Medicare 2026

Part D Drug Costs in Columbus: The $2,100 Cap Explained

For older adults in Columbus weighing when to sign up for Medicare, one of the costliest mistakes has nothing to do with picking a plan — it's missing an enrollment window. Part B and Part D both carry late-enrollment penalties that can follow you for the rest of your life, and they are easier to avoid than to fix.

Columbus is in Muscogee County, where residents have access to Original Medicare plus a range of private Medicare Advantage and Part D drug plans. But no matter which path you choose, the enrollment rules — and the penalties for missing them — come straight from Medicare itself.

When you first become eligible

Most people become eligible for Medicare at age 65. Your Initial Enrollment Period is a 7-month window: the three months before the month you turn 65, the month itself, and the three months after. Signing up during this window is the simplest way to avoid any late penalty at all.

If you're already getting Social Security benefits, you're usually enrolled in Part A and Part B automatically. Everyone else has to actively sign up through the Social Security Administration.

How the Part B late penalty works

If you don't sign up for Part B when you're first eligible — and you don't qualify for a Special Enrollment Period — you may owe a permanent penalty when you finally do enroll.

The Part B penalty adds 10% to your monthly premium for each full 12-month period you were eligible but not enrolled. So if you waited three full years, your premium could be 30% higher — and you'll usually keep paying that extra amount every month for as long as you have Part B.

You can generally sign up during the General Enrollment Period, January 1 through March 31 each year, with coverage starting the month after you enroll.

How the Part D late penalty works

Part D covers prescription drugs, and it has its own late-enrollment penalty. The rule: if you go 63 days or more in a row without "creditable" drug coverage after your Initial Enrollment Period ends, you may owe a penalty when you finally join a Part D plan.

The math works like this: Medicare multiplies 1% of the "national base beneficiary premium" by the number of full months you went without creditable coverage, then rounds to the nearest 10 cents. That amount is added to your monthly Part D premium — again, typically for as long as you have Part D coverage.

"Creditable coverage" is drug coverage that Medicare considers at least as good as standard Part D. Employer plans, union plans, TRICARE, and VA benefits often qualify. Your plan should send you a notice each year telling you whether your coverage is creditable — keep those notices.

Special Enrollment Periods can protect you

If you kept working past 65 and had health insurance through your job (or your spouse's job), you likely qualify for a Special Enrollment Period when that coverage ends. You generally have 8 months to sign up for Part B without a penalty, and 63 days to join a Part D plan.

COBRA and retiree coverage do not count as active employer coverage for the Part B SEP. This trips up a lot of people, so it's worth confirming with Social Security or a counselor before you rely on it.

Other Part D facts worth knowing for 2027

Even after you enroll, a few Part D numbers are helpful to keep in mind:

• Part D out-of-pocket costs for covered drugs are capped at $2,100 in 2026 and $2,400 in 2027.
• The maximum Part D deductible is $615 in 2026 and $700 in 2027.
• The old "donut hole" coverage gap is gone; Part D now has three phases.
• The Medicare Prescription Payment Plan lets you spread drug costs across the calendar year in monthly amounts instead of paying at the pharmacy counter.
• Higher-income beneficiaries pay IRMAA surcharges, which begin above $109,000 in income for a single filer in 2026.

Mark your calendar for the Annual Enrollment Period, October 15 through December 7, and the Medicare Advantage Open Enrollment Period, January 1 through March 31.

Where to get personal help

Penalty rules can feel technical, and one wrong assumption — especially around COBRA or retiree coverage — can cost you every month for years. Free, unbiased help is available.

• Visit medicare.gov to review enrollment periods and creditable coverage rules.
• Call 1-800-MEDICARE (1-800-633-4227) with specific questions.
• Contact the Georgia SHIP (GeorgiaCares) for free one-on-one counseling from trained volunteers.