COLA Ledger

An independent reference — not affiliated with the Social Security Administration. Every figure traced to the government publication that produced it.

2025 Medicare Part B premium — $185.00

Standard monthly Part B premium, 2025

$185.00

+$10 on 2024. The annual deductible was $257, +$17 on the year before.

Standard premium
$185.00per month
Annual deductible
$257
Change on 2024
+$105.90%

What it did to a Social Security payment

The Part B premium is withheld from the Social Security payment, so it lands in the same January as the cost-of-living adjustment and the two move against each other. A $2,000 monthly benefit in 2024 became $2,050 gross with the 2.5% adjustment — a rise of +$50. After the premium went from $174.70 to $185.00, the payment rose +$40, an effective 2.19%.

A $2,000 benefit through the 2025 adjustment and premium
20242025
Gross monthly benefit$2,000$2,050
Part B premium$174.70$185.00
Net payment$1,825$1,865

The full ledger for a $2,000 benefit at current rates carries the annual figures and the percentile context.

No income-related table is committed for this year

The Federal Register notice for 2025 states the tier percentages in prose but publishes no bracket table, and this site does not hand-key a table it could not read from a primary source. The standard premium and deductible above are primary-sourced and complete. The coverage gaps are listed in full.

Related

Sources and freshness

Every year page draws on that year’s own Federal Register notice, retrieved from govinfo rather than from cms.gov.

Figures effective 1 January 2025. Page figures last verified against the sources above on 10 August 2026. Corrections: the correction log · support@inventum.com.au