COLA Ledger

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

2020 Medicare Part B premium — $144.60

Standard monthly Part B premium, 2020

$144.60

+$9 on 2019. The annual deductible was $198, +$13 on the year before.

Standard premium
$144.60per month
Annual deductible
$198
Change on 2019
+$96.72%
Highest tier
$491.606 income brackets

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 2019 became $2,032 gross with the 1.6% adjustment — a rise of +$32. After the premium went from $135.50 to $144.60, the payment rose +$23, an effective 1.23%.

A $2,000 benefit through the 2020 adjustment and premium
20192020
Gross monthly benefit$2,000$2,032
Part B premium$135.50$144.60
Net payment$1,864$1,887

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

The 2020 income-related tiers

Anyone whose modified adjusted gross income on the 2018 tax return crossed the first threshold paid more than the standard premium. The adjustment is a flat dollar amount per tier, not a percentage of income, and it steps at the bracket boundary rather than phasing in.

2020 Medicare Part B income-related monthly adjustment, by 2018 modified adjusted gross income
SingleMarried filing jointlyAdjustmentTotal Part B
Up to $87,000Up to $174,000none$144.60
$87,001 to $109,000$174,001 to $218,000$57.80$202.40
$109,001 to $136,000$218,001 to $272,000$144.60$289.20
$136,001 to $163,000$272,001 to $326,000$231.40$376.00
$163,001 to $499,999$326,001 to $749,999$318.10$462.70
$500,000 and above$750,000 and above$347.00$491.60

The 2020 brackets in detail, including the reconstruction check — every tier is verified against the statutory multipliers as well as against the notice.

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 2020. Page figures last verified against the sources above on 10 August 2026. Corrections: the correction log · support@inventum.com.au