Can Medicare take more than your Social Security cost-of-living raise? For some retirees, the hold-harmless rule says no. But it is a narrow protection, not a guarantee that your bank deposit will never go down.
The distinction that matters: if you pay an income-related monthly adjustment amount (IRMAA), you do not qualify for the Part B hold-harmless protection at all. Not just for the surcharge. Social Security’s own operating rules exclude IRMAA payers from the special reduced Part B premium. That can leave you with a smaller deposit even after a COLA.
2026 rule: The standard Medicare Part B premium rose from $185.00 to $202.90, an increase of $17.90. Social Security benefits rose 2.8%. Eligible people whose dollar COLA was less than $17.90 may have had their Part B premium increase limited. People paying IRMAA are not eligible for that limit.
Start by checking how you pay Part B and whether you owe IRMAA. Your benefit amount alone cannot answer it.
On This Page
- What the Medicare hold-harmless provision actually protects
- Who qualifies for hold-harmless protection?
- Why IRMAA means you are not held harmless
- Two 2026 examples: a protected check and a shrinking check
- Who does not qualify for hold-harmless protection?
- What about 2027? The Social Security COLA is known
- What to check if your Social Security payment drops
- Frequently asked questions
- Where to go from here
- Official sources and verification
What the Medicare hold-harmless provision actually protects
The law, in Section 1839(f) of the Social Security Act, prevents an eligible person’s Social Security or Railroad Retirement benefit from falling because of the annual increase in the regular Part B premium. Think of it as a limit on one deduction, not an insurance policy for your entire Social Security payment.
In 2026, CMS set the Part B standard premium at $202.90, up from $185.00 in 2025. SSA announced a 2.8% COLA. These two numbers are both official, but a 2.8% raise is a different dollar amount for every beneficiary.
If your gross benefit was $600 per month, a simple 2.8% illustration gives you a $16.80 increase. If it was $3,000, it gives you $84. The first amount is below the $17.90 Part B increase; the second is above it. Actual benefit notices may differ slightly because of rounding, deductions and individual circumstances.
Who qualifies for hold-harmless protection?
SSA’s eligibility explanation and its operating instructions describe the basic test. The provision can apply when you:
- Were entitled to Social Security or Railroad Retirement benefits in the relevant prior-year months,
- Had your Part B premiums deducted from those benefits in the applicable December and January comparison months,
- Do not pay a Part B income-related monthly adjustment amount, and
- Have a dollar COLA smaller than the increase in the standard Part B premium.
A retiree collecting $500 a month is not automatically protected. If Medicare bills them directly, or they just joined Part B, or they pay IRMAA, the usual hold-harmless calculation may not apply. Check the deductions and the eligibility rules before relying on a shortcut.
Why IRMAA means you are not held harmless
This is the part people miss. SSA’s Program Operations Manual states that anyone paying an income-related Part B premium does not get hold-harmless protection. This is stronger than saying the surcharge alone is outside the cap. When IRMAA applies, you generally pay the full standard Part B premium plus the income-related adjustment.
For 2026, the ordinary IRMAA threshold begins above $109,000 in modified adjusted gross income for an individual filer or $218,000 for married filing jointly. The first Part B IRMAA tier adds $81.20 to the $202.90 standard premium, producing a $284.10 total. The filing status and exact bracket matter; married filing separately follows different thresholds. See the complete 2026 Part B premium explanation for the full schedule.
Social Security generally looks to your 2024 tax return for 2026 IRMAA. Its definition of Medicare MAGI is Form 1040 line 11 (AGI) plus tax-exempt interest on line 2a, not line 11 alone. If you are unsure what counts, use the IRMAA income guide rather than treating one number on the return as the whole test.
To sort individual income sources before you compare premium brackets, try the IRMAA income checker. It helps classify inputs; it does not decide whether hold harmless applies.
Wrong: “My standard Part B premium is still held harmless; only IRMAA can rise.”
Correct: The presence of Part B IRMAA disqualifies the beneficiary from the special hold-harmless rate. The standard premium and the income-related adjustment both matter when calculating the actual deduction.
Two 2026 examples: a protected check and a shrinking check
Edith: A small benefit, with hold-harmless protection
Edith is a hypothetical example, not a reported client. Assume she had a $600 monthly gross Social Security benefit in 2025, paid the $185 standard Part B premium, had the premiums deducted continuously and owed no IRMAA.
- 2025: $600 benefit − $185 Part B = $415 net.
- 2026 gross benefit: $600 + 2.8% = $616.80 (simplified).
- Her protected Part B rate: $185 + $16.80 COLA = $201.80, rather than the $202.90 standard rate.
- 2026: $616.80 − $201.80 = $415 net.
The special rate absorbs her entire COLA. It does not make Medicare free and does not protect against every other deduction.
Frank: A COLA, but less money deposited
Frank is also a hypothetical example. Assume he received $3,000 in gross Social Security benefits in 2025, paid $185 for Part B, had no IRMAA that year and then entered the first Part B IRMAA tier for 2026 because of a taxable gain in 2024.
- 2025 net: $3,000 − $185 = $2,815.
- 2026 gross: $3,000 + $84 COLA = $3,084.
- 2026 Part B deduction: $202.90 standard + $81.20 IRMAA = $284.10.
- 2026 net: $3,084 − $284.10 = $2,799.90.
- Difference: $2,799.90 − $2,815 = −$15.10 per month.
This simplified example excludes other deductions. A Part D IRMAA, if applicable, can change the deposit further.
Notice what changed: Frank did get his COLA. The net payment still fell because the Medicare deduction grew by more than the raise. This is a paperwork-and-timing question before it is a retirement-investment question.
Who does not qualify for hold-harmless protection?
Beyond people paying IRMAA, common exclusions include people new to Part B, people who have Part B premiums billed directly rather than deducted from their Social Security or Railroad Retirement benefit, and people whose Part B premium is paid by a state Medicaid agency. These are separate reasons for the special premium limit not to apply.
There is no need to turn this into a blanket claim that “30% are excluded.” Eligibility and the share actually receiving reduced premiums are different measurements, and both can change from year to year. A Congressional Research Service analysis estimated that only about 1.3% of Part B enrollees were actually held harmless in 2026, because most beneficiaries’ COLAs exceeded the $17.90 premium increase. That does not mean the other 98.7% were all legally ineligible.
For the distinction, see the Congressional Research Service’s Medicare Part B analysis. If the state helps pay someone’s Medicare premiums, the more relevant reader question may be Medicare Savings Program eligibility rather than hold-harmless math.
What about 2027? The Social Security COLA is known
Social Security announced a 3.6% COLA for 2027 on October 14, 2026. But as of this article’s October 25, 2026 review, the final standard Medicare Part B premium for 2027 has not been confirmed in the cited CMS release. Do not treat an actuarial projection as an announced premium. The potential hold-harmless difference for 2027 cannot be calculated reliably until the official Part B rate is available.
When your new benefit notice arrives, compare your gross benefit, the Medicare Part B deduction, any IRMAA and other deductions. Your bank deposit is the result of all those moving pieces.
What to check if your Social Security payment drops
- Start with the benefit notice. Compare the gross Social Security amount and the Medicare Part B deduction, not just the deposit. SSA says you can review your my Social Security account.
- Check for an IRMAA determination. For 2026, compare your 2024 MAGI (1040 line 11 plus 2a) with the official income brackets. Use the MAGI walkthrough if the return has capital gains, tax-exempt bonds or unusual items.
- Find the correct remedy. If the IRS information is incorrect, ask SSA how to correct the determination. If you had a qualifying life-changing event and income fell, the SSA-44 guide explains a new initial determination. A one-time rental-property sale by itself is not one of SSA’s qualifying life-changing events.
- Plan for the next premium year. A Roth conversion, sale, RMD or other income event may change future IRMAA. That is proactive IRMAA planning, a different job from asking SSA to reconsider an existing determination.
If SSA’s decision is already in dispute, use the IRMAA appeal process guide to distinguish a new initial determination from formal reconsideration and protect any applicable appeal deadline.
Don’t start by hunting for a magical $650 Social Security cutoff. Put your gross Social Security benefit, Part B premium deduction and IRMAA notice next to each other. Those three numbers will usually tell you which rule matters.
Then, if the issue is a documented life change rather than a general premium increase, use the correct SSA process before assuming nothing can be done.
Frequently asked questions
Does hold harmless protect someone who pays IRMAA in 2026?
No. SSA’s hold-harmless operating rules exclude people paying Part B IRMAA from the special reduced Part B premium. Such beneficiaries generally pay the full standard Part B premium plus their income-related adjustment.
Why did my Social Security payment go down despite the 2026 COLA?
A net payment can fall when Medicare deductions or other withholding increase by more than your gross COLA. If IRMAA began or rose, hold-harmless cannot cap the Part B deduction. Compare both benefit notices and any IRMAA determination.
Who qualifies for Medicare hold harmless in 2026?
Generally, qualifying Social Security or Railroad Retirement beneficiaries with the required prior-year entitlement and Part B deductions, no IRMAA and a dollar COLA smaller than the standard Part B premium increase. Individual facts and benefit rounding matter.
Is selling a rental property enough to appeal IRMAA with SSA-44?
No. A taxable property sale can raise Medicare MAGI, but a sale by itself is not an SSA-44 life-changing event. A separate qualifying event, such as work stoppage or reduction, may support a new initial determination when the other requirements are met.
Where to go from here
If the problem is the Part B premium itself, read the 2026 Part B rates. If it is the income surcharge, start with what counts toward IRMAA. If a real qualifying event lowered your income, use the SSA-44 filing steps. The separate guide to one-time income spikes explains why a large taxable event and an appeal are not automatically the same thing. For the separate connection between taxable Social Security and IRMAA, see the Social Security tax and IRMAA guide.
Medicare rules do not arrive in neat, isolated boxes. Your Social Security benefit, tax return and premium notice can all be correct and still produce a surprising bank deposit. That is the kind of connection I explain in Financial Clarity: one useful financial decision at a time.
Official sources and verification
- Social Security Administration — POMS HI 01001.004, Variable Supplementary Medical Insurance Premium. Rules and exclusions for hold harmless.
- Social Security Administration — How the Hold Harmless Provision Protects Your Benefits. Eligibility test and exclusions.
- Centers for Medicare & Medicaid Services — 2026 Parts A and B Premiums. 2025 and 2026 premium figures and income tiers.
- Social Security Administration — 2026 COLA Fact Sheet. Official 2.8% increase.
- Social Security Administration — POMS HI 01101.010. Medicare MAGI and two-year lookback.
- Social Security Administration — October 14, 2026 COLA Announcement. Official 2027 COLA; not Part B premium.
- Congressional Research Service — Medicare Part B premiums report. Estimated share actually held harmless in 2026.
