databutler.dev · /facts — every fact · Verified Facts protocol · /.well-known/facts.json · /changes
[{"magiAtMost":218000,"partBAdjustment":0,"partBTotalPremium":202.9,"partDAdjustment":0},{"magiOver":218000,"magiAtMost":274000,"partBAdjustment":81.2,"partBTotalPremium":284.1,"partDAdjustment":14.5},{"magiOver":274000,"magiAtMost":342000,"partBAdjustment":202.9,"partBTotalPremium":405.8,"partDAdjustment":37.5},{"magiOver":342000,"magiAtMost":410000,"partBAdjustment":324.6,"partBTotalPremium":527.5,"partDAdjustment":60.4},{"magiOver":410000,"magiLessThan":750000,"partBAdjustment":446.3,"partBTotalPremium":649.2,"partDAdjustment":83.3},{"magiAtLeast":750000,"partBAdjustment":487,"partBTotalPremium":689.9,"partDAdjustment":91}] USD/month by MAGI row (partBAdjustment, partBTotalPremium; partDAdjustment is added to the plan premium)
2026, from 2026-01-01 · verified 2026-10-31 against the official source · next expected change 2027-01-01
Less than or equal to $218,000: $0.00, $202.90; Greater than $218,000 and less than or equal to $274,000: $81.20, $284.10; ... to $342,000: $202.90, $405.80; ... to $410,000: $324.60, $527.50; Greater than $410,000 and less than $750,000: $446.30, $649.20; Greater than or equal to $750,000: $487.00, $689.90. Part D: $0.00, $14.50, $37.50, $60.40, $83.30, $91.00.
us/medicare-costs/irmaa-joint-returnsha256:bd74fbb76827887b734a924e2b62372c0884656773c752fc13a8dc1f9a668caadb-2026-10 — keyscurl -s https://databutler.dev/f/us/medicare-costs/irmaa-joint-return?max_age=30d — schema; verify with npx verified-facts verify https://databutler.dev/f/us/medicare-costs/irmaa-joint-return
{
"protocol": "verified-facts/0.3",
"key": "us/medicare-costs/irmaa-joint-return",
"label": "IRMAA 2026: beneficiaries who file joint tax returns, full Part B coverage and Part D",
"value": [
{
"magiAtMost": 218000,
"partBAdjustment": 0,
"partBTotalPremium": 202.9,
"partDAdjustment": 0
},
{
"magiOver": 218000,
"magiAtMost": 274000,
"partBAdjustment": 81.2,
"partBTotalPremium": 284.1,
"partDAdjustment": 14.5
},
{
"magiOver": 274000,
"magiAtMost": 342000,
"partBAdjustment": 202.9,
"partBTotalPremium": 405.8,
"partDAdjustment": 37.5
},
{
"magiOver": 342000,
"magiAtMost": 410000,
"partBAdjustment": 324.6,
"partBTotalPremium": 527.5,
"partDAdjustment": 60.4
},
{
"magiOver": 410000,
"magiLessThan": 750000,
"partBAdjustment": 446.3,
"partBTotalPremium": 649.2,
"partDAdjustment": 83.3
},
{
"magiAtLeast": 750000,
"partBAdjustment": 487,
"partBTotalPremium": 689.9,
"partDAdjustment": 91
}
],
"unit": "USD/month by MAGI row (partBAdjustment, partBTotalPremium; partDAdjustment is added to the plan premium)",
"period": "2026",
"effectiveFrom": "2026-01-01",
"effectiveTo": null,
"source": "https://www.cms.gov/newsroom/fact-sheets/2026-medicare-parts-b-premiums-deductibles",
"quote": "Less than or equal to $218,000: $0.00, $202.90; Greater than $218,000 and less than or equal to $274,000: $81.20, $284.10; ... to $342,000: $202.90, $405.80; ... to $410,000: $324.60, $527.50; Greater than $410,000 and less than $750,000: $446.30, $649.20; Greater than or equal to $750,000: $487.00, $689.90. Part D: $0.00, $14.50, $37.50, $60.40, $83.30, $91.00.",
"verifiedDate": "2026-10-31",
"nextScheduledRefresh": "2026-11-01",
"changeCadence": "annual",
"nextExpectedChange": "2027-01-01",
"sourceCheckedAt": "2026-11-02",
"status": "fresh",
"ageDays": 6,
"maxAgeDays": null,
"scope": "Beneficiary costs for calendar 2026, distinct from the medicare category (payroll tax). IRMAA rows are read against MAGI from the tax return Social Security uses, generally two years earlier. CMS had not published 2027 amounts on 2026-10-31.",
"hash": "sha256:bd74fbb76827887b734a924e2b62372c0884656773c752fc13a8dc1f9a668caa",
"signature": {
"alg": "EdDSA",
"kid": "db-2026-10",
"jws": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRiLTIwMjYtMTAifQ..a9AoH-2_hR-ilu5y2fIASe9hAdkrXYMAZ4dZhnasS_I0ucd9qqbi4UJfb09SZxFIAZZcRr8BCQPRudCOmC8gCA",
"keys": "https://databutler.dev/.well-known/jwks.json"
},
"publisher": {
"name": "Data Butler",
"url": "https://databutler.dev/"
},
"cite": {
"url": "https://databutler.dev/facts/us/medicare-costs/irmaa-joint-return",
"text": "databutler.dev, verified 2026-10-31 against https://www.cms.gov/newsroom/fact-sheets/2026-medicare-parts-b-premiums-deductibles"
}
}