Can a Roth Conversion Increase Your Medicare Premiums?
Yes. A Roth conversion can increase your future Medicare Part B and Part D premiums because the taxable portion of the conversion generally increases adjusted gross income.
A realistic Medicare retirement budget should include much more than the Medicare Part B premium.
Your total healthcare budget can include:
In 2026, the standard Part B premium is $202.90 per month per person.
For a married couple with both spouses on Medicare, that’s already:
$4,869.60 per year
before Medigap, Part D, prescriptions or other healthcare expenses.
2026 standard premium:
$202.90 per month per person
Annual cost:
$2,434.80 per person
Married couple:
$4,869.60 per year
before IRMAA.
Higher-income retirees can pay substantially more for both:
Part B
and
Part D.
Include IRMAA in your retirement-income planning if your MAGI is near or above an income threshold.
If you choose Original Medicare with Medigap, include the monthly premium for:
Plan G
Plan N
or another Medigap plan.
Remember that Medigap premiums can increase over time.
Part D premiums vary by plan.
Don’t budget based only on premium.
Include your expected prescription costs.
In 2026, covered Part D drug out-of-pocket costs are capped at:
$2,100 per year
Once you reach the threshold, you pay $0 for covered Part D drugs for the rest of the calendar year.
Original Medicare generally doesn’t cover routine dental care.
Budget separately for:
unless another insurance plan covers them.
Consider:
These can create meaningful retirement expenses.
If you choose Medicare Advantage, budget for:
A $0 plan premium doesn’t mean $0 medical expenses.
Medicare generally doesn’t pay for indefinite custodial long-term care.
This is one of the largest healthcare risks that needs to be considered separately from normal Medicare budgeting.
Suppose one retiree has:
Part B
$202.90 × 12 = $2,434.80
Medigap
Hypothetical $160/month = $1,920
Part D
Hypothetical $25/month = $300
Dental/Vision/Hearing Reserve
Hypothetical = $1,000
Before prescription copays and miscellaneous healthcare:
$5,654.80 per year
This is only an illustration. Actual costs vary significantly.
Don’t Assume Healthcare Inflation Stops at 65
Medicare premiums, Medigap premiums, drug costs and other healthcare expenses can increase during retirement.
A 65-year-old may be budgeting for Medicare over a 20- or 30-year retirement.
Build inflation into the plan.
How Much Should You Budget for Medicare in Retirement?
I think retirement plans often underestimate healthcare because they use one number:
The Medicare premium.
That’s not enough.
I want a retiree budgeting for:
Part B
supplement or Medicare Advantage
Part D
prescriptions
dental
vision
hearing
and a separate conversation about:
long-term care.
Healthcare is one of the expenses you want to over-plan rather than under-plan in retirement.
Yes. A Roth conversion can increase your future Medicare Part B and Part D premiums because the taxable portion of the conversion generally increases adjusted gross income.
Selling your home can potentially increase future Medicare Part B and Part D premiums if the sale creates taxable income that pushes your modified adjusted gross income into a higher IRMAA bracket.
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