Mississippi Social Security Part B Premium Deduction: How to Stop It

Every month, Social Security may deduct $202.90 from your parent's check before they see a dime. That's the 2026 standard Medicare Part B premium. Part B is voluntary; for most people enrolled in Part B and receiving Social Security, SSA withholds the premium automatically. For a Mississippi senior living on $1,300/month in Social Security, that single deduction takes more than 15% of their income.

If your parent wants to keep Part B without paying the premium themselves, a Medicare Savings Program may cover it. Here's how the process works and what to expect.

Why the Deduction Exists

Medicare Part B covers doctor visits, outpatient care, preventive services, and durable medical equipment. Unlike Part A (which most people get premium-free), Part B requires a monthly premium. For most beneficiaries, SSA deducts it directly from the Social Security payment. The beneficiary never sees the money — their monthly deposit is already reduced.

In 2026, the standard Part B premium is $202.90/month. That's $2,434.80/year. For higher-income beneficiaries, income-related surcharges (IRMAA) push it even higher, but most low-income Mississippi seniors pay the standard amount.

The problem is that for someone living on a fixed income near or below the poverty line, this deduction creates an impossible squeeze. A monthly Social Security benefit of $1,400 becomes $1,197.10 after Part B. Add rent, utilities, food, and medications, and there's nothing left.

How Medicare Savings Programs Stop the Deduction

When DOM approves a QMB, SLMB, or QI application, the state takes over paying the Part B premium. The sequence:

1. DOM issues the approval notice (Form DOM-301) with the effective date
2. DOM transmits a buy-in file to CMS and SSA, telling them Mississippi is now paying this beneficiary's Part B premium
3. SSA updates the Master Beneficiary Record to reflect state buy-in
4. SSA stops the monthly deduction — the full Social Security amount starts appearing in the beneficiary's check
5. SSA issues a retroactive refund for any premiums deducted after the MSP effective date

The end result: your parent's monthly Social Security payment increases by $202.90. Over a year, that's $2,434.80 back in their pocket.

The Lag: Why Deductions Continue After Approval

Here's the part that frustrates families. Even after DOM sends the approval letter, allow about 4 to 6 weeks for the Part B buy-in to process. During that lag, SSA may keep deducting the Part B premium because the buy-in file hasn't been processed yet.

This is normal. It's not a sign that the application was denied or that something went wrong. It's a data exchange between a state agency and a federal agency that processes on its own schedule.

What to watch for:

• Month 1–2 after approval: deductions may continue. This is expected.
• Month 3 after approval: if deductions are still happening, call SSA at 1-800-772-1213 and ask about the status of the state buy-in. Have the DOM approval notice handy.
• The refund check: once SSA processes the buy-in, they issue a lump-sum refund covering every premium deducted after the MSP effective date. If QMB was effective April 1 and SSA processes the buy-in in June, the April and May premiums ($405.80) are refunded.

Special Cases: Direct-Pay and Railroad Retirement

Not every beneficiary has Part B deducted from Social Security:

Direct-pay beneficiaries: some people pay CMS directly via quarterly invoices (usually because they're not yet receiving Social Security payments). Once the MSP is approved and the buy-in processes, CMS stops sending invoices and issues a credit or refund for any overpayment.

Railroad Retirement Board (RRB) beneficiaries: seniors who receive railroad retirement pensions instead of Social Security have Part B deducted by the RRB. The buy-in process works similarly, but the refund comes from RRB, not SSA. Processing can take slightly longer.

What QMB Covers Beyond the Part B Premium

If your parent qualifies for QMB (2026 individual income below $1,380/month, a state-published limit that reflects Mississippi's $50 general income exclusion), the savings go far beyond the premium:

• Part B premium: $202.90/month → $0
• Part A premium (if applicable): up to $565/month ($311 for 30–39 quarters) → $0
• Part B annual deductible: $283 → $0
• Part A inpatient deductible: $1,736 per benefit period → $0
• All copays and coinsurance: → $0

SLMB and QI cover only the Part B premium — no deductibles or cost-sharing. But even that single benefit saves $2,434.80/year.

All three programs also trigger automatic Full Extra Help for Part D prescriptions, adding $0 drug plan premiums and reduced medication copays.

Tracking the Refund

After DOM approves the MSP, track the refund using these checkpoints:

1. Save a copy of the DOM-301 approval notice — it documents the effective date
2. Note the gross Social Security amount and the net deposit for each month after approval — the gap is the Part B deduction
3. When the refund arrives, verify the amount matches: $202.90 × number of months between the effective date and when deductions stopped
4. If the refund is short, call SSA with the DOM-301 showing the effective date — discrepancies usually mean SSA used a later processing date instead of the actual effective date

The Mississippi Medicare Savings Programs & Extra Help Guide includes a premium refund tracking worksheet and the phone scripts for resolving refund discrepancies with SSA — plus the full application process to get to approval in the first place.

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