Medicare 101: IRMAA, Gaps, and Gameplans

Medicare isn’t free, it isn’t simple, and if you don’t plan ahead, it’ll quietly drain your wallet.

What Medicare Covers — and What It Leaves Out

Most people assume Medicare will handle everything after 65. That’s a myth. Here’s what the core parts do—and don’t—cover:

  • Part A: Hospital insurance. Free if you’ve paid into the system, but you still pay deductibles and coinsurance.
  • Part B: Outpatient care and doctor visits. Comes with a monthly premium—and it’s where IRMAA hits hardest.
  • Part D: Prescription drugs. Separate policy. Costs vary, coverage isn’t automatic, and skipping it triggers penalties.
  • Medigap / Medicare Advantage: Optional add-ons. Medigap fills in the cracks. Advantage is a bundled HMO-style plan with restrictions.

What’s not covered: dental, vision, hearing aids, long-term care, overseas emergencies. Don’t assume—you’ve got to plug these holes yourself.

IRMAA: The Sneaky Premium That Punishes Success

IRMAA stands for Income-Related Monthly Adjustment Amount. Translation: if your income’s too high, you get slapped with higher Medicare premiums.

  • Starts at $103,000 (single) / $206,000 (married) in 2025
  • Applies to Part B and Part D premiums
  • Uses a two-year lookback — your 2023 income affects your 2025 Medicare costs

Sell a rental? Convert an IRA? Take a pension lump sum? You might accidentally trigger IRMAA and lock yourself into hundreds—or thousands—more per year.

How to Avoid or Reduce IRMAA

This isn’t guesswork. It’s strategy. Here’s how to stay under the radar (or minimize the damage):

  • Roth conversions—before age 65: Lower your future taxable income while you still have room to maneuver.
  • Delay Social Security: Gives you more years to do tax planning without stacking income on top of itself.
  • Control capital gains: Spread sales across years. Harvest tax losses. Use high-income years intentionally.
  • Take early IRA withdrawals: Pull small amounts in your early 60s to lower your RMD burden later.
  • Watch municipal bond income: Tax-free doesn’t mean IRMAA-free. It counts toward your MAGI.
  • Split big moves: Selling a business, land, or rental property? Divide the payout across tax years if you can.
  • Use SSA-44: Had a major life change (retirement, divorce, spouse passed)? File this form to challenge your IRMAA tier.

IRMAA isn’t just a tax—it’s a planning problem. A good strategy now can save you thousands later.

The Medicare Gaps That Wreck Budgets

Medicare isn’t built to protect against all risk. There are holes—and if you don’t cover them, you pay out-of-pocket:

  • No dental, vision, or hearing coverage: Unless you buy a separate policy or Advantage plan.
  • No long-term care: Medicare doesn’t cover assisted living, memory care, or nursing homes.
  • Weak drug protection: Part D plans vary. Some expensive meds still hit you hard.
  • No overseas coverage: Most international care isn’t covered at all.

One fall, one illness, one misstep—and suddenly “free” Medicare comes with a five-figure surprise bill.

How to Build a Medicare Gameplan

This isn’t one-size-fits-all. Build around your situation, not someone else’s assumptions:

  • Sign up 3 months before you turn 65: Delays = penalties. Miss the window, and you’ll pay extra for life.
  • Estimate your income 2 years in advance: Know when IRMAA might hit so you can plan around it.
  • Pick between Medigap and Advantage: Medigap offers flexibility; Advantage limits doctors but may be cheaper upfront.
  • Don’t skip Part D: Even if you’re not on meds yet. A $0 premium plan now avoids a costly penalty later.
  • Use your HSA wisely: If you have one, you can use it tax-free for premiums, copays, and other qualified costs.

Make your decisions with intent. Medicare doesn’t reward people who wing it.

Bottom Line

Medicare is a safety net—but only if you understand how it works. Otherwise, it becomes a leak in your retirement strategy.

  • Know the income rules before you convert, withdraw, or sell
  • Cover the gaps before they become real costs
  • Make your plan fit your life—not just your age

You only get one shot to set this up right. Handle it like the asset it is.