Yes, Medicare Part B premiums are automatically deducted from your Social Security check each month if you receive Social Security benefits. The Social Security Act Section 1839 is the federal law that governs this process, and it means your monthly Social Security payment is reduced before it ever hits your bank account. Roughly 75 million Social Security beneficiaries are affected by this deduction each year.
The standard Part B premium for 2026 is $202.90 per month, an increase of $17.90 from $185.00 in 2025. That’s over $2,400 per year pulled directly from your Social Security benefits before you see a dime. Higher-income earners pay even more through a surcharge called IRMAA, which can push that monthly deduction as high as $689.90.
Here is what you will learn:
- 💰 How Medicare Part B is deducted from your Social Security and exactly how much you’ll pay in 2026
- 🛡️ How the “hold harmless” provision protects your benefits from shrinking
- 📊 The IRMAA income brackets that could triple your monthly premium
- 🧾 Every payment method available if you’re not yet receiving Social Security
- ✅ Common mistakes that could cost you your Medicare coverage entirely
How the Part B Deduction Actually Works
Section 1839 of the Social Security Act requires the Social Security Administration (SSA) to deduct your Medicare Part B premium from your monthly benefit check. This is not optional. If you collect Social Security retirement, disability, or survivor benefits, the deduction happens automatically.
Each year, the Centers for Medicare & Medicaid Services (CMS) sets the Part B premium based on projected healthcare costs. The SSA then subtracts that amount from your gross Social Security payment. Your bank deposit reflects the net amount — what’s left after Part B (and potentially Part D IRMAA) is taken out.
You will receive a notice from Social Security each year, typically in late November or December, showing your new premium amount and deduction. This letter also confirms whether you owe the standard premium or a higher income-adjusted amount. The deduction appears on your mySocialSecurity account online if you want to verify it at any time.
What Medicare Part B Costs in 2025 and 2026
The Part B premium changes every year. Understanding both years helps you see how much more is being pulled from your Social Security going forward.
| Cost Component | 2025 | 2026 |
|—|—|
| Standard Monthly Premium | $185.00 | $202.90 |
| Annual Deductible | $257 | $283 |
| Annual Premium Total | $2,220 | $2,434.80 |
The 2026 increase of $17.90 per month is roughly a 10% jump. CMS stated that the increase would have been about $11 more per month if the Trump Administration had not addressed unprecedented spending on skin substitutes, which cut that spending category by an estimated 90%.
The Part B deductible also rose by $26. This means you pay the first $283 out of pocket before Medicare starts covering 80% of approved services. After meeting that deductible, you still owe a 20% coinsurance on most Part B services, with no annual cap under Original Medicare.
The Social Security COLA and Your Part B Premium
The Social Security cost-of-living adjustment (COLA) for 2026 is 2.8%, which averages about $56 per month for a typical retiree. The Part B premium increase of $17.90 per month eats up roughly 32% of that COLA increase before it reaches your bank account.
Part B premiums as a share of average annual Social Security benefits reached an all-time high of 9.4% in 2026. This means almost one out of every ten dollars in Social Security benefits now goes toward paying just one component of your Medicare coverage.
Example: Maria, a Typical Retiree
Maria receives $2,000 per month in Social Security in 2025. Her Part B premium is $185, so her net deposit is $1,815.
| Detail | 2025 | 2026 |
|—|—|
| Gross Social Security | $2,000 | $2,056 (2.8% COLA) |
| Part B Deduction | –$185.00 | –$202.90 |
| Net Deposit | $1,815.00 | $1,853.10 |
Maria’s check goes up by $38.10 in real dollars — not the $56 COLA she expected. The Part B increase absorbed 31.9% of her raise.
How the Hold Harmless Provision Protects You
The hold harmless provision under Section 1839(f) of the Social Security Act prevents your net Social Security check from decreasing due to a Part B premium increase. If the Part B hike would exceed your COLA increase, the provision caps your premium increase at the dollar amount of your COLA.
This protection kicks in automatically. You do not need to apply or call anyone. The SSA and CMS coordinate to enforce this cap behind the scenes.
Who Is Not Protected by Hold Harmless
Not everyone qualifies. The following groups must pay the full standard premium regardless of their COLA:
- People who are new to Medicare Part B that year
- Beneficiaries who do not have their Part B premium deducted from Social Security (those billed directly)
- Higher-income beneficiaries subject to IRMAA
- Dual-eligible individuals whose premiums are paid by Medicaid
- Beneficiaries enrolled in Medicare but not yet collecting Social Security
About four million low-income beneficiaries have their 2026 Part B increase capped because of this provision. For 2026 specifically, the 2.8% COLA was large enough for most beneficiaries to absorb the full premium increase, so the hold harmless provision was not widely triggered.
Example: James, a Low-Benefit Retiree
James collects only $900 per month in Social Security in 2025 and pays $185 in Part B. His 2.8% COLA gives him $25.20 more per month.
| Detail | 2025 | 2026 |
|—|—|
| Gross Social Security | $900.00 | $925.20 |
| Full Part B Premium | $185.00 | $202.90 |
| Hold Harmless Cap | N/A | $185.00 + $25.20 = $210.20 |
Because $202.90 is less than James’s hold harmless cap of $210.20, he pays the full $202.90 and still gains $7.30 per month in net income. If the premium had been higher than $210.20, his Part B would have been capped at $210.20 to protect his check from going down.
IRMAA: The Income Surcharge That Inflates Your Deduction
The Income-Related Monthly Adjustment Amount (IRMAA) is not a tax — it is an extra premium added to your Part B cost if your income exceeds certain thresholds. The SSA uses your modified adjusted gross income (MAGI) from your tax return filed two years prior. For 2026 premiums, the SSA looks at your 2024 tax return.
IRMAA affects roughly 8% of Medicare Part B enrollees. If you are in this group, your total monthly Part B deduction from Social Security can be significantly higher than the standard $202.90.
2026 IRMAA Brackets: Single Filers
| MAGI (Single) | Monthly Part B Premium |
|---|---|
| $109,000 or less | $202.90 (standard) |
| $109,001 – $137,000 | $284.10 |
| $137,001 – $171,000 | $405.80 |
| $171,001 – $205,000 | $527.50 |
| $205,001 – $499,999 | $649.20 |
| $500,000 or more | $689.90 |
2026 IRMAA Brackets: Married Filing Jointly
| MAGI (Joint) | Monthly Part B Premium |
|---|---|
| $218,000 or less | $202.90 (standard) |
| $218,001 – $274,000 | $284.10 |
| $274,001 – $342,000 | $405.80 |
| $342,001 – $410,000 | $527.50 |
| $410,001 – $749,999 | $649.20 |
| $750,000 or more | $689.90 |
The IRMAA surcharges for 2026 range from $81.20 to $487.00 on top of the standard premium. Income brackets rose by about 3%, but surcharges jumped roughly 9% compared to 2025.
Married Filing Separately: A Costly Trap
Couples who file separate tax returns face a much harsher IRMAA schedule. There are only three brackets instead of six, and the surcharge escalates far more quickly.
| MAGI (Married Filing Separately) | Monthly Part B Premium |
|---|---|
| $109,000 or less | $202.90 |
| $109,001 – $390,999 | $649.20 |
| $391,000 or more | $689.90 |
A person filing separately with $115,000 in income pays $649.20 per month — the same amount a single filer would not pay until their income exceeded $205,000. Filing separately can cost a beneficiary an extra $5,355.60 per year in Part B premiums alone.
Example: David and Susan, a High-Income Couple
David and Susan file jointly with a 2024 MAGI of $300,000. They both have Medicare Part B.
| Detail | David | Susan |
|—|—|
| Filing Status | Married Filing Jointly | Married Filing Jointly |
| 2024 MAGI | $300,000 (joint) | $300,000 (joint) |
| IRMAA Bracket | $274,001 – $342,000 | $274,001 – $342,000 |
| Monthly Part B | $405.80 | $405.80 |
| Combined Monthly | $811.60 | — |
| Combined Annual | $9,739.20 | — |
Their combined Part B premiums total $9,739.20 per year — deducted from their respective Social Security checks. That is $4,869.60 more than two beneficiaries paying the standard rate.
How to Appeal or Reduce Your IRMAA
The SSA allows you to request a reduction in your IRMAA if you experienced a qualifying life-changing event that lowered your income. You do this by filing Form SSA-44 (Medicare Income-Related Monthly Adjustment Amount — Life-Changing Event).
Qualifying life-changing events include:
- Marriage, divorce, or death of a spouse
- You or your spouse stopped working or reduced work hours
- Loss of income-producing property due to a disaster
- Employer pension plan termination, cessation, or reorganization
- Settlement from an employer’s closure or bankruptcy
You must provide documentation verifying the event and the income reduction, such as a death certificate, retirement letter, or a copy of your filed tax return. The SSA will then recalculate your IRMAA using your current year income instead of the two-year-old return.
If you believe the MAGI the SSA received from the IRS is incorrect, you must first correct the error with the IRS. Once corrected, contact the SSA to update your records. You also have the right to file a formal appeal using Form SSA-561-U2 (Request for Reconsideration), which you can submit online through ssa.gov.
All the Ways to Pay Part B if You Don’t Collect Social Security
If you are not receiving Social Security benefits — for instance, you are 65 but still working and have not filed for retirement benefits — your Part B premium is not automatically deducted. Instead, Medicare will send you a quarterly bill called the Notice of Medicare Premium Payment (CMS-500).
You have several payment options:
- Medicare Easy Pay — An automatic electronic funds transfer (EFT) from your bank account each month. This is the most hands-off option and eliminates missed payments.
- Online at Medicare.gov — You can log in and pay by credit card, debit card, or bank transfer.
- Bank bill pay — Set up recurring payments through your bank, though you must update the amount manually when premiums increase.
- Mail — Send a check, money order, or card payment with the coupon on your CMS-500 bill to the Medicare Premium Collection Center.
Railroad Retirement Board and OPM
If you receive benefits through the Railroad Retirement Board (RRB), your Part B premium is deducted from your RRB payment instead of Social Security. The same concept applies to Office of Personnel Management (OPM) civil service annuities. These beneficiaries must follow billing instructions from their respective agency.
Three Real-World Scenarios: What Happens to Your Check
Scenario 1: Standard-Income Retiree
Linda is 68 and receives $1,700 per month in Social Security. Her 2024 MAGI was $55,000 (well under the $109,000 IRMAA threshold).
| Financial Detail | Amount |
|---|---|
| 2026 Gross Social Security | $1,700 |
| Part B Deduction | –$202.90 |
| Net Monthly Deposit | $1,497.10 |
| Annual Part B Cost | $2,434.80 |
Linda pays only the standard premium. Her deduction is automatic, and she does nothing to manage it.
Scenario 2: Retiree Hit by IRMAA
Robert is 70 and collects $2,800 per month in Social Security. He sold rental property in 2024, pushing his MAGI to $180,000.
| Financial Detail | Amount |
|---|---|
| 2026 Gross Social Security | $2,800 |
| Part B Premium (IRMAA tier) | –$527.50 |
| Net Monthly Deposit | $2,272.50 |
| Annual Part B Cost | $6,330.00 |
Robert pays $324.60 more per month than a standard beneficiary because of a one-time property sale two years ago. He could file Form SSA-44 if his 2025 or 2026 income has returned to normal, but the SSA would need documentation that the income change was due to a qualifying event.
Scenario 3: Beneficiary Not Yet Collecting Social Security
Karen is 66 and enrolled in Medicare Part B, but she still works full-time and has not filed for Social Security benefits.
| Financial Detail | Amount |
|---|---|
| Social Security Check | $0 (not yet collecting) |
| Part B Billing Method | Quarterly CMS-500 bill |
| Quarterly Payment | $608.70 ($202.90 × 3) |
| Annual Part B Cost | $2,434.80 |
Karen is billed directly by Medicare every three months. If she misses a payment, Medicare can cancel her Part B coverage. She is not protected by the hold harmless provision because she does not have Part B deducted from Social Security.
Mistakes to Avoid With Medicare Part B and Social Security
These errors can cost you money, coverage, or both.
- Ignoring quarterly bills if you don’t collect Social Security. Failing to pay your CMS-500 bill on time can result in coverage termination. You may face a late enrollment penalty if you re-enroll later.
- Not filing Form SSA-44 after a life-changing event. If your income dropped due to retirement, divorce, or death of a spouse, you could be paying an IRMAA surcharge based on outdated income. The SSA will not automatically lower it.
- Filing taxes as married filing separately. This can push you into a dramatically higher IRMAA bracket compared to filing jointly. Review the bracket tables above before choosing your filing status.
- Assuming your COLA is a real raise. The 2.8% COLA for 2026 sounds helpful, but the Part B increase absorbs roughly 32% of the average raise. Budget based on your net deposit, not the headline number.
- Forgetting IRMAA uses income from two years ago. A large Roth conversion, capital gain, or property sale in 2024 affects your 2026 Part B premium. Plan major income events with this two-year look-back in mind.
Pros and Cons of Having Part B Deducted From Social Security
| Pros | Cons |
|---|---|
| Automatic — no bills to track or pay manually | Reduces your take-home Social Security each month |
| No risk of missed payments or accidental coverage loss | No control over timing — deduction happens before deposit |
| Hold harmless protection — your net check cannot decrease year over year | IRMAA surcharges can dramatically increase the deduction |
| Simplicity — one less bill in your financial life | COLA erosion — premium increases eat into cost-of-living raises |
| No processing fees — unlike some bank bill pay or credit card methods | Less visible — many retirees don’t realize how much is being withheld |
Do’s and Don’ts for Managing Your Part B Deduction
Do’s:
- Do check your mySocialSecurity account each December to verify your new premium and net benefit.
- Do file Form SSA-44 promptly if you experience a qualifying life-changing event that reduces your income.
- Do coordinate large income events (Roth conversions, property sales) with a tax advisor who understands the two-year IRMAA look-back.
- Do enroll in Medicare Easy Pay if you are not yet collecting Social Security — it prevents missed quarterly payments.
- Do check whether you qualify for a Medicare Savings Program if your income is limited.
Don’ts:
- Don’t assume your COLA increase is money in your pocket — Part B is deducted first.
- Don’t ignore the annual SSA letter — it contains your exact premium, your IRMAA status, and your appeal rights.
- Don’t file taxes as married filing separately without checking the IRMAA consequences.
- Don’t confuse the Part B premium with the Part B deductible — the premium is your monthly cost, the deductible is the $283 annual threshold before Medicare shares costs.
- Don’t wait to contest an incorrect IRMAA — you have the right to appeal using Form SSA-561-U2 or online.
State Help: Medicare Savings Programs That Pay Your Part B
Federal law created Medicare Savings Programs (MSPs) that are run by each state. These programs use state Medicaid funds to pay Part B premiums for low-income beneficiaries. Eligibility rules and income limits vary by state, but the federal minimum thresholds for 2026 are set by the federal poverty level (FPL).
The Four Medicare Savings Programs
Qualified Medicare Beneficiary (QMB) — Covers Part B premiums, Part A premiums (if applicable), plus deductibles, coinsurance, and copayments. Income limit for 2026: $1,350/month individual, $1,824/month married couple. Resource limit: $9,950 individual, $14,910 couple.
Specified Low-Income Medicare Beneficiary (SLMB) — Covers only the Part B premium. Has slightly higher income limits than QMB but does not cover deductibles or coinsurance.
Qualifying Individual (QI) — Also covers Part B premiums only. Available to individuals with income between 120% and 135% of the FPL. Funded through a block grant, so enrollment is first-come, first-served — once funds run out, no new applicants are accepted for that year.
Qualified Disabled and Working Individuals (QDWI) — Helps pay Part A premiums for certain disabled individuals who lost premium-free Part A when they returned to work.
Many states set income and resource limits above the federal minimums. Contact your State Health Insurance Assistance Program (SHIP) to find out your state’s specific limits and apply. If you qualify for QMB, providers are legally prohibited from billing you for Medicare cost-sharing.
Key Entities and How They Interact
CMS (Centers for Medicare & Medicaid Services) sets the Part B premium each year based on projected healthcare costs. SSA (Social Security Administration) deducts that premium from your monthly benefit and determines your IRMAA based on IRS data. The IRS provides your MAGI to the SSA, which is used to place you in an IRMAA bracket. State Medicaid offices administer Medicare Savings Programs that can pay your Part B premium if you qualify. The Railroad Retirement Board handles Part B deductions for railroad retirees instead of the SSA.
These agencies share information automatically. You generally do not need to notify one agency about changes made at another, with one exception: if your IRS records are wrong, you must correct the error with the IRS first before the SSA will adjust your IRMAA.
FAQs
Is Medicare Part B automatically deducted from Social Security?
Yes. If you receive Social Security benefits, Part B premiums are automatically withheld each month before your deposit. You do not need to set this up.
Can I opt out of having Part B deducted from Social Security?
No. The deduction is mandatory under federal law for anyone receiving Social Security and enrolled in Part B. You cannot choose a different payment method while collecting benefits.
How much is the 2026 Medicare Part B premium?
The standard premium is $202.90 per month. Higher-income beneficiaries pay up to $689.90 due to IRMAA surcharges.
Does the hold harmless provision protect everyone?
No. It only protects beneficiaries whose Part B is deducted from Social Security. New enrollees, directly billed beneficiaries, and IRMAA payers are excluded.
Can I get help paying my Part B premium?
Yes. State Medicare Savings Programs like QMB and SLMB pay Part B premiums for qualifying low-income individuals. Contact your state Medicaid office.
What income triggers IRMAA for Part B in 2026?
Any MAGI above $109,000 for single filers or $218,000 for joint filers triggers an IRMAA surcharge based on income from your 2024 tax return.
Does IRMAA apply to both spouses?
Yes. Each spouse enrolled in Part B pays the IRMAA surcharge individually, doubling the household cost of higher premiums.
Can I appeal my IRMAA determination?
Yes. File Form SSA-44 for a life-changing event, or Form SSA-561-U2 to formally appeal. Online appeals are available at ssa.gov.
What happens if I don’t pay my Part B bill on time?
Your Part B coverage can be terminated for non-payment. Re-enrolling may require waiting for the General Enrollment Period and paying a late penalty.
Is the Part B premium tax-deductible?
Yes. Medicare Part B premiums count as a medical expense and may be deducted on your federal tax return if you itemize deductions and exceed the 7.5% AGI threshold.
Related reading
- How Income Affects Medicare Part B (IRMAA)? (w/Examples) + FAQs
- Do Self-Employment Taxes Pay Into Social Security? (w/Examples) + FAQs
- Can I Have Medicare Part B and Employer Coverage? (w/Examples) + FAQs
- Are IRMAA Surcharges Permanent? (w/Examples) + FAQs
- Does IRMAA Apply to Medicare Part D? (w/Examples) + FAQs
- What Is Medicare Part B IRMAA? (w/Examples) + FAQs
- Is Nationwide Long-Term Care Insurance Worth It? (w/Examples) + FAQs