Dividend Income and Medicare IRMAA: How Dividends Affect Your Premiums

Dividend income — whether from stocks, ETFs, REITs, or bond funds — counts in full toward your IRMAA MAGI, regardless of the federal tax rate applied to it. A retiree with $95,000 in Social Security and pension income who earns $16,000 in annual dividends crosses the first 2026 IRMAA threshold and pays an extra $1,148/year in Medicare premiums. REIT dividends and muni-bond fund distributions add up faster than most people expect.

How dividend income enters IRMAA MAGI

IRMAA MAGI = AGI (Form 1040, Line 11) + tax-exempt interest (Line 2a). Dividend income flows into AGI regardless of whether it's taxed at ordinary rates or preferential qualified-dividend rates. Medicare does not offer a lower-bracket equivalent of the 0%/15%/20% capital gains rate structure. A dollar of dividend income is a dollar of MAGI.²

The two-year look-back means dividends earned in 2024 determine your 2026 Medicare Part B and Part D premiums. High-dividend years two years ago have current consequences.

Dividend types mapped to IRMAA MAGI

The REIT dividend QBI trap

Many retirees hold REIT ETFs (VNQ, SCHH, etc.) for yield and assume the 20% § 199A qualified business income deduction reduces their Medicare exposure. It does not. The QBI deduction is taken on Form 1040 Line 13 — it reduces taxable income below AGI, not AGI itself. IRMAA starts from AGI. A retiree earning $30,000 in REIT dividends gets a $6,000 QBI deduction that saves ~$2,200 in federal income tax but does nothing for IRMAA MAGI.³

REIT dividends are also predominantly ordinary income. Most REIT distributions are classified as Section 199A dividends (ordinary income eligible for QBI deduction) rather than qualified dividends. Funds like VNQ typically report 70–90% of distributions as ordinary/199A, a small portion as return of capital, and little if any as qualified dividends. The effective IRMAA impact is similar to pension or IRA withdrawal income — dollar-for-dollar MAGI.

The muni bond fund double-count

Retirees holding municipal bond funds to avoid federal income tax are sometimes surprised to learn those dividends still trigger IRMAA. The MAGI formula explicitly adds tax-exempt interest back to AGI. A retiree with $100,000 in a muni bond fund yielding 4% earns $4,000 in tax-exempt dividends — $0 in federal income tax, but $4,000 more IRMAA MAGI.⁴

NIIT stacking: dividends trigger a second tax above $200K

For single filers above $200,000 MAGI ($250,000 for married filing jointly), dividends may trigger the 3.8% Net Investment Income Tax (NIIT) in addition to IRMAA surcharges. NIIT applies to the lesser of net investment income or the excess of MAGI over the threshold. Dividends count for both NIIT and IRMAA — meaning a large dividend year near the IRMAA tier thresholds can simultaneously push up your Medicare premium and your NIIT liability.⁵

IRMAA tier calculator — dividend income

Enter your other income, annual dividends, and any tax-exempt muni fund dividends to see your IRMAA tier for 2026 (based on 2024 MAGI). Single filer basis; double thresholds for married filing jointly.

Worked example: Howard, 68, retired engineer

Howard retired in 2023 with a $72,000/year pension, $18,000 Social Security, and a $900,000 taxable brokerage account yielding 3.5% — roughly $31,500 in annual dividends, split between a S&P 500 index fund (mostly qualified dividends) and a REIT ETF (mostly ordinary/199A dividends). He also holds $150,000 in a muni bond fund for "tax-free" income, yielding 3.8% = $5,700/year in tax-exempt dividends.

Howard's 2024 MAGI calculation:

• Pension: $72,000
• SS taxable portion (85% rule): $15,300
• Dividends (taxable): $31,500
• Muni fund dividends (added back): $5,700
• IRMAA MAGI: $124,500 → Tier 1

Howard pays $1,148/year in IRMAA surcharges on his 2026 premiums — not because his pension and Social Security pushed him over the $109,000 threshold, but because his portfolio income closed the gap. The muni bond fund alone added $5,700 to MAGI that he believed was shielded from all taxes. If Howard's REIT allocation pays out more than expected, or the S&P fund makes a year-end capital gain distribution, he could slip into Tier 2 and pay $2,885/year.

5 strategies to manage dividend IRMAA

1. Asset location: hold high-yield assets inside tax-advantaged accounts

Move dividend-heavy investments — especially REITs, bond funds, and high-yield ETFs — into IRAs or 401(k)s where dividends don't appear on Form 1040 until withdrawn. Low/no-dividend investments (growth stocks, municipal bonds held directly) belong in the taxable account. This is the single highest-leverage tool because it permanently excludes dividends from MAGI rather than just offsetting them.⁶

2. Switch to growth-oriented or lower-yield equity ETFs in taxable accounts

Total-market or growth-tilt index ETFs (lower dividend yield, more appreciation) generate less annual dividend income in taxable accounts. Gains are deferred until sale, giving you control over timing — unlike dividends, which distribute automatically. A shift from a 2.5%-yield ETF to a 1.0%-yield ETF on a $500,000 holding cuts annual dividend MAGI by $7,500.

3. Qualified Charitable Distributions to offset dividend MAGI

If you're 70½ or older with an IRA, QCDs of up to $111,000/person in 2026 reduce your AGI directly — unlike deductible charitable donations, which only reduce taxable income. A $15,000 QCD offsets $15,000 in dividend income for IRMAA purposes. QCDs can't offset dividends from a taxable account, but they can reduce other income to create room for dividends to stay under a tier threshold.⁷

4. Rethink muni bond funds — own individual munis instead

Individual municipal bonds held directly pay tax-exempt interest, which is still added back to IRMAA MAGI. However, switching from a muni fund to individual munis doesn't change IRMAA treatment for income. The real opportunity: if the goal is IRMAA reduction, total-return bonds held inside an IRA (generating no current taxable income) beats muni funds in a taxable account for retirees above the IRMAA threshold.

5. Two-year look-back planning: model 2024 dividends now for 2026 IRMAA

Because 2026 IRMAA is set by 2024 income, any changes made today affect your 2028 premiums (based on 2026 income). If 2024 was a high-dividend year and you're now getting an IRMAA surcharge, explore whether the SSA used the correct data. If the surcharge is legitimate, use the two-year window to restructure your portfolio so 2026 dividends are lower — reducing 2028 IRMAA. Asset location changes take effect immediately for the current tax year.

Should you reduce dividends or just pay the IRMAA?

For many retirees, the IRMAA surcharge at Tier 1 ($1,148/year) costs less than the tax inefficiency or transaction costs of restructuring a portfolio. Asset location is worth doing for other reasons too (tax-deferred compounding); the IRMAA benefit is a bonus. But for retirees sitting near a tier boundary — especially with large REIT or high-yield bond allocations in taxable accounts — a relatively modest asset shift can avoid thousands of dollars per year in surcharges. The math deserves explicit modeling with a fee-only advisor who understands both portfolio and Medicare planning.