In 2025, the standard Medicare Part B premium deducted from your Social Security check is $185.00 per month. That’s the amount most people pay. If your income is higher, you’ll pay more, and if you have a Part D drug plan, an additional surcharge may also come out of your check. Here’s how it all breaks down.
The Standard Part B Deduction
Medicare Part B covers doctor visits, outpatient care, and preventive services. The premium is automatically deducted from your Social Security benefit each month before your payment arrives. For 2025, that standard deduction is $185.00 per month, or $2,220 per year. This applies to individuals earning $106,000 or less, or married couples filing jointly who earn $212,000 or less.
The premium amount changes every year, typically going up. For 2026, the standard Part B premium has not yet been finalized at the time of writing, but the income brackets and surcharge tables have already been published by the Social Security Administration, with the first IRMAA tier for individuals starting at $109,000.
Higher Income Means a Higher Deduction
If your income exceeds certain thresholds, Medicare adds an income-related monthly adjustment amount (IRMAA) on top of the standard premium. Social Security uses your tax return from two years prior to determine your bracket. For 2025, that means your 2023 income.
Here’s what individuals pay in total monthly Part B premiums for 2025, based on income:
- $106,000 or less: $185.00
- $106,001 to $133,000: $259.00
- $133,001 to $167,000: $370.00
- $167,001 to $200,000: $480.90
- $200,001 to $499,999: $591.90
- $500,000 or more: $628.90
For married couples filing jointly, the thresholds are roughly double: $212,000, $266,000, $334,000, $400,000, and $750,000. If you’re married but file separately and lived with your spouse at any point during the year, the brackets are less favorable. You’d jump to $591.90 per month if your individual income exceeds $106,000.
Part D Drug Plan Surcharges
If you have a Medicare Part D prescription drug plan and your income exceeds $106,000 (individual) or $212,000 (joint), Social Security also deducts an additional Part D surcharge from your check. This is separate from whatever your drug plan itself charges.
For 2025, the Part D IRMAA surcharges range from $13.70 per month at the lowest tier up to $85.80 per month at the highest income level. These amounts are deducted from your Social Security payment regardless of how you normally pay your drug plan premiums. If the combined deductions exceed your Social Security payment, you’ll receive a separate bill instead.
How the Deduction Actually Works
Social Security subtracts your Medicare premiums from your gross benefit before sending your payment. So if your full Social Security benefit is $2,000 per month and you owe the standard $185 Part B premium, your deposited check will be $1,815 (before any other withholdings like taxes). You don’t need to take any action to set this up. Once you enroll in Medicare, the deduction happens automatically.
Premium changes take effect in January each year. When Medicare raises the Part B premium, your January Social Security payment will reflect the new amount.
The Hold Harmless Rule
A provision called “hold harmless” prevents your Social Security check from shrinking because of a Part B premium increase. If the annual cost-of-living adjustment to your Social Security benefit isn’t large enough to cover the premium hike, your premium increase is capped at the dollar amount of your raise. Your net check stays the same rather than going down.
To qualify, you need to be receiving Social Security benefits and have your Part B premiums deducted from those benefits in both November and December of the current year. Most beneficiaries meet these conditions. However, the hold harmless rule does not apply to IRMAA surcharges, so higher-income beneficiaries can still see their checks decrease.
Late Enrollment Penalties
If you didn’t sign up for Part B during your initial enrollment window and didn’t have qualifying coverage through an employer, a permanent penalty gets added to your monthly premium. The penalty is an extra 10% for each full 12-month period you were eligible but didn’t enroll. Two years late means a 20% surcharge on top of the standard premium, for as long as you have Part B.
Part D has a similar penalty structure, but it’s calculated differently: 1% of the national base premium for each month you went without creditable drug coverage. That works out to about 12% per year of delay.
Ways Your Deduction Could Be Lower
Some Medicare Advantage plans offer what’s called a “Give Back” benefit that reduces your Part B premium. These plans use a portion of their federal funding to credit money back to your Social Security check, effectively lowering the Medicare deduction. The reduction varies by plan and location. If you enroll in one of these plans, the first Give Back payment may take up to two months to show up as a higher Social Security deposit.
You can also appeal your IRMAA surcharge if your income has dropped significantly since the tax year Social Security is using, for example due to retirement, divorce, or the death of a spouse. This is done through a “life-changing event” request with the Social Security Administration, which can move you to a lower premium bracket based on your current or expected income rather than the two-year-old return.