Quick answer
The 2026 national benchmark Marketplace plan for a 64-year-old runs about $1,467 a month before any tax credit, exactly three times the price at 21, since the federal age curve tops out at 64. With a premium tax credit, someone earning $40,000 would still pay around $289 a month for that plan in 2027; earn just over 400% of the poverty level and the bill jumps to the full $1,467. One year later, at 65, Medicare eligibility usually replaces this math entirely.
Key takeaways
- A 64-year-old’s 2026 benchmark plan averages about $1,467 a month nationally, the highest price on the federal age curve, exactly three times the 21-year-old rate.
- Crossing 400% of the poverty level costs a 64-year-old about $923 a month in lost tax credit, the largest dollar jump of any age.
- Medicare eligibility generally starts at 65, with a seven-month Initial Enrollment Period built around your birthday month.
- Signing up for Medicare in the three months before your birthday month starts coverage that same birthday month; signing up later delays it.
- The 2026 Medicare Part B premium is $202.90 a month, and the Medicare trustees project about $209.50 for 2027.
On this page
What a 64-year-old pays before subsidies
The federal age curve reaches its highest point at 64, exactly three times the rate charged at 21. Scaling KFF’s 2026 national benchmark premium ($625 a month for a 40-year-old) up to age 64 puts the benchmark silver plan at about $1,467 a month before any tax credit.
| Age | Full-price benchmark plan, per month (2026 estimate) |
|---|---|
| 21 | $489 |
| 40 | $625 |
| 50 | $873 |
| 60 | $1,327 |
| 64 | $1,467 |
What you’d pay after a premium tax credit for 2027
Because 64 carries the highest full price on the curve, it also produces the biggest possible swing between a subsidized payment and the full bill.
| Yearly income | % of poverty level | What you’d pay per month |
|---|---|---|
| $25,000 | 157% | $96 |
| $40,000 | 251% | $289 |
| $60,000 | 376% | $511 |
| $70,000 | 439% | $1,467 |
Going from $60,000 to $70,000 in income adds about $956 a month, over $11,400 a year, to the bill once you clear 400% of the poverty level, about $63,840 for one person in 2027. That’s the largest version of this cliff at any age, simply because 64’s starting price is the highest. See how to lower your Marketplace premium for ways to manage income near that line for your last year or so before Medicare.
Getting ready for Medicare at 65
Medicare eligibility generally starts at 65, or earlier after 24 months of Social Security disability benefits, or with ALS or kidney failure. Your Initial Enrollment Period runs seven months: the three months before your birthday month, your birthday month itself, and the three months after. Sign up in the three months before your birthday month and coverage starts that same birthday month; sign up in your birthday month or later and coverage starts the first of the month after you enroll instead. The 2026 Medicare Part B premium is $202.90 a month, and it’s projected to rise to about $209.50 for 2027. For the specifics on ending Marketplace coverage when Medicare starts, see does Obamacare coverage end at 65 and who’s eligible for Medicare.
Why your state changes the price
KFF’s 2026 numbers put the benchmark plan as low as $401 a month in New Hampshire and as high as $1,299 in Vermont, which prices coverage the same at every age instead of scaling it up toward 64 the way most states do. New York also doesn’t rate by age, so its $817 benchmark is unusually low for someone at the top of the federal curve. See North Carolina’s guide for a state that does use the standard age curve, and what your options look like if you retire early if 64 means you’re already off an employer plan.
Health insurance costs at other ages: 26, 30, 40, 50 and 60, plus couples.
See 2027 plans and prices where you live: compare quotes by ZIP code.
Frequently asked questions
How much does health insurance cost for a 64-year-old?
The 2026 national benchmark plan for a 64-year-old runs about $1,467 a month before subsidies, the highest point on the federal age curve.
When should a 64-year-old sign up for Medicare?
During the seven-month Initial Enrollment Period built around your 65th birthday. Signing up in the three months before your birthday month starts coverage that same month; signing up later delays it.
Does Marketplace coverage automatically end at 65?
No. You have to cancel the Marketplace plan yourself, ideally timed so it ends the day before Medicare starts. Once your Medicare coverage begins, you can’t keep a premium tax credit on the Marketplace plan.
Why does the subsidy cliff cost so much more at 64 than at 30?
Because the age curve makes a 64-year-old’s full price the highest of any age, so losing the premium tax credit above 400% of the poverty level adds the largest dollar amount to the bill.
Sources
This article is general information, not insurance or tax advice. Your actual premium depends on your state, county, insurer and exact income. Last reviewed September 2026.