2027 Part B Premiums & IRMAA
The Income-Related Monthly Adjustment Amount (IRMAA) adds a surcharge based on 2025 tax-year MAGI for 2027 coverage. That is generally the return filed in 2026. MAGI here means adjusted gross income plus tax-exempt interest.
How these estimates work, including special MFS rules
Read these as two different estimates: premiums and surcharges come from the 2026 CMS Trustees Report, Tables V.E1–V.E4. The lower income thresholds are an editorial 3% inflation illustration: increase the 2026 single thresholds, round to the nearest $1,000, then double for joint filers. They are not final 2027 brackets. The top thresholds remain fixed by law at $500,000 single and $750,000 joint through 2027; their inflation indexing begins in 2028.
Married filing separately: the special MFS column applies if you lived with your spouse at any time in 2025. Its top cutoff is $500,000 minus the single initial threshold: $388,000 in this illustration. MFS taxpayers living apart all year use the single thresholds. The table shows whole-dollar MAGI boundaries; verify final thresholds before making a conversion.
| Single MAGI (2025) | MFJ MAGI (2025) | MFS MAGI (2025) | 2027 Estimated / Projected Total Monthly |
|---|---|---|---|
| $112,000 or less | $224,000 or less | $112,000 or less | $209.50 (CMS estimate; final pending) |
| $112,001 – $141,000 | $224,001 – $282,000 | N/A | $293.20 (+$83.70 CMS estimated surcharge) |
| $141,001 – $176,000 | $282,001 – $352,000 | N/A | $418.90 (+$209.40 CMS estimated surcharge) |
| $176,001 – $211,000 | $352,001 – $422,000 | N/A | $544.60 (+$335.10 CMS estimated surcharge) |
| $211,001 – $499,999 | $422,001 – $749,999 | $112,001 – $387,999 | $670.20 (+$460.70 CMS estimated surcharge) |
| $500,000 or more | $750,000 or more | $388,000 or more | $712.10 (+$502.60 CMS estimated surcharge) |
2027 Part A Hospital & Skilled Nursing Costs (Projected)
| Inpatient Coverage Category | 2027 Projected Cost | 2026 Confirmed |
|---|---|---|
| Inpatient Hospital Deductible (per benefit period) | ~$1,788 | $1,736 |
| Hospital Days 1–60 Coinsurance | $0/day | $0/day |
| Hospital Days 61–90 Coinsurance | ~$447/day | $434/day |
| Hospital Lifetime Reserve Days 91–150 | ~$894/day | $868/day |
| Skilled Nursing Facility (SNF) Days 1–20 | $0/day | $0/day |
| Skilled Nursing Facility (SNF) Days 21–100 | ~$223.50/day | $217.00/day |
Confirmed 2027 Part D amounts: the standard benefit’s maximum deductible is $700 and the annual out-of-pocket threshold is $2,400 for covered Part D drugs. CMS has also announced a $41.33 base beneficiary premium, a program calculation amount—not a quote for your plan. Your actual plan premium, formulary, and pharmacy costs vary; compare the plan’s annual notice of change. See CMS’s July 28, 2026 announcement and the Trustees report, Table V.E1.
2027 Part D Prescription Drug IRMAA Surcharges (Projected)
| Single MAGI (2025) | MFJ MAGI (2025) | 2027 Projected Monthly Surcharge | 2026 Confirmed |
|---|---|---|---|
| $112,000 or less | $224,000 or less | $0.00 | $0.00 |
| $112,001 – $141,000 | $224,001 – $282,000 | $15.40 | $14.50 |
| $141,001 – $176,000 | $282,001 – $352,000 | $39.70 | $37.50 |
| $176,001 – $211,000 | $352,001 – $422,000 | $64.00 | $60.40 |
| $211,001 – $499,999 | $422,001 – $749,999 | $88.30 | $83.30 |
| $500,000 or more | $750,000 or more | $96.40 | $91.00 |
Explore Medicare costs using the calculator’s supported 2026 figures. It does not yet apply the 2027 estimates on this page.
Open Medicare Premium Calculator →What Changed From 2026: Side-by-Side Summary
The table below summarizes projected 2027 Medicare premium and deductible levels compared with confirmed 2026 figures from CMS.
| Medicare Program Metric | 2026 Confirmed | 2027 Figure | Change |
|---|---|---|---|
| Part B Standard Premium (Monthly) | $202.90 | $209.50 CMS estimate | ↑ +$6.60 (+3.3%) |
| Part B Annual Deductible | $283 | $292 CMS estimate | ↑ +$9 (+3.2%) |
| Part A Inpatient Hospital Deductible | $1,736 | ~$1,788 projected | ↑ +$52 (+3.0%) |
| IRMAA Tier 1 Threshold (Single) | $109,000 | ~$112,000 projected | ↑ +$3,000 (+2.8%) |
| IRMAA Tier 1 Threshold (MFJ) | $218,000 | $224,000 projected | ↑ +$6,000 (+2.8%) |
| Top IRMAA Part B Total (Monthly) | $689.90 | $712.10 projected | ↑ +$22.20 (+3.2%) |
2026 vs 2027 Medicare Part B & Part A Costs
| Metric | 2026 | 2027 Estimate / Projection |
|---|---|---|
| Part B Standard (Monthly) | $202.9 | $209.5 CMS estimate |
| Part B Deductible (Annual) | $283 | $292 |
| Part A Hospital Deductible | $1,736 | $1,788 |
Worked Example: Married Couple Triggering IRMAA Tier 2 via Roth Conversion
Consider Robert and Linda, married Medicare beneficiaries in 2027. In 2025, Robert completed a $100,000 Roth IRA conversion, pushing their 2025 joint MAGI to $300,000:
- Determine IRMAA Tier: With a 2025 MAGI of $300,000, they fall into IRMAA Tier 2 (illustrative $282,001 – $352,000 MFJ).
- Calculate Part B Surcharge per Person: Tier 2 is
$418.90/mo($209.50 CMS estimate + $209.40 CMS estimated surcharge) vs the estimated standard $209.50.
Extra monthly surcharge:$209.40 × 2 spouses = $418.80/mo ($5,025.60/yr). - Calculate Part D Surcharge per Person: CMS estimated Tier 2 Part D surcharge is
$39.70/moper person.
Extra monthly cost:$39.70 × 2 spouses = $79.40/mo ($952.80/yr). - Total Annual IRMAA Surcharge:
$5,025.60 + $952.80 = $5,978.40in extra Medicare costs in 2027. - Life-Changing Event Appeal Option: If Robert retired in late 2026, dropping their ongoing 2027 income back down to $120,000, they can request a new determination using Form SSA-44 and evidence of retirement and lower income. SSA decides whether the new income estimate qualifies them for lower premiums. A Roth conversion by itself is not a qualifying life-changing event.
Result: In this scenario, a $100,000 conversion adds an estimated $5,978.40 to the couple’s annual Medicare premiums two years later, assuming both have Part B and Part D all year. This is the surcharge only; their standard Part B and private drug-plan premiums are additional.
Who This Affects — and Who It Doesn't
- Medicare Beneficiaries: Part B premiums are generally deducted from Social Security, or billed separately if you do not receive those benefits.
- Higher-Income Beneficiaries (Above the Illustrated $112k Single / $224k Joint Cutoffs): Subject to monthly IRMAA surcharges on Parts B and D.
- Retirees Doing Roth Conversions: Conversions increase MAGI and trigger IRMAA 2 years later.
- Inpatient Hospital Patients: Responsible for the projected ~$1,788 Part A deductible per benefit period.
- Individuals Under 65 Without Qualifying Disability: Not yet eligible or enrolled in Medicare.
- Beneficiaries Below IRMAA Thresholds: MAGI at or below the illustrated $112,000 single or $224,000 joint thresholds has no IRMAA surcharge; final thresholds are pending.
- Active Workers with Employer Group Coverage: Can defer Part B enrollment without late penalties if employer has 20+ employees.
- Medicaid / Medicare Savings Program Beneficiaries: QMB can cover premiums and Medicare cost sharing; SLMB and QI help with Part B premiums. Eligibility and benefits differ.
IRMAA Planning Strategies for 2027
1. Manage IRMAA Cliff Thresholds: Because IRMAA uses strict dollar cliffs, earning $1 over a threshold triggers the full annual surcharge. Monitor capital gains, IRA distributions, and interest to stay below tier boundaries.
2. File Form SSA-44 for Life-Changing Events: If your income decreased due to retirement, marriage, divorce, loss of pension, or property destruction, request an SSA review using Form SSA-44 and evidence of a qualifying event and reduced income. A reduction is not automatic.
3. Use Qualified Charitable Distributions (QCDs): If you are age 70½ or older, make an eligible direct IRA transfer to charity up to the applicable annual QCD limit ($111,000 confirmed for 2026; the indexed 2027 limit is pending; see the Congressional Research Service QCD reference). A qualifying QCD can count toward an RMD without increasing AGI. Verify recipient eligibility and the annual limit before transferring funds.
Income-tier rules: Social Security Act §1839(i), including frozen upper thresholds and the separate-filer formula. Sources: 2026 Medicare Trustees Report (Tables V.E1–V.E4: Part B premium and deductible, Part A cost sharing, and Part B/Part D surcharges), the CMS 2027 ratebook and supporting data (published 2027 Medicare Advantage material), CMS 2026 Parts A & B fact sheet, and SSA POMS HI 01101.020 (IRMAA sliding scales). The final 2027 Part B, Part A, and IRMAA amounts remain pending; premium figures use CMS estimates and lower income thresholds use the disclosed editorial illustration.
Frequently Asked Questions
What is the projected standard Medicare Part B monthly premium for 2027?
The CMS Trustees’ 2026 intermediate estimate for the 2027 standard Medicare Part B monthly premium is $209.50, up from the confirmed $202.90 amount in 2026. CMS’s final 2027 Part B premium is still pending.
What is IRMAA and how is it calculated for 2027?
IRMAA (Income-Related Monthly Adjustment Amount) is a surcharge added to Part B and Part D premiums for higher-income beneficiaries based on tax returns from two years prior (2025 tax return for 2027 premiums).
What is the projected Medicare Part B annual deductible for 2027?
The CMS Trustees’ intermediate estimate for the 2027 Part B annual deductible is $292, up from the confirmed $283 in 2026. The final 2027 deductible is pending.
What is the projected Medicare Part A hospital deductible for 2027?
The projected 2027 Medicare Part A inpatient hospital deductible is approximately $1,788 per benefit period, up from $1,736 in 2026.
How does the two-year lookback rule work for Medicare IRMAA?
For 2027 premiums, SSA generally uses your 2025 tax-year MAGI (AGI plus tax-exempt interest), usually reported on the return filed in 2026. If that return is unavailable, SSA may initially use older tax information; a qualifying life-changing event may support a new determination.
Can I appeal my 2027 IRMAA surcharge if my income dropped?
Yes. You can file Form SSA-44 (Medicare Income-Related Monthly Adjustment Amount - Life-Changing Event) if you experienced retirement, work reduction, divorce, or the death of a spouse.
What is the top projected IRMAA tier for Part B in 2027?
The top thresholds are $500,000 or more single and $750,000 or more jointly; they remain fixed through 2027. The CMS Trustees’ intermediate estimate is $712.10 per month for Part B: $209.50 standard premium plus a $502.60 surcharge. Final 2027 premiums remain pending.
Does IRMAA apply to Medicare Advantage (Part C) plans?
Yes. Medicare Advantage enrollees still pay their standard Part B premium plus any applicable Part B and Part D IRMAA surcharges directly to Medicare.
What is the Medicare 'Hold Harmless' provision?
The Hold Harmless rule protects existing beneficiaries by preventing an increase in Part B premiums from reducing their net monthly Social Security benefit payment below the prior year's level.
Who is exempt from the Hold Harmless provision?
Hold Harmless does not protect high earners subject to IRMAA, new Medicare enrollees, or beneficiaries who do not have Part B premiums deducted directly from Social Security.
How does a Roth IRA conversion trigger an IRMAA surcharge cliff?
Because IRMAA uses sharp bracket cliffs, having your MAGI exceed an IRMAA threshold by even $1 triggers the full annual surcharge tier for both Part B and Part D.
Are Medicare Part D prescription drug surcharges separate from Part B?
Yes. Part D IRMAA is an extra monthly surcharge (CMS Trustees estimate: $15.40 to $96.40/mo) paid directly to Medicare on top of your private plan premium.
How is Modified AGI calculated for Medicare IRMAA purposes?
IRMAA MAGI is your IRS Adjusted Gross Income (Form 1040 line 11) PLUS any tax-exempt municipal interest (Form 1040 line 2a).
Can HSA funds pay for Medicare premiums in retirement?
Yes. After turning age 65, HSA withdrawals can pay 100% tax-free for Medicare Part B, Part D, and Medicare Advantage premiums (though not Medigap policies).
Which 2027 Medicare figures are already published, and what is still pending?
CMS has published 2027 Medicare Advantage materials and announced Part D premium information on July 28, 2026. The 2026 Medicare Trustees Report provides the $209.50 intermediate estimate for the 2027 standard Part B premium. Final 2027 Part A, Part B, and IRMAA amounts remain pending their official release.
What are the projected daily hospital coinsurance charges for days 61-90 in 2027?
Under Part A, days 1–60 in a hospital carry a $0 daily coinsurance after the deductible. Days 61–90 are projected at ~$447 per day in 2027.
Use the calculator for a 2026 reference; return to these tables for clearly labeled 2027 planning estimates.
Launch Medicare Premium Calculator →Explore All 2027 Reference Hubs
How this page is reviewed
See methodology, assumptions & sources
| Risk tier | High YMYL |
|---|---|
| Author | Calculover Editorial Team Finance and legal education |
| Editorial owner | Calculover Tax & Payroll Desk Tax and wage methodology owner |
| Reviewer | Calculover Editorial Review High-risk source and limitation review |
| Status | Official estimate |
| Source as of | 2026-09-07 |
| Last reviewed | 2026-09-07 |
| Last verified | 2026-09-07 |
| Next review date | 2026-11-15 |
| Expected release | Final Part A/Part B premiums and IRMAA amounts: expected November 2026. The Part D base beneficiary premium is a separate published figure. |
| Projection method | Part A/B cost amounts and Part B/D IRMAA surcharges use the 2026 CMS Trustees’ intermediate estimates, including $209.50 Part B and a $292 deductible. Income thresholds below the fixed $500,000/$750,000 top tier are illustrative projections; final CMS amounts supersede estimates. |
| Data effective date | 2027-01-01 |
Methodology
Part A/B cost amounts and Part B/D IRMAA surcharges use the 2026 CMS Trustees’ intermediate estimates, including $209.50 Part B and a $292 deductible. Income thresholds below the fixed $500,000/$750,000 top tier are illustrative projections; final CMS amounts supersede estimates.
Assumptions
- This is a reference article with fixed worked examples. Assumptions are stated beside each example; the page does not collect or verify personal financial inputs.
- Agency estimates and editorial scenarios are labeled separately from confirmed rules and must not be treated as final 2027 filing amounts.
- Linked calculators may support a different tax year; their displayed year and assumptions control their results.
Limitations
- The examples do not determine an individual’s final liability, benefit, eligibility or optimal financial decision. State rules and personal circumstances may change the result.
- Check the current primary-source release and applicable year before making a contribution, filing a return, or changing benefits.
Sources
- 2026 Medicare Trustees Report, tables V.E1–V.E4, Centers for Medicare & Medicaid Services
- IRMAA statutory thresholds — Social Security Act §1839, Social Security Administration
- 2027 Part D announcement, Centers for Medicare & Medicaid Services
Professional guidance: 2027 Medicare Premiums, Deductibles & IRMAA Surcharges (Projected) is for tax education and planning only and is not tax, legal, accounting, or filing advice. Verify current rules with the relevant tax authority or a qualified tax professional.