Medicare Planning Timeline: A Year-by-Year Guide from Age 60 to 65

Medicare doesn’t just arrive automatically at 65 — you have to plan for it, apply for it, and make a series of decisions that will affect your healthcare costs for the rest of retirement. And the decisions you make (or miss) in the years before 65 can cost you thousands of dollars in permanent late enrollment penalties. Here’s a year-by-year guide to Medicare planning starting at age 60.

Why Medicare planning starts before 65

Most people don’t think about Medicare until the year they turn 65. But several decisions made in your early 60s directly affect your Medicare options and costs:

• How you handle current health coverage affects your Medicare enrollment windows
• Your income in the two years before Medicare begins determines your Medicare Part B and D premiums (IRMAA)
• HSA contributions must stop six months before Medicare starts — mistiming this creates a tax problem
• If you retire before 65, you need to arrange bridge coverage — a gap many people underestimate

Starting the planning process at 60–62 gives you time to make good decisions instead of reactive ones.

Age 60–62: foundational research and income planning

These years are about understanding where you’ll stand, not taking action yet.

• Create your my Social Security account at ssa.gov/myaccount to review your projected Medicare eligibility and Social Security benefits. Most people who worked 10+ years in the U.S. qualify for premium-free Medicare Part A at 65.
• Understand how IRMAA works. Your Medicare Part B and Part D premiums in retirement are based on your modified adjusted gross income from two years prior. High income in your early 60s — including Roth conversions, large capital gains, or business income — will raise your Medicare premiums at 65. Plan accordingly.
• Estimate your retirement income. What will your income look like at 65 and beyond? The lower your income in the two years before Medicare begins, the lower your premiums will be. This is one of many reasons tax planning in your 60s matters.
• Understand your current plan. Know what type of employer coverage you have (COBRA eligibility period, whether it qualifies as “creditable coverage” for Medicare purposes) and what your COBRA cost would be if you retire early.

Age 63: evaluate coverage options and begin gap planning

At 63, Medicare is two years away. This is the time to get specific.

• Compare Medicare Supplement (Medigap) vs. Medicare Advantage options in your area. Medigap is medically underwritten in most states — if you have pre-existing conditions, your window to enroll without underwriting is the 6-month open enrollment period that begins when you first enroll in Part B at 65. Once that window closes, you may not be able to get Medigap at standard rates.
• Research Part D prescription drug plans. Review the plans available in your zip code and compare formularies (drug lists) against your current medications. Formularies change annually.
• Assess your HSA status. If you have an HSA-eligible high-deductible health plan, you can contribute until six months before your Medicare start date. Medicare Part A enrollment — even retroactively — triggers a six-month lookback that can make recent HSA contributions non-deductible and potentially penalized. If you plan to enroll in Medicare at 65, stop HSA contributions at 64½.
• Estimate your bridge coverage cost. If you plan to retire before 65, what will you pay for health insurance in the meantime? Options include employer COBRA, a spouse’s plan, ACA marketplace coverage, or part-time work with benefits. Budget for this explicitly — it’s often $500–$1,500/month for an individual.

Age 64: the action year (enrollment opens nine months early)

Your Initial Enrollment Period (IEP) for Medicare is a 7-month window: three months before the month you turn 65, your birthday month, and three months after. That means if you turn 65 in June, your IEP runs from March through September.

You can and should begin making decisions at 64 to be ready:

• Sign up for Medicare Part A (hospital insurance) at 64½ if you’ll be retiring at 65. Part A is free for most people and has no downside to enrolling. Exception: if you have an HSA, see the HSA timing note above.
• Decide whether to enroll in Part B. If you have employer coverage that qualifies as primary insurance (you or your spouse is still working at a company with 20+ employees), you may be able to delay Part B without penalty. If you won’t have other primary coverage, enroll in Part B during your IEP.
• Research Medicare Advantage plans vs. original Medicare + Medigap. Medicare Advantage (Part C) bundles hospital, medical, and often drug coverage into one plan, usually with lower premiums but more restrictive networks. Original Medicare + Medigap + Part D provides more flexibility and predictable out-of-pocket costs but higher premiums.
• Review your doctors’ network participation. If you choose Medicare Advantage, verify that your current doctors and specialists are in-network for the specific plan you’re considering — not just that they “accept Medicare.”
• Apply via ssa.gov or call SSA at 1-800-772-1213. Applications typically take 2–3 months to process. Apply 3 months before you want coverage to begin.

Age 65: Medicare begins — the decisions that stick

When you turn 65 (and have enrolled in Parts A and B), your coverage begins. Key decisions to finalize:

• Select a Part D prescription drug plan if you chose original Medicare. Don’t skip this even if you take no medications — the late enrollment penalty is 1% of the national base beneficiary premium per month you delay, and it’s permanent.
• Enroll in Medigap during your open enrollment window. This 6-month window starts when you are both age 65 and enrolled in Part B. During this window, no insurer can deny you coverage or charge more for pre-existing conditions. Once this window closes, switching Medigap plans may require medical underwriting.
• Confirm your IRMAA status. Medicare will notify you if your income triggers IRMAA surcharges. If you recently retired and your income has dropped significantly, you can request a reconsideration using SSA Form SSA-44, which allows the SSA to use more recent income data.
• Review your Medicare card and set up your Medicare.gov account. Your Medicare.gov account allows you to track claims, view your plan details, and compare options during future enrollment periods.

Annual enrollment: what to review every October–December

Medicare decisions aren’t permanent. Every year from October 15 through December 7 (Medicare’s Annual Enrollment Period), you can switch Part D plans or switch between original Medicare and Medicare Advantage.

Review every year:

• Has your Part D drug plan changed its formulary (drug list)? Are your medications still covered at the same tier?
• Have Medicare Advantage plan premiums, copays, or networks changed?
• Has your health status changed in a way that makes original Medicare + Medigap more cost-effective than Medicare Advantage?
• Are there new plans available in your area with better coverage at lower cost?

The Medicare Plan Finder at medicare.gov/plan-compare lets you enter your medications and compare Part D plans by total estimated annual cost — including premiums, copays, and deductibles. Running this comparison every year takes 20 minutes and can save hundreds of dollars annually.

Special situations that change the timeline

• Still working at 65 with employer coverage: You can delay Part B and Part D without penalty as long as you have creditable employer coverage. Enroll within 8 months of losing employer coverage to avoid late penalties.
• Retiring before 65: You’ll need bridge coverage. COBRA is expensive but preserves access to your current network. ACA marketplace coverage may be cheaper, especially with income-based subsidies. HSA contributions should stop 6 months before Medicare begins.
• TRICARE or VA coverage: Veterans and military retirees have different Medicare coordination rules. TRICARE generally requires Medicare enrollment to maintain TRICARE benefits. VA coverage and Medicare can coexist.
• Spouse still working: If your spouse has employer coverage that covers you, you may be able to delay your own Medicare enrollment. Confirm that the employer plan is primary before delaying.

Further Reading

• Medicare Parts A, B, C, and D Explained
• Medicare Enrollment Explained
• Medicare Costs and Premiums
• Medicare IRMAA Appeals: How to Use SSA-44
• The Bridge Years: Health Coverage Before Medicare
• HSA in Retirement
• Medicare Advantage vs. Original Medicare

This article is for general educational purposes only and does not constitute financial, tax, or legal advice. Consult a qualified financial advisor, tax professional, or attorney for guidance specific to your situation.