One dollar of income decides which row of Social Security’s 2026 Medicare premium table applies, and the third row is where the Part B bill doubles. For a single filer with income above $137,000, or joint filers above $274,000, the surcharge is $202.90 a month, exactly the size of the standard premium. A $37.50 monthly add-on for Part D comes with it.
The SSA-44 life-changing-event request. Whether a retiree’s own change of circumstances fits it is left open by the premium table, and The Retirement Tax & Withdrawal Planner holds the IRMAA appeal route (SSA-44) and an IRMAA tier calculator.
Sort a 2024 tax return against the SSA-44 route and IRMAA tier calculator →
The arithmetic behind a doubled Part B premium
The Social Security Administration’s Medicare premiums page states that “the standard Part B premium for 2026 is $202.90.” Medicare.gov’s Medicare costs page gives the same figure, “$202.90 each month (or higher depending on your income).” The surcharge for higher earners is called the income-related monthly adjustment amount, or IRMAA.
In the SSA table the third income row, above $137,000 up to $171,000 for a single filer and above $274,000 up to $342,000 for a married couple filing jointly, carries a Part B add-on of $202.90. Adding it to the standard premium gives $405.80 a month, which is twice the base. Over twelve months that is $4,869.60, compared with $2,434.80 for a retiree below the first threshold, a difference of $2,434.80 a year for a single beneficiary.
The Part D side of the same row adds $37.50 a month to whatever the drug plan charges, or $450 a year. Both amounts are paid on top of the plan’s own premium, and neither page says that the add-on shrinks for anyone near the bottom of the row.
Cliffs between the rows, not a slope
The rows of the table are steps. For single filers, income above $109,000 up to $137,000 carries an add-on of $81.20 for Part B and $14.50 for Part D. A single dollar above $137,000 moves the Part B add-on to $202.90 and the Part D add-on to $37.50, an increase of $121.70 and $23.00 a month. Above $171,000 up to $205,000 the Part B add-on is $324.60 and the Part D add-on is $60.40.
Joint filers face the same structure at double the dollar amounts: $218,000 and $274,000 bracket the first two surcharge rows, and the third starts above $274,000. The agency’s table does not describe any phase-in, so a retiree $500 over a line pays the full add-on of the row above it. The very top tiers are not covered here because two figures on the SSA page for the highest add-on disagree with each other.
A two-year-old return sets the 2026 bill
The page says the income used comes, “generally,” from “a tax return filed in 2025 for tax year 2024.” A retiree who sold a house, converted a retirement account to a Roth or took a large one-time distribution in 2024 can therefore be sorted into a higher row in 2026, even if income has fallen since.
The agency’s other lever is a reconsideration. The premium page describes a written “Request for Reconsideration (Form SSA-561-U2)” as the way to appeal an IRMAA decision and points to an online appeals portal. Which route applies depends on the reason: an error in the data differs from a change in circumstances.
The SSA-44 route for life-changing events
The Social Security Administration’s page on lowering IRMAA describes how to ask for a new decision. A beneficiary can sign in and complete the “Medicare Income-Related Monthly Adjustment Amount-Life Changing Event (SSA-44)” online, return the form with supporting evidence to a local Social Security office by fax or mail, or schedule an in-person appointment.
The premium page lists the events that count: marriage, divorce, the death of a spouse, work stoppage, reduced work hours, loss of income-producing property, a change in a pension plan and an employer settlement payment. The lower-IRMAA page names a shorter set, “marriage, divorce, the death of a spouse, loss of income, and an employer settlement payment.” The agency says the request must come with evidence, and neither page spells out which documents go with each event. Questions can go to the agency at 800-772-1213, Monday through Friday, 8 a.m. to 7 p.m., or 800-325-0778 for TTY.
The two-year lag, the cliffs and the paperwork for an SSA-44
Three features of the process make the premium hard to predict. The surcharge is set from a return filed in 2025 for tax year 2024. The tiers are cliffs, so a household that sits near $137,000 or $274,000 can move up or down a whole row on a small difference in income. And the SSA-44 request works only for the specific life-changing events the agency lists, each of which has to be supported with evidence the beneficiary gathers.
That leaves a retiree to work out two things before filing. One is which row the 2024 income put the household in. The other is whether the change that followed fits one of the events on the agency’s list. The page gives no checklist of what proof each event needs.
Asking Social Security for a new decision is done directly with the agency, online, by mail or fax, in person or by phone, and needs no paid help.
Matching a two-year-old return to the 2026 premium table
The surcharge is set from an old return and moves in steps, so a retiree whose income has since dropped needs to know both the current row and whether a qualifying event applies. The SSA-44 request is the agency’s route for that, and it depends on evidence the beneficiary supplies.
The Retirement Tax & Withdrawal Planner includes the IRMAA appeal route (SSA-44) and four calculators covering provisional income, IRMAA tier, RMD schedule and Roth bracket fill, so an income figure can be placed in its tier before a request is drafted.
Work out which IRMAA tier a 2024 tax return puts a household in →
AI assisted in drafting this article, which was checked against the Social Security Administration and Medicare.gov pages linked above.
