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TCJA.json
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// Title: Tax Cuts and Jobs Act, final version
// Reform_File_Author: Cody Kallen (with updates by Martin Holme and Bodi Yang)
// Reform_Reference: 2018 IRS forms and this URL:
// http://docs.house.gov/billsthisweek/20171218/CRPT-115HRPT-466.pdf
// Reform_Baseline: 2017_law.json
// Reform_Description:
// - New personal income tax schedule (regular/non-AMT/non-pass-through) (1)
// - New pass-through income tax schedule (2)
// - New standard deductions (3)
// - Repeal personal exemption (4)
// - Modification to child tax credit, nonrefundable dependent credits (5)
// - Modification of Alternative Minimum Tax exemption parameters (6)
// - Changes to certain above the line deductions (7)
// - Changes to itemized deductions (8)
// - Switch to chained CPI from CPI-U for tax parameter adjustment (9)
// Reform_Parameter_Map:
// - 1: II_*
// - 2: PT_*
// - 3: STD (can safely ignore WARNINGs about 2026+ values)
// - 4: II_em
// - 5: ODC_c, _CTC_c, _CTC_ps, _ACTC_c, _ACTC_Income_thd
// - 6: AMT_em*
// - 7: ALD_*
// - 8: ID_* (can safely ignore WARNINGs about values for several parameters)
// - 9: parameter_indexing_CPI_offset
// Note: II_brk*, PT_brk*, STD, II_em are rounded to nearest integer value
{
"II_rt1": {"2018": 0.10,
"2026": 0.10},
"II_rt2": {"2018": 0.12,
"2026": 0.15},
"II_rt3": {"2018": 0.22,
"2026": 0.25},
"II_rt4": {"2018": 0.24,
"2026": 0.28},
"II_rt5": {"2018": 0.32,
"2026": 0.33},
"II_rt6": {"2018": 0.35,
"2026": 0.35},
"II_rt7": {"2018": 0.37,
"2026": 0.396},
"II_brk1": {"2018": [9525, 19050, 9525, 13600, 19050],
"2026": [11242, 22484, 11242, 16094, 22484]},
"II_brk2": {"2018": [38700, 77400, 38700, 51800, 77400],
"2026": [45751, 91502, 45751, 61242, 91502]},
"II_brk3": {"2018": [82500, 165000, 82500, 82500, 165000],
"2026": [110791, 184571, 92286, 158169, 184571]},
"II_brk4": {"2018": [157500, 315000, 157500, 157500, 315000],
"2026": [231045, 281317, 140659, 256181, 281317]},
"II_brk5": {"2018": [200000, 400000, 200000, 200000, 400000],
"2026": [502356, 502356, 251178, 502356, 502356]},
"II_brk6": {"2018": [500000, 600000, 300000, 500000, 600000],
"2026": [504406 ,567457, 283728, 535931, 567457]},
"PT_rt1": {"2018": 0.10,
"2026": 0.10},
"PT_rt2": {"2018": 0.12,
"2026": 0.15},
"PT_rt3": {"2018": 0.22,
"2026": 0.25},
"PT_rt4": {"2018": 0.24,
"2026": 0.28},
"PT_rt5": {"2018": 0.32,
"2026": 0.33},
"PT_rt6": {"2018": 0.35,
"2026": 0.35},
"PT_rt7": {"2018": 0.37,
"2026": 0.396},
"PT_brk1": {"2018": [9525, 19050, 9525, 13600, 19050],
"2026": [11242, 22484, 11242, 16094, 22484]},
"PT_brk2": {"2018": [38700, 77400, 38700, 51800, 77400],
"2026": [45751, 91502, 45751, 61242, 91502]},
"PT_brk3": {"2018": [82500, 165000, 82500, 82500, 165000],
"2026": [110791, 184571, 92286, 158169, 184571]},
"PT_brk4": {"2018": [157500, 315000, 157500, 157500, 315000],
"2026": [231045, 281317, 140659, 256181, 281317]},
"PT_brk5": {"2018": [200000, 400000, 200000, 200000, 400000],
"2026": [502356, 502356, 251178, 502356, 502356]},
"PT_brk6": {"2018": [500000, 600000, 300000, 500000, 600000],
"2026": [504406 ,567457, 283728, 535931, 567457]},
"PT_qbid_rt": {"2018": 0.2,
"2026": 0.0},
"PT_qbid_taxinc_thd": {"2018": [157500, 315000, 157500, 157500, 315000],
"2026": [0, 0, 0, 0, 0]},
"PT_qbid_taxinc_gap": {"2018": [50000, 100000, 50000, 50000, 100000],
"2026": [1, 1, 1, 1, 1]},
"PT_qbid_w2_wages_rt": {"2018": 0.5,
"2026": 0.0},
"PT_qbid_alt_w2_wages_rt": {"2018": 0.25,
"2026": 0.0},
"PT_qbid_alt_property_rt": {"2018": 0.025,
"2026": 0.0},
"STD": {"2018": [12000, 24000, 12000, 18000, 24000],
"2026": [7655, 15311, 7655, 11272, 15311]},
"II_em": {"2018": 0,
"2026": 4883},
"ODC_c": {"2018": 500,
"2026": 0},
"CTC_c": {"2018": 2000,
"2026": 1000},
"CTC_ps": {"2018": [200000, 400000, 200000, 200000, 400000],
"2026": [75000, 110000, 55000, 75000, 75000]},
"ACTC_c": {"2018": 1400,
"2022": 1500,
"2025": 1600,
"2026": 1000},
"ACTC_Income_thd": {"2018": 2500,
"2026": 3000},
"AMT_em": {"2018": [70300, 109400, 54700, 70300, 109400],
"2026": [65462, 101870, 50935, 65461, 101870]},
"AMT_em_ps": {"2018": [500000, 1000000, 500000, 500000, 1000000],
"2026": [145511, 193974, 96987, 145511, 193974]},
"AMT_em_pe": {"2018": 718800,
"2026": 302083},
"ALD_DomesticProduction_hc": {"2018": 1,
"2026": 0},
"ALD_AlimonyPaid_hc": {"2019": 1,
"2026": 0},
"ALD_AlimonyReceived_hc": {"2019": 0,
"2026": 1},
"ALD_BusinessLosses_c": {"2018": [250000, 500000, 250000, 250000, 500000],
"2026": [9e99, 9e99, 9e99, 9e99, 9e99]},
"ID_ps": {"2018": [9e99, 9e99, 9e99, 9e99, 9e99],
"2026": [316675, 380010, 190005, 348343, 380010]},
"ID_prt": {"2018": 0.00,
"2026": 0.03},
"ID_crt": {"2018": 1.0,
"2026": 0.8},
"ID_Charity_crt_cash": {"2018": 0.6,
"2026": 0.5},
"ID_Casualty_hc": {"2018": 1,
"2026": 0},
"ID_AllTaxes_c": {"2018": [10000, 10000, 5000, 10000, 10000],
"2026": [9e99, 9e99, 9e99, 9e99, 9e99]},
"ID_Miscellaneous_hc": {"2018": 1,
"2026": 0},
"ID_Medical_frt": {"2017": 0.075,
"2019": 0.075},
"parameter_indexing_CPI_offset": {"2017": 0.0},
// Apply parameters that are affected by the change in index rates
// even though they are not directly modified by TCJA.
"II_em_ps": {"2018": [9e99, 9e99, 9e99, 9e99, 9e99]},
"STD_Dep": {"2018": 1050, "2019": 1100, "2020": 1100, "2021": 1100, "2022": 1150},
"STD_Aged": {"2018": [1600, 1300, 1300, 1600, 1300]},
"CG_brk1": {"2018": [38600, 77200, 38600, 51700, 77200]},
"CG_brk2": {"2018": [425800, 479000, 239500, 452400, 479000]},
"AMT_CG_brk1": {"2018": [38600, 77200, 38600, 51700, 77200]},
"AMT_CG_brk2": {"2018": [425800, 479000, 239500, 452400, 479000]},
"AMT_child_em": {"2018": 7600},
"AMT_brk1": {"2018": 191100},
"EITC_c": {"2018": [519, 3461, 5716, 6431]},
"EITC_MaxEligAge": {"2022":125, "2023": 125},
"EITC_ps": {"2018": [8490, 18660, 18660, 18660]},
"EITC_ps_MarriedJ": {"2018": [5680, 5690, 5690, 5690]},
"EITC_InvestIncome_c": {"2018": 3500},
"ETC_pe_Single": {"2018": 67},
"ETC_pe_Married": {"2018": 134},
"FST_AGI_thd_lo": {"2018": [1000000, 1000000, 500000, 1000000, 1000000]},
"FST_AGI_thd_hi": {"2018": [2000000, 2000000, 1000000, 2000000, 2000000]}
}