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How to Check Whether a Social Security COLA Increase Will Raise Your Medicare Costs

The 2026 COLA is 2.8%, but your net Social Security payment may rise by less after Medicare deductions. Here’s how to check your benefit notice, premiums and IRMAA.
From TheFinanceBase Team13 min to read
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A Social Security cost-of-living adjustment (COLA) does not automatically raise your Medicare premium. For 2026, Social Security benefits payable in January increased by 2.8%, while the standard monthly Medicare Part B premium is $202.90. Your net Social Security payment can rise by less than 2.8% because Medicare premiums and other applicable offsets are deducted. To check your own result, compare the new benefit amount in your COLA notice with your Medicare deductions and the payment you receive.

The key is to keep three figures separate: your benefit before deductions, the Medicare charges withheld from it, and the amount ultimately paid to you. A COLA notice helps identify the first figure; your Medicare premium information and payment records help explain the other two.

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What the 2026 COLA changes—and what it does not

The 2026 Social Security COLA is 2.8%. The Social Security Administration (SSA) based it on the increase in the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W) from the third quarter of 2024 to the third quarter of 2025. The adjustment applies to Social Security benefits payable in January 2026.

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A COLA adjusts the benefit calculation to account for inflation. It is not the same thing as the amount deposited into your bank account. SSA’s Office of the Chief Actuary explains that an offset to a benefit, including the Medicare Supplementary Medical Insurance (SMI) premium, is subtracted. As a result, the percentage increase in your gross benefit and the change in your net payment can differ.

Medicare premiums follow their own rules. The standard 2026 Part B premium is $202.90 per month. Some beneficiaries pay more because of an income-related monthly adjustment amount (IRMAA). Part D has a plan premium, which varies by plan, and an income-related adjustment may also apply. Neither a 2.8% COLA nor the standard Part B premium alone tells you how much your own bank deposit will change.

It helps to think of the COLA and Medicare charges as two calculations that can affect one payment. The COLA changes the benefit calculation. Medicare premiums and any applicable IRMAA are deductions or charges with separate rules. A higher Medicare deduction can reduce how much of the benefit increase reaches you, but the COLA itself does not automatically determine your IRMAA tier.

Find the new benefit amount in your COLA notice

Start with the official figure SSA gave you, rather than estimating your increase from your current bank deposit. Most beneficiaries can view their 2026 COLA notice in the Message Center of a my Social Security account. SSA also mails COLA notices during December.

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  1. Sign in to your my Social Security account.
  2. Open the Message Center and locate your 2026 COLA notice. If you do not use an online account, use the mailed notice.
  3. Find the new benefit amount stated in the notice. Treat this as the benefit figure to compare—not necessarily the amount that will reach your bank account.
  4. Compare it with your prior benefit amount if you want to see the gross change. Then separately check the deductions and the payment you actually receive.

The notice is the best starting point for your own benefit figure. A general COLA percentage cannot, by itself, establish the change to every person’s payment: the underlying benefit amount and deductions matter.

When you make the comparison, write down the amount from the notice and the amount from the period before the adjustment. Keep the dates or payment periods with the figures so that you are not comparing a new benefit amount with an older deposit, or a gross figure with a net one. The purpose is not to recreate SSA’s benefit calculation; it is to identify which part changed and whether deductions explain the difference you see.

If you cannot find the notice online, use the mailed notice if you received one. If you still do not have the amount, contact SSA rather than relying on a rough estimate based on the 2.8% headline. SSA says most beneficiaries can see the notice in the Message Center, and it mails notices during December.

Compare the gross benefit with the net payment

Use three figures to understand what happened: the benefit amount before deductions, Medicare premiums withheld from it, and the net amount paid to you. Your net payment is what remains after applicable deductions or offsets. If the gross benefit went up but the deposit rose by less, the difference may reflect a change in deductions rather than a smaller COLA calculation.

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A useful comparison is:

Change in net payment = change in gross benefit − change in deductions.

For example, suppose a person’s gross benefit rises by $56 and their deductions rise by $25. The net payment rises by $31. Those figures are an arithmetic illustration, not a prediction of any beneficiary’s payment or a statement of actual premium changes. To calculate your own net change, use the amounts on your notices and payment records.

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Compare the old and new periods consistently: use the prior gross benefit and deductions alongside the new gross benefit and deductions. Looking only at the COLA percentage, or comparing the new notice with a deposit that already reflects a Medicare withholding, mixes different figures and can make the increase look wrong.

For a clear comparison, make a simple two-period list:

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  • Before: prior benefit amount, prior Part B deduction, prior Part D amount if applicable, any other offset shown, and the payment received.
  • After: the new benefit amount from the COLA notice, current Part B deduction, current Part D amount if applicable, any other offset shown, and the payment received.

Then compare like with like. The difference between the two benefit amounts is the gross change. The difference between the two sets of deductions is what reduced or increased the amount left over. The deposits are a final check on the net result. This format also makes it easier to explain the issue if you contact SSA: you can point to the particular amount that does not match, instead of saying only that the COLA seems too small.

Do not use the 2.8% figure as if it were a promise that your bank deposit will also rise by 2.8%. It describes the adjustment to Social Security benefits, while the net payment reflects applicable deductions and offsets. Nor should you assume that a deduction changed simply because the annual COLA took effect. Check the actual amounts shown for each period.

Check your Part B and Part D charges

Part B

The standard monthly Part B premium for 2026 is $202.90. It is the standard amount, not a guarantee that every beneficiary pays that amount. Beneficiaries above the applicable income thresholds may owe a higher, income-adjusted premium under IRMAA. Check the amount that applies to you rather than assuming the standard premium is your personal charge.

For the 2026 standard Part B premium tier, SSA’s displayed upper income cutoffs are $109,000 for an individual and $218,000 for a married couple filing jointly. These figures describe the upper cutoffs displayed for the standard tier; they are not a complete set of IRMAA brackets. If your income is above the relevant cutoff, a higher premium may apply. To identify a particular tier, check the full SSA table and match both the filing status and income information used for your determination.

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Use the $202.90 figure as a reference point, not as a substitute for the charge listed for you. If your Part B deduction is higher, that does not by itself show that the COLA caused the difference. Check whether an IRMAA amount applies and review the income year and filing status behind the determination.

Part D

Part D combines the premium charged by a person’s prescription drug plan with any applicable IRMAA. Plan premiums vary, so the standard Part B figure does not describe a beneficiary’s total Medicare deductions. Check the Part D amount separately when it applies to you.

Part B and Part D therefore are not interchangeable comparison points. Part B has a standard monthly premium amount, although income can raise it. Part D has a plan premium that varies by plan, and an income-related adjustment may be added for some beneficiaries. If your total Medicare deductions changed, separate the Part B and Part D amounts before trying to explain the overall difference.

Look at the amount that actually applies to your coverage rather than treating the Part B standard premium as your total Medicare cost. If you have a Part D charge, review it as its own line in your comparison. This is especially useful when the total deduction changed but the Part B amount alone does not explain why.

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Understand why an IRMAA amount may not match your current income

IRMAA is separate from the COLA calculation. SSA determines it using income information from the most recent federal income tax return it receives from the IRS. That means the income used for an IRMAA decision may not describe your finances today. Your filing status also matters when applying the relevant thresholds.

When a premium seems unexpectedly high, check the income year and filing status SSA used, then compare that information with the full premium guidance for 2026. Do not assume that SSA calculated IRMAA using your current monthly income, or that the COLA itself set your IRMAA tier. SSA regulations say beneficiaries are notified when their Social Security benefit amounts change based on an IRMAA determination.

A COLA and IRMAA can affect the same overall payment, but through separate calculations: the COLA changes the benefit calculation, while IRMAA changes certain Medicare charges according to income rules. The practical result is visible in the net payment after deductions.

This distinction matters when the income on a recent tax return differs from your circumstances now. SSA’s determination uses the most recent federal return it receives from the IRS, not a direct calculation from the COLA percentage. First confirm the return and filing status used. Then determine whether the difference is simply that the return reflects an earlier financial situation or whether there is a specific determination detail you need SSA to review.

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For example, if your current income is lower than the income reflected in the return used for IRMAA, do not assume that the premium will automatically be recalculated from your current income. The review route described by SSA applies when income has fallen because of a qualifying life-changing event. Check whether your circumstances meet SSA’s rules and use the designated process if they do.

Ask SSA to review IRMAA after a qualifying life-changing event

If your income has fallen because of a qualifying life-changing event, you can ask SSA to review your IRMAA using Form SSA-44. This is a route for circumstances that meet SSA’s qualifying-event rules; a lower current income, by itself, is not enough to establish that the request qualifies.

  1. Review the IRMAA determination and identify the income information and filing status it used.
  2. Check whether your income changed because of an event SSA recognizes as qualifying.
  3. Contact SSA about requesting a review with Form SSA-44, and follow the form’s instructions for providing the information needed for your circumstances.

A review request is not an automatic change to a premium. SSA must consider the circumstances under its rules. If your concern is a calculation or filing-status mismatch rather than a qualifying life change, start by checking the determination details and asking SSA about the discrepancy.

Keep the question you are asking clear. If the issue is that the tax-return income or filing status appears incorrect, ask about that information. If the income was correctly used for the determination but later fell after a qualifying event, ask about Form SSA-44. Those are different situations, and a current income reduction alone does not establish eligibility for an IRMAA reduction.

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Follow the form instructions for the information SSA needs for your circumstances. The form is a way to request consideration; it does not guarantee a particular premium or an immediate adjustment. Keep the determination and the information you used to check it available when speaking with SSA.

Troubleshoot a smaller-than-expected increase

Work through the figures in order instead of treating every difference as a COLA error:

  • The benefit amount in the notice is different from your estimate: use the amount in the notice as your official new figure and compare it with the prior benefit amount, not your bank deposit.
  • The notice amount rose but your deposit rose less: compare Medicare deductions and other applicable offsets across the two periods. The net payment can reflect both the increased benefit and deductions.
  • Your Part B deduction is above $202.90: check whether an income-adjusted IRMAA amount applies. The standard premium is not every beneficiary’s premium.
  • Your Part D deduction changed: examine the plan premium and any applicable Part D IRMAA separately from Part B.
  • The IRMAA amount does not reflect your current finances: check the tax-return income year and filing status SSA used. If income fell after a qualifying life-changing event, ask about Form SSA-44.

If those checks do not explain the difference, use the notice and your payment information when contacting SSA. Comparing the specific amounts is more useful than relying on the COLA percentage alone.

A practical sequence is to start with the 2026 COLA notice, then check your deductions, then examine any IRMAA determination. This prevents several common mix-ups:

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  • Gross versus net: a benefit amount in a notice and a bank deposit are different figures when Medicare or other offsets are withheld.
  • Standard versus personal Part B premium: $202.90 is the 2026 standard amount, while an IRMAA tier can make an individual’s charge higher.
  • Part B versus Part D: Part D plan premiums vary and should not be folded into the standard Part B figure.
  • Prior return versus present income: SSA uses the most recent federal tax return it receives from the IRS, so current circumstances may not match the income behind the original IRMAA determination.

If you still see an unexplained difference after separating those figures, gather the COLA notice, the premium or IRMAA information, and the payment amounts for the periods you are comparing. Describe the mismatch specifically when you contact SSA—for example, whether you are asking about the benefit amount, a Part B or Part D deduction, or the income and filing status used for IRMAA. That gives SSA a concrete issue to address.

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Keep the 2026 figures in context

The 2.8% COLA is the 2026 adjustment, and $202.90 is the 2026 standard monthly Part B premium. These are annual figures, not permanent amounts. SSA’s announcement estimated that 75 million Americans receiving Social Security and Supplemental Security Income benefits would see an increase; that is the agency’s estimate, not a count independently verified here.

For an individual beneficiary, the decisive figures are the benefit amount in the official COLA notice, the Medicare deductions that apply, and any other offsets. Those show whether the net payment changed by the amount you expected; the headline COLA percentage alone cannot answer that question.

SSA’s 2025 COLA announcement explains the 2.8% adjustment and its CPI-W basis. SSA’s current Medicare premiums guidance provides the applicable 2026 Part B and IRMAA information, while SSA’s 2026 Medicare publication is an optional further-reading resource. Your own COLA notice and premium determination remain the most direct documents for checking your payment. Recheck the annual figures when SSA publishes later COLA and Medicare premium schedules.

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Frequently Asked Questions

Will my Social Security COLA increase raise my Medicare costs?

Not automatically. The COLA changes the Social Security benefit calculation. Medicare premiums and any applicable IRMAA follow separate rules, although deductions can reduce the net payment you receive.

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How do I check my 2026 Social Security increase?

Open the 2026 COLA notice in the Message Center of your my Social Security account, or use the mailed notice. Compare the benefit amount shown there with your prior benefit amount, then check Medicare deductions and the payment received.

Why did my Social Security deposit go up by less than 2.8%?

The 2.8% COLA is not a promise that the net deposit will rise by the same percentage. Medicare premiums and other applicable offsets are subtracted, so compare the gross benefit amounts and deductions for both periods.

Does Medicare Part B come out of Social Security?

The Part B premium may be withheld from a Social Security benefit. To see its effect on your payment, compare the benefit amount before deductions with the Part B deduction and net payment shown for the period.

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What income is used to determine IRMAA?

SSA uses the most recent federal income tax return it receives from the IRS. Check the income year and filing status SSA used; they may not match your current circumstances.

Can I ask SSA to lower my IRMAA if my income fell?

If income fell because of a qualifying life-changing event, you can ask SSA to review IRMAA using Form SSA-44. A lower current income alone does not establish that the request qualifies, and SSA considers the circumstances under its rules.

Is the 2026 Part B premium $202.90 for everyone?

No. $202.90 is the standard monthly Part B premium for 2026. Some beneficiaries pay more under IRMAA, depending on applicable income rules.

Does the Part B premium include my Part D cost?

No. Part D has a plan premium that varies by plan, and an income-related adjustment may also apply. Check Part D separately from Part B.

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The Bottom Line

To find out how much of the 2026 COLA you keep, compare the gross benefit in your SSA notice with your Part B and Part D charges, any IRMAA, and the net payment received. The 2.8% COLA and the $202.90 standard Part B premium are useful reference figures, but your notices and deductions determine your own result. If IRMAA appears to rely on income that no longer reflects your circumstances, check the return and filing status SSA used and ask about Form SSA-44 if income fell after a qualifying life-changing event.

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