Is Medicare Part A mandatory?

Declining Medicare Part B at age 65 means you will not have medical insurance for doctor visits or outpatient care, and you may face a permanent late-enrollment penalty unless you have qualifying active employer coverage.

💡 What Happens Based on Your Coverage

• ✅ With Active Employer Coverage:
  • No penalty if your employer has 20+ employees.
  • You get an 8-month window to sign up later without penalties when you retire.
• ⚠️ Without Qualifying Coverage (Uninsured, Marketplace, COBRA):
  • You get a permanent 10% premium penalty for each full year you delay.
  • You must pay this higher monthly cost for as long as you have Part B.
  • You have to wait for the General Enrollment Period (January 1–March 31) to sign up, leaving gaps in care.

📊 Penalty Breakdown Example

Assuming a standard monthly Part B baseline cost of around $185:

• 1-Year Delay: Extra $18.50 added to your monthly bill for life.
• 3-Year Delay: Extra $55.50 added to your monthly bill for life.

🗒 How to Decline Part B Correctly

• If automated (taking Social Security): Wait for your red, white, and blue Medicare card, then follow the instructions on the back to sign and return it declining Part B.
• If manual (not taking Social Security): Simply choose to enroll in Part A only and decline Part B during your online application via the Social Security Administration.

The single biggest and most costly mistake people make with Medicare is missing enrollment deadlines, leading to permanent late-enrollment penalties and gaps in coverage.

Missing Enrollment Deadlines

• Initial Enrollment Period (IEP): This window lasts for seven months. It starts three months before the month you turn 65, includes your birthday month, and ends three months after.
• Late Penalties: Failing to sign up for Part B or Part D on time can trigger permanent monthly or yearly financial penalties added to your premiums.
• Delayed Enrollment Confusion: Many people wrongly assume they can delay Medicare past age 65 just because they have health coverage like COBRA, a marketplace plan, or small-employer insurance.

Other Costly Medicare Mistakes

• Ignoring Annual Changes: Sticking with automatic renewal without reading the Annual Notice of Change (ANOC) can result in unexpected costs, as drug lists and doctor networks shift every year.
• Choosing Solely by Low Premiums: Picking a plan based only on a low monthly cost while ignoring total out-of-pocket expenses like deductibles, copays, and coinsurance.
• Missing the Medigap Window: Forgetting to apply for a Medigap (Medicare Supplement) policy during your open enrollment window. After this six-month period, insurers can use medical underwriting to charge more or deny coverage.
• Skipping Financial Assistance: Overlooking programs like Medicare Savings Programs or Part D Extra Help that assist with out-of-pocket medical and prescription expenses.

You can cancel or disenroll from Medicare Part A only if you pay a monthly premium for it, which you can do by submitting Form CMS-1763 to the Social Security Administration. If you have premium-free Part A (the case for most people), you cannot voluntarily cancel it by law.

Eligibility to Cancel

• Premium-free Part A: Cannot be dropped or canceled under any circumstances.
• Premium Part A: Can be canceled at any time if you pay for your hospital insurance.

Steps to Cancel Premium Part A

1. Get the Form: Download and print Form CMS-1763 (Request for Termination of Premium Hospital and Medical Insurance).
2. Complete the Form: Fill out your personal details, your Medicare number, and state your reason for ending the hospital insurance coverage.
3. Submit to Social Security: Mail, fax, or hand-deliver the completed form to your local Social Security office. You can also call Social Security at 1-800-772-1213 (TTY 1-800-325-0778) for assistance or to schedule an appointment.
4. Timeline: Your coverage officially ends on the last day of the month after the month you submit your request.

If you only have Medicare Part A, you are only covered for inpatient hospital stays, skilled nursing care, hospice, and limited home health services. You will have no coverage for outpatient doctor visits, preventive care, or prescription drugs.

What is Covered

• Inpatient care: Hospital stays (subject to the Part A deductible of $1,736 per benefit period in 2026).
• Facilities: Skilled nursing facility care (limited days) and hospice care.

What is NOT Covered

• Doctor visits: Regular visits to your primary care doctor or specialists (Part B).
• Outpatient services: Tests, lab work, or surgeries done without an overnight hospital stay (Part B).
• Prescription drugs: Medications you take at home (requires Part D).
• Routine extras: Dental, vision, or hearing care.

Risks and Penalties

• Paying out of pocket: You must pay 100% of the cost for doctor visits, tests, and medical equipment out of your own pocket.
• Late enrollment penalties: If you have to pay a premium for Part B or Part D and delay signing up, you may face permanent monthly late penalties when you finally enroll.

Someone usually declines or delays Medicare Part B to avoid paying monthly out-of-pocket premiums when they already have active health insurance from a job.

Main Reasons to Decline Part B

• Active work insurance: You or your spouse are still working and have health coverage from an employer with 20 or more employees.
• Saving money: You do not want to pay the standard monthly Part B premium (which exceeds $185) while your current job plan already covers your medical bills as the primary payer.
• High-income surcharges: Individuals with high incomes face an extra fee called IRMAA (Income-Related Monthly Adjustment Amount), making Part B much more expensive. You can review more on high-income scenarios through the Checkbook Guide.

Important Risks to Know

• Lifelong penalties: If you decline Part B without qualifying active employment coverage, you will face a permanent late-enrollment penalty when you finally sign up.
• Inadequate coverage types: COBRA, retiree health plans, and individual marketplace plans do not count as active employment coverage. You cannot safely delay Part B using these plans.
• For further details on eligibility rules and exceptions, check American Entitlements.