Medicare Decision Guide · Central Florida
Why Is My Medicare Part B Premium Higher Than My Spouse’s?
You and your spouse may both have Medicare Part B, yet one Social Security statement shows a larger deduction. That can feel like a mistake when you file one tax return.
Spouses do not always pay the same Medicare Part B premium. The difference may come from an income-related surcharge, a late-enrollment penalty, different enrollment or billing histories, or financial assistance that pays one spouse’s premium. If you filed a joint tax return, income by itself would generally place both Medicare-enrolled spouses in the same income bracket. Compare the two official notices before assuming income is the reason.
Start With the 2026 Standard Premium
The standard Medicare Part B premium is $202.90 per person per month in 2026. Each person enrolled in Part B owes an individual premium. Some pay more because of income or a late-enrollment penalty; others receive assistance with the cost.
1. One Spouse May Have an Income-Related Surcharge
The Income-Related Monthly Adjustment Amount, usually called IRMAA, is an additional charge for higher-income Medicare beneficiaries. Social Security generally determines the 2026 amount using the federal tax return filed in 2025 for tax year 2024.
For 2026, IRMAA begins when modified adjusted gross income is above $109,000 for an individual tax return or above $218,000 for a married couple filing jointly. The first income tier raises the total Part B premium to $284.10 per person per month. Higher tiers raise it further. IRMAA may also increase Medicare Part D costs.
If both spouses were included on the same joint return and both have Medicare, they would generally be evaluated using the same joint income. If only one deduction is higher, look for another cause or check whether Social Security used different tax information for one spouse.
Married people who file separately and lived together during the tax year face different IRMAA rules. Read the Social Security determination letter carefully.
2. One Spouse May Have a Part B Late-Enrollment Penalty
A spouse who delayed Part B without qualifying for a Special Enrollment Period may owe a lasting penalty. Medicare generally adds 10% of the standard Part B premium for each full 12-month period the person could have enrolled but did not.
Someone who delayed enrollment for two full years without a Special Enrollment Period would generally pay a 20% penalty. A spouse who enrolled on time would not have that charge.
Do not assume that coverage through a retiree plan, COBRA, or another arrangement protected someone from a penalty. Enrollment rules depend on the type of coverage and whether it was based on current employment.
3. The Bills May Look Different Even When the Monthly Premium Is the Same
Most people have Part B deducted monthly from Social Security. Someone who is not receiving Social Security or Railroad Retirement Board benefits may receive a Medicare bill instead. A Part B-only bill is generally issued every three months, so it can appear much larger than a spouse’s single monthly deduction.
A bill may include several months, a past-due amount, or an adjustment. Compare the monthly Part B amount, not merely the bill’s total.
4. You May Be Comparing Different Charges
Other charges may include a Medicare Advantage, Part D, or Medigap premium; Part D IRMAA; or a late-enrollment penalty.
Label each charge before comparing amounts. A spouse with a $0-premium Medicare Advantage plan still owes the Part B premium; another spouse may separately pay for Medigap and Part D.
5. One Spouse May Receive Help Paying the Premium
Florida’s Medicare Savings Programs may help qualifying beneficiaries pay Part B premiums and, in some cases, other Medicare costs. If assistance pays one spouse’s premium but not the other’s, their Social Security deductions can be different.
Confirm current eligibility through Florida’s benefit programs or ask Florida SHINE for free, unbiased Medicare counseling.
What to Check Before Calling
Place both spouses’ documents side by side and compare:
- The monthly Part B premium, not the total bill
- Any Social Security IRMAA determination letter
- The tax year and filing status Social Security used
- Any late-enrollment penalty
- Whether one person receives premium assistance
- Whether another plan premium is being mistaken for Part B
Call Social Security about IRMAA determinations, tax information, appeals, or Part B deductions. Call 1-800-MEDICARE about Medicare billing questions. A licensed Medicare agent can explain plan premiums and coverage choices but cannot change an IRMAA decision or remove a federal late-enrollment penalty.
If Your Income Has Dropped
If an older tax return no longer reflects your income because of retirement, reduced work, marriage, divorce, the death of a spouse, loss of pension income, or another qualifying event, you may request a new IRMAA determination using Form SSA-44. An amended return may also justify a correction.
Do not simply stop paying the higher amount while the request is reviewed. Follow the instructions in the notice and keep copies of the documents you submit.
The Most Useful Next Step
Compare both spouses’ Social Security and Medicare notices line by line. Identify whether the difference is IRMAA, a penalty, billing timing, another insurance premium, or financial assistance. Then contact the agency responsible for that specific charge.
Central Florida residents who want help understanding Medicare choices can use Florida SHINE for free, unbiased counseling or browse our Medicare Advisors directory for local assistance. For plan decisions, read our guide to how Medicare agents get paid and Medicare Open Enrollment Checklist.
Official Sources
- Social Security: Medicare premiums and 2026 IRMAA amounts
- Medicare: Avoid late-enrollment penalties
- Social Security: Request to lower IRMAA
- Medicare: How to pay Part A and Part B premiums
Medical Health Reports provides general educational information, not medical, legal, tax, financial, or insurance advice. Medicare premiums, income thresholds, assistance eligibility, and plan costs may change. Confirm your individual amount with Social Security, Medicare, the applicable plan, or another qualified professional.