{
  "version": "2026.1",
  "generated_by": "scripts/gen_widows_penalty_study.mjs — every figure computed through the shared 2026 calc engine (federal-tax-2026.js ssTaxableAmount/ordinaryTax/additionalAgedDeduction/seniorDeduction, irmaa.js annualSurcharge, rmd.js factor), the same parity-tested functions behind the live /widowhood/ calculator; 7 sanity-gate families + 3 mutation runs + 17 live-page assertions green at generation time",
  "source": "IRC §6013(a)(3) (year-of-death joint return), IRC §2(a) (qualifying surviving spouse — requires a dependent child), IRC §86(c) (SS-taxability base amounts), 42 U.S.C. §1395r(i)(2)(B) (joint IRMAA thresholds = twice the single amounts) and §1395r(i)(4) (IRMAA MAGI); 2026 brackets, deductions, IRMAA tiers and the Uniform Lifetime Table from QuantCalc's shared calc modules",
  "law_basis": "Current-law 2026 constants throughout, including the OBBBA §70103 senior deduction (tax years 2025–2028). §86(c) thresholds are not indexed. IRMAA premiums for a year are set from MAGI two years prior, at that return's filing status.",
  "generated_at": "2026-08-15T04:37:22.056Z",
  "row_count": 488,
  "grid": {
    "age": 75,
    "ss_higher_levels": [
      24000,
      30000,
      36000,
      40000
    ],
    "lower_benefit_ratios": [
      0.5,
      1
    ],
    "other_income": {
      "from": 0,
      "to": 150000,
      "step": 2500
    },
    "deductions": "standard deduction incl. the age-65+ addition and the OBBBA senior deduction (same convention as the live /widowhood/ calculator)",
    "survivor_income": "larger Social Security check + ALL non-SS ordinary income (pension continues at 100%, RMDs continue after a spousal rollover)",
    "decomposition": "tax_change = filing_status_penalty (single vs joint at the SURVIVOR's income) + income_effect (joint tax at survivor income vs joint tax at couple income)"
  },
  "fields": [
    "ss_higher",
    "ss_lower",
    "other_income",
    "couple_cash",
    "survivor_cash",
    "survivor_cash_share_pct",
    "couple_ss_taxable",
    "couple_ss_taxable_pct",
    "couple_agi",
    "couple_deduction",
    "couple_taxable",
    "couple_tax",
    "couple_marginal",
    "couple_eff_pct",
    "couple_irmaa_per_person",
    "survivor_ss_taxable",
    "survivor_ss_taxable_pct",
    "survivor_agi",
    "survivor_deduction",
    "survivor_taxable",
    "survivor_tax",
    "survivor_marginal",
    "survivor_eff_pct",
    "survivor_irmaa_per_person",
    "tax_change",
    "tax_change_pct",
    "filing_status_penalty",
    "income_effect"
  ],
  "rows": [
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      "couple_cash": 36000,
      "survivor_cash": 24000,
      "survivor_cash_share_pct": 66.7,
      "couple_ss_taxable": 0,
      "couple_ss_taxable_pct": 0,
      "couple_agi": 0,
      "couple_deduction": 47500,
      "couple_taxable": 0,
      "couple_tax": 0,
      "couple_marginal": 0.1,
      "couple_eff_pct": 0,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 0,
      "survivor_ss_taxable_pct": 0,
      "survivor_agi": 0,
      "survivor_deduction": 24150,
      "survivor_taxable": 0,
      "survivor_tax": 0,
      "survivor_marginal": 0.1,
      "survivor_eff_pct": 0,
      "survivor_irmaa_per_person": 0,
      "tax_change": 0,
      "tax_change_pct": null,
      "filing_status_penalty": 0,
      "income_effect": 0
    },
    {
      "ss_higher": 24000,
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      "other_income": 2500,
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      "survivor_cash": 26500,
      "survivor_cash_share_pct": 68.8,
      "couple_ss_taxable": 0,
      "couple_ss_taxable_pct": 0,
      "couple_agi": 2500,
      "couple_deduction": 47500,
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      "survivor_eff_pct": 15.1,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3502.4,
      "tax_change_pct": 18,
      "filing_status_penalty": 11607.6,
      "income_effect": -8105.2
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 115000,
      "couple_cash": 195000,
      "survivor_cash": 155000,
      "survivor_cash_share_pct": 79.5,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 183000,
      "couple_deduction": 43540,
      "couple_taxable": 139460,
      "couple_tax": 20105.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 10.3,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 149000,
      "survivor_deduction": 19710,
      "survivor_taxable": 129290,
      "survivor_tax": 23627.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 15.2,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3522.4,
      "tax_change_pct": 17.5,
      "filing_status_penalty": 11873.6,
      "income_effect": -8351.2
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 117500,
      "couple_cash": 197500,
      "survivor_cash": 157500,
      "survivor_cash_share_pct": 79.7,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 185500,
      "couple_deduction": 43240,
      "couple_taxable": 142260,
      "couple_tax": 20721.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 10.5,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 151500,
      "survivor_deduction": 19560,
      "survivor_taxable": 131940,
      "survivor_tax": 24263.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 15.4,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3542.4,
      "tax_change_pct": 17.1,
      "filing_status_penalty": 11920,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
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      "couple_cash": 200000,
      "survivor_cash": 160000,
      "survivor_cash_share_pct": 80,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 188000,
      "couple_deduction": 42940,
      "couple_taxable": 145060,
      "couple_tax": 21337.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 10.7,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 154000,
      "survivor_deduction": 19410,
      "survivor_taxable": 134590,
      "survivor_tax": 24899.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 15.6,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3562.4,
      "tax_change_pct": 16.7,
      "filing_status_penalty": 11940,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 122500,
      "couple_cash": 202500,
      "survivor_cash": 162500,
      "survivor_cash_share_pct": 80.2,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 190500,
      "couple_deduction": 42640,
      "couple_taxable": 147860,
      "couple_tax": 21953.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 10.8,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 156500,
      "survivor_deduction": 19260,
      "survivor_taxable": 137240,
      "survivor_tax": 25535.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 15.7,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3582.4,
      "tax_change_pct": 16.3,
      "filing_status_penalty": 11960,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 125000,
      "couple_cash": 205000,
      "survivor_cash": 165000,
      "survivor_cash_share_pct": 80.5,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 193000,
      "couple_deduction": 42340,
      "couple_taxable": 150660,
      "couple_tax": 22569.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 11,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 159000,
      "survivor_deduction": 19110,
      "survivor_taxable": 139890,
      "survivor_tax": 26171.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 15.9,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3602.4,
      "tax_change_pct": 16,
      "filing_status_penalty": 11980,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 127500,
      "couple_cash": 207500,
      "survivor_cash": 167500,
      "survivor_cash_share_pct": 80.7,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 195500,
      "couple_deduction": 42040,
      "couple_taxable": 153460,
      "couple_tax": 23185.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 11.2,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 161500,
      "survivor_deduction": 18960,
      "survivor_taxable": 142540,
      "survivor_tax": 26807.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 16,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3622.4,
      "tax_change_pct": 15.6,
      "filing_status_penalty": 12000,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 130000,
      "couple_cash": 210000,
      "survivor_cash": 170000,
      "survivor_cash_share_pct": 81,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 198000,
      "couple_deduction": 41740,
      "couple_taxable": 156260,
      "couple_tax": 23801.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 11.3,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 164000,
      "survivor_deduction": 18810,
      "survivor_taxable": 145190,
      "survivor_tax": 27443.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 16.1,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3642.4,
      "tax_change_pct": 15.3,
      "filing_status_penalty": 12020,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 132500,
      "couple_cash": 212500,
      "survivor_cash": 172500,
      "survivor_cash_share_pct": 81.2,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 200500,
      "couple_deduction": 41440,
      "couple_taxable": 159060,
      "couple_tax": 24417.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 11.5,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 166500,
      "survivor_deduction": 18660,
      "survivor_taxable": 147840,
      "survivor_tax": 28079.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 16.3,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3662.4,
      "tax_change_pct": 15,
      "filing_status_penalty": 12040,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 135000,
      "couple_cash": 215000,
      "survivor_cash": 175000,
      "survivor_cash_share_pct": 81.4,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 203000,
      "couple_deduction": 41140,
      "couple_taxable": 161860,
      "couple_tax": 25033.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 11.6,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 169000,
      "survivor_deduction": 18510,
      "survivor_taxable": 150490,
      "survivor_tax": 28715.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 16.4,
      "survivor_irmaa_per_person": 2884.8,
      "tax_change": 3682.4,
      "tax_change_pct": 14.7,
      "filing_status_penalty": 12060,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 137500,
      "couple_cash": 217500,
      "survivor_cash": 177500,
      "survivor_cash_share_pct": 81.6,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 205500,
      "couple_deduction": 40840,
      "couple_taxable": 164660,
      "couple_tax": 25649.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 11.8,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 171500,
      "survivor_deduction": 18360,
      "survivor_taxable": 153140,
      "survivor_tax": 29351.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 16.5,
      "survivor_irmaa_per_person": 4620,
      "tax_change": 3702.4,
      "tax_change_pct": 14.4,
      "filing_status_penalty": 12080,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 140000,
      "couple_cash": 220000,
      "survivor_cash": 180000,
      "survivor_cash_share_pct": 81.8,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 208000,
      "couple_deduction": 40540,
      "couple_taxable": 167460,
      "couple_tax": 26265.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 11.9,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 174000,
      "survivor_deduction": 18210,
      "survivor_taxable": 155790,
      "survivor_tax": 29987.6,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 16.7,
      "survivor_irmaa_per_person": 4620,
      "tax_change": 3722.4,
      "tax_change_pct": 14.2,
      "filing_status_penalty": 12100,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 142500,
      "couple_cash": 222500,
      "survivor_cash": 182500,
      "survivor_cash_share_pct": 82,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 210500,
      "couple_deduction": 40240,
      "couple_taxable": 170260,
      "couple_tax": 26881.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 12.1,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 176500,
      "survivor_deduction": 18150,
      "survivor_taxable": 158350,
      "survivor_tax": 30602,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 16.8,
      "survivor_irmaa_per_person": 4620,
      "tax_change": 3720.8,
      "tax_change_pct": 13.8,
      "filing_status_penalty": 12098.4,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 145000,
      "couple_cash": 225000,
      "survivor_cash": 185000,
      "survivor_cash_share_pct": 82.2,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 213000,
      "couple_deduction": 39940,
      "couple_taxable": 173060,
      "couple_tax": 27497.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 12.2,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 179000,
      "survivor_deduction": 18150,
      "survivor_taxable": 160850,
      "survivor_tax": 31202,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 16.9,
      "survivor_irmaa_per_person": 4620,
      "tax_change": 3704.8,
      "tax_change_pct": 13.5,
      "filing_status_penalty": 12082.4,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 147500,
      "couple_cash": 227500,
      "survivor_cash": 187500,
      "survivor_cash_share_pct": 82.4,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 215500,
      "couple_deduction": 39640,
      "couple_taxable": 175860,
      "couple_tax": 28113.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 12.4,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 181500,
      "survivor_deduction": 18150,
      "survivor_taxable": 163350,
      "survivor_tax": 31802,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 17,
      "survivor_irmaa_per_person": 4620,
      "tax_change": 3688.8,
      "tax_change_pct": 13.1,
      "filing_status_penalty": 12066.4,
      "income_effect": -8377.6
    },
    {
      "ss_higher": 40000,
      "ss_lower": 40000,
      "other_income": 150000,
      "couple_cash": 230000,
      "survivor_cash": 190000,
      "survivor_cash_share_pct": 82.6,
      "couple_ss_taxable": 68000,
      "couple_ss_taxable_pct": 85,
      "couple_agi": 218000,
      "couple_deduction": 39340,
      "couple_taxable": 178660,
      "couple_tax": 28729.2,
      "couple_marginal": 0.22,
      "couple_eff_pct": 12.5,
      "couple_irmaa_per_person": 0,
      "survivor_ss_taxable": 34000,
      "survivor_ss_taxable_pct": 85,
      "survivor_agi": 184000,
      "survivor_deduction": 18150,
      "survivor_taxable": 165850,
      "survivor_tax": 32402,
      "survivor_marginal": 0.24,
      "survivor_eff_pct": 17.1,
      "survivor_irmaa_per_person": 4620,
      "tax_change": 3672.8,
      "tax_change_pct": 12.8,
      "filing_status_penalty": 12050.4,
      "income_effect": -8377.6
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  ],
  "households": [
    {
      "key": "H1",
      "ss_higher": 24000,
      "ss_lower": 12000,
      "pension": 0,
      "ira_balance": 590400,
      "rmd_at_75": 24000,
      "other_income": 24000,
      "couple_cash": 60000,
      "survivor_cash": 48000,
      "couple_tax": 0,
      "survivor_tax": 605,
      "tax_change": 605,
      "tax_change_pct": null,
      "same_income_joint_tax": 0,
      "filing_status_penalty": 605,
      "income_effect": 0,
      "couple_irmaa_per_person": 0,
      "survivor_irmaa_per_person": 0
    },
    {
      "key": "H2",
      "ss_higher": 30000,
      "ss_lower": 18000,
      "pension": 12000,
      "ira_balance": 738000,
      "rmd_at_75": 30000,
      "other_income": 42000,
      "couple_cash": 90000,
      "survivor_cash": 72000,
      "couple_tax": 1920,
      "survivor_tax": 4780,
      "tax_change": 2860,
      "tax_change_pct": 148.96,
      "same_income_joint_tax": 1155,
      "filing_status_penalty": 3625,
      "income_effect": -765,
      "couple_irmaa_per_person": 0,
      "survivor_irmaa_per_person": 0
    },
    {
      "key": "H3",
      "ss_higher": 36000,
      "ss_lower": 24000,
      "pension": 20000,
      "ira_balance": 1230000,
      "rmd_at_75": 50000,
      "other_income": 70000,
      "couple_cash": 130000,
      "survivor_cash": 106000,
      "couple_tax": 8324,
      "survivor_tax": 11868.92,
      "tax_change": 3544.92,
      "tax_change_pct": 42.59,
      "same_income_joint_tax": 5876,
      "filing_status_penalty": 5992.92,
      "income_effect": -2448,
      "couple_irmaa_per_person": 0,
      "survivor_irmaa_per_person": 0
    },
    {
      "key": "H4",
      "ss_higher": 40000,
      "ss_lower": 30000,
      "pension": 30000,
      "ira_balance": 2460000,
      "rmd_at_75": 100000,
      "other_income": 130000,
      "couple_cash": 200000,
      "survivor_cash": 170000,
      "couple_tax": 21706.8,
      "survivor_tax": 27443.6,
      "tax_change": 5736.8,
      "tax_change_pct": 26.43,
      "same_income_joint_tax": 15423.6,
      "filing_status_penalty": 12020,
      "income_effect": -6283.2,
      "couple_irmaa_per_person": 0,
      "survivor_irmaa_per_person": 2884.8
    }
  ],
  "threshold_pairs": [
    {
      "item": "Standard deduction (base)",
      "mfj": 32200,
      "single": 16100,
      "relation": "halves exactly"
    },
    {
      "item": "Additional deduction, age 65+ (both spouses 65+ vs one survivor)",
      "mfj": 3300,
      "single": 2050,
      "relation": "drops (per-spouse $1,650 ×2 → unmarried $2,050)"
    },
    {
      "item": "Senior deduction, OBBBA §70103 (maximum, 2025–2028)",
      "mfj": 12000,
      "single": 6000,
      "relation": "halves; phase-out threshold also halves ($150,000 → $75,000 MAGI)"
    },
    {
      "item": "12% bracket ceiling (taxable income)",
      "mfj": 100800,
      "single": 50400,
      "relation": "halves exactly"
    },
    {
      "item": "22% bracket ceiling (taxable income)",
      "mfj": 211400,
      "single": 105700,
      "relation": "halves exactly"
    },
    {
      "item": "§86 SS-taxability thresholds (provisional income)",
      "mfj": "32000 / 44000",
      "single": "25000 / 34000",
      "relation": "drops — NOT a halving"
    },
    {
      "item": "IRMAA tier-1 floor (MAGI)",
      "mfj": 218000,
      "single": 109000,
      "relation": "halves exactly (42 U.S.C. §1395r(i)(2)(B)); tiers 2–4 also halve; top tier 750,000 → 500,000"
    },
    {
      "item": "Capital-gains 0% breakpoint (taxable income)",
      "mfj": 98900,
      "single": 49450,
      "relation": "halves exactly"
    },
    {
      "item": "Capital-gains 20% breakpoint (taxable income)",
      "mfj": 613700,
      "single": 545500,
      "relation": "drops — NOT a halving"
    },
    {
      "item": "NIIT threshold (MAGI, statutory §1411)",
      "mfj": 250000,
      "single": 200000,
      "relation": "drops $50,000 — NOT a halving"
    }
  ],
  "irmaa_timing": "Premiums for year D+2 are set from the year-of-death (D) return, which is still joint under IRC §6013(a)(3), so joint thresholds apply to that determination; premiums for D+3 are the first set from a single-filer return (year D+1). Form SSA-44 reconsideration applies when a life-changing event REDUCES income — in these scenarios most income continues, so the halved thresholds simply take effect on the D+1 return.",
  "related": [
    {
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}
