-800-MEDICARE list all options.

    What the penalty adds to your bill in 2026, in dollars

    Medicare publishes the arithmetic, so you can price your own delay before you file. For Part B, start with the 2026 standard premium of $202.90 and add 10 percent of it for each full 12 month period you could have had Part B but did not sign up. Medicare.gov finishes the two year sum itself: $202.90 plus the $40.58 that a 20 percent penalty adds comes to $243.48, which Medicare.gov states as a Part B monthly premium of $243.50 for 2026, and the penalty alone is $486.96 across a year. One full period instead of two costs $20.29 a month. For Part D, multiply 1 percent by the 2026 national base beneficiary premium of $38.99, then by your number of full uncovered months, and round to the nearest 10 cents. Medicare.gov works that one too: 14 uncovered months is 14 percent of $38.99, or $5.50 a month. Against the 2027 base premium of $41.33, the same 14 months come to $5.79, which rounds to $5.80 a month. The percentage is fixed, but Medicare recalculates the dollar amount each year against that year's premiums. Lara Goulson can count your months with you.

    A missed window is usually fixable

    Most people who miss an enrollment deadline still have a path, and the sooner you look the cheaper it is. Penalties grow with time, so the worst move is waiting to find out.

    Missed a deadline? Call (818) 472-5484 and we will find the window that still applies to you.

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    Missed Deadline Questions

    The penalty is 10 percent of the Part B premium for each full 12 month period you could have had Part B but did not sign up, and it is added to your monthly bill, not charged once. Medicare.gov notes that for most people it lasts as long as they have Part B, which usually means for life. Two full years of delay means a 20 percent surcharge on the standard premium, which is $202.90 per month in 2026, so the penalty in that example adds $40.58 every month. Partial years matter too: only full 12 month periods count, so signing up before the first full period passes means no penalty at all. If a Special Enrollment Period covers your gap, the penalty disappears entirely, which is why checking eligibility before you pay is worth ten minutes.

    A penalty applies only after 63 or more days in a row without Part D or other creditable drug coverage. Medicare then multiplies 1 percent of the national base beneficiary premium by the number of full, uncovered months and rounds to the nearest 10 cents. That premium is $38.99 in 2026 and $41.33 in 2027, so the dollar penalty changes each year even though the percentage does not. Fourteen uncovered months, for example, produce a 14 percent addition that Medicare.gov puts at $5.50 a month in 2026, and about $5.80 a month in 2027. Medicare.gov states the penalty sticks for as long as you have Medicare drug coverage, even if you switch plans. Creditable coverage means drug coverage Medicare considers at least as good as its standard benefit, which many employer and union plans meet. Keep any creditable coverage notice your plan mails you; it is the proof that stops those months from counting.

    The General Enrollment Period runs January 1 through March 31 every year, and coverage starts the month after you sign up, so filing in January means February coverage while filing in late March means April coverage. Before defaulting to that window, check whether a Special Enrollment Period applies, because those allow enrollment outside the calendar window and often without penalty. The most common one covers people leaving job based group coverage, who get 8 months from the end of employment or the coverage to sign up for Part B. Medicare also recognizes other qualifying situations, such as release from incarceration. If nothing fits, the General Enrollment Period is the reliable fallback: it comes every year, no special qualification is needed, and Social Security processes the signup. The cost of waiting is the penalty clock, so the practical rule is simple: take the earliest window you qualify for.

    Probably not, if you act within the window. Coverage through your or your spouse's current employer generally lets you delay Part B, and when that employment or coverage ends you get an 8 month Special Enrollment Period to sign up without a late penalty. Coverage typically starts the month after Social Security receives your completed forms. The dangerous detail is COBRA: Medicare.gov warns that COBRA does not extend your time to enroll, because the 8 month clock starts when you stop working even if you elect COBRA afterward. So a person who takes 18 months of COBRA and then applies for Part B has missed the Special Enrollment Period and may face both a wait and a penalty. You will typically need documentation of your employer coverage when you apply. Gather it early, and count your 8 months from the day the job ended, not the day COBRA ends.

    Yes. Licensed agents are paid by insurance carriers, and Medicare regulates that compensation, so you pay nothing for our help and your premium is the same whether you enroll through an agent or alone. For a missed deadline, the work looks like this: we listen to what happened, check whether any Special Enrollment Period fits your history, map the General Enrollment Period timing if it does not, and estimate any Part B or Part D penalty so there are no surprises. Goulson Insurance Services is independent and family run, with Century City and Valley Village offices in Los Angeles, service in English, Spanish, and Hebrew, and licenses in eleven states including California, Nevada, Texas, Arizona, and Florida. We are not affiliated with Medicare or any government agency, and we do not offer every plan available in your area; Medicare.gov or 1-800-MEDICARE list all options.

    Sometimes. For Part D the review is called a reconsideration. In the CMS tip sheet on the Part D late enrollment penalty, your plan sends the list of reasons and a form, and you must mail or fax it to the Medicare contractor within 60 days from the date on the letter announcing the penalty. Decisions generally come within 90 days, plus up to 14 more for good cause, and you must keep paying the penalty while you wait because federal law treats it as part of your premium. If the contractor finds it wrong, your plan removes or lowers it and explains any refund. For Part B, Social Security can grant equitable relief when a federal employee's error, misinformation, or inaction caused the delay.

    Probably not. In the CMS tip sheet on the Part D late enrollment penalty, a penalty is charged only if you go 63 or more days in a row without Part D or other creditable drug coverage after your Initial Enrollment Period. CMS answers the one month case directly: since that person had only one month without creditable coverage, they would not pay a penalty. Once the 63 day threshold is crossed, Medicare counts full uncovered months rather than partial ones, at 1 percent of $38.99 each in 2026 and of $41.33 each in 2027. Keep the creditable coverage notice your employer or union plan mails you, because that is the proof that stops those months from counting.

    Only for people who have to buy Part A, meaning fewer than 40 quarters of Medicare taxed work by you or your spouse. Most people get Part A premium free and owe nothing here. If you must buy it, Medicare.gov says the monthly premium may go up 10 percent and that you pay the penalty for twice the number of years you did not sign up, so a two year delay means four years of the higher premium. The 2026 Part A premium is either $311 or $565 a month depending on your work history, so a 10 percent penalty adds $31.10 or $56.50 a month. Medicare.gov adds that you usually will not pay this penalty if you qualify to sign up for Part A during a Special Enrollment Period.

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    We do not offer every plan available in your area. Currently we represent 18 organizations which offer 233 products in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options. Not connected with or endorsed by the United States Government or the federal Medicare program. This website is a solicitation for insurance. Goulson Insurance Services Inc., CA Business Entity License #6020069. Lara Goulson, CA License #0E69969, NPN 8407942.

    We do not offer every plan available in your area. Currently we represent 18 organizations which offer 233 products in your area. Please contact Medicare.gov or 1-800-MEDICARE to get information on all of your options. Goulson Insurance Services is not affiliated with or endorsed by Medicare or any government agency.

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