2025 Medicare Part D Base Premium: $36.78 (Official)
Published CMS amounts, with the income and coverage rules beside them.
Official
Part D national base beneficiary premium
$36.78
OfficialThis is a benchmark, not your bill.
Your plan sets your actual monthly premium. The base amount is used in penalty calculations and other Medicare formulas. The maximum standard deductible is $590.
For covered Part D drug out-of-pocket spending, the published amount is $2,000. Premiums and non-covered medicines do not count toward that drug-spending cap.
The recent trend.
| Year | Part D national base beneficiary premium | Status |
|---|---|---|
| 2024 | $34.70 | Official |
| 2025 | $36.78 | Official |
| 2026 | $38.99 | Official |
| 2027 | $41.33 | Official |
| 2028 | $43.81 | Projected |
Questions, answered.
Are the 2025 Medicare amounts official?
Yes. CMS published the amounts; the sources below identify the announcement.
Which income counts for IRMAA?
Modified adjusted gross income is ordinarily adjusted gross income plus tax-exempt interest from two tax years earlier. Certain changes can justify a new determination from SSA.
Will a married couple pay one premium?
Medicare costs are generally per enrolled person. Joint filing uses the joint income thresholds, but each spouse can owe a premium and surcharge.
Does the Part D base amount equal my plan premium?
No. It is a national benchmark. Your chosen plan premium and any Part D income-related surcharge are separate.
Can retirement reduce an IRMAA assessment?
Work stoppage or reduction can be a qualifying life-changing event. Follow SSA-44 and SSA’s evidence rules; a lower entered calculator income does not itself change the assessment.
Check the sources.
Data checked October 1, 2026. Announced November 8, 2024.