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Bill review: Income Tax Reduction Act of 2026 (GA)#68

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DTrim99:bill/ga-sb476
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Bill review: Income Tax Reduction Act of 2026 (GA)#68
DTrim99 wants to merge 1 commit intoPolicyEngine:mainfrom
DTrim99:bill/ga-sb476

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@DTrim99 DTrim99 commented Feb 13, 2026

Bill Review: Income Tax Reduction Act of 2026

Reform ID: ga-sb476 | State: GA
Bill text: https://www.legis.ga.gov/legislation/72977
Description: Reduces Georgia income tax rate to 4.99% and increases standard deductions to $50,000 for single filers and $100,000 for joint filers, effective January 1, 2026.

Merging this PR will publish the bill to the dashboard.


What we model

Provision Parameter Current Proposed Bill Reference
Georgia Income Tax Rate gov.states.ga.tax.income.main.single[0-5].rate (all filing statuses) 5.09% 4.99% §48-7-20 (individual tax rates)
Standard Deduction (Single) gov.states.ga.tax.income.deductions.standard.amount.SINGLE $12,000 $50,000 §48-7-27 (computation of taxable net income)
Standard Deduction (Joint) gov.states.ga.tax.income.deductions.standard.amount.JOINT $24,000 $100,000 §48-7-27
Standard Deduction (HOH) gov.states.ga.tax.income.deductions.standard.amount.HEAD_OF_HOUSEHOLD $12,000 $50,000 §48-7-27
Standard Deduction (Separate) gov.states.ga.tax.income.deductions.standard.amount.SEPARATE $12,000 $50,000 §48-7-27
Standard Deduction (Surviving Spouse) gov.states.ga.tax.income.deductions.standard.amount.SURVIVING_SPOUSE $12,000 $50,000 §48-7-27

What we don't model

  • Repeal of ~29 tax credits (effective 2027) — requires structural changes to PE-US
  • Corporate income tax rate change (also to 4.99%)
  • Tax credit sunset (2032)

Validation

External estimates

Source Estimate Period Link
GBPI (rate cut only) -$778M Annual Breaking the Bank
GBPI (std deduction increase) ~-$6.0B Annual Budget Overview FY2027
GBPI (combined gross) ~-$6.8B Annual Rate cut + deduction combined
Senate floor (Sen. McLaurin, D) ~-$9.0B Annual Georgia Sun
Senate floor (Sen. Tillery, R) <-$3.0B Annual (net) Includes ~$1B offset from credit repeals

Note: No official fiscal note has been published by the Georgia Office of Planning and Budget as of the encoding date.

Back-of-envelope check

Rate cut (5.09% to 4.99% = 0.10pp):
GA personal income tax revenue FY2025 = $16.2B at ~5.09% implies taxable income base of ~$318B
0.001 x $318B = -$318M
(GBPI's $778M figure uses 5.19% 2025 baseline, i.e., 0.20pp cut)

Standard deduction ($12K to $50K single, $24K to $100K joint):
71% of GA's 5.4M filers (3.8M) earn <$100K and contribute 26% of PIT ($3.98B in FY2023)
Eliminating their tax liability: ~-$4.0B
Remaining 29% (1.6M filers) gain additional deduction x 4.99%: 1.6M x $38K avg x 4.99% = **-$3.0B**
Total standard deduction: ~-$4.0B to -$7.0B

Combined back-of-envelope: -$4.3B to -$7.3B

PE vs External comparison

Source Estimate vs PE Difference
PE (PolicyEngine) -$5.01B -- --
GBPI (gross, no credit offsets) -$6.8B -26.3% Acceptable
Senate (Tillery, net w/ credit repeals) -$3.0B +67.0% PE higher (we don't model credit repeals)
Back-of-envelope (midpoint) -$5.8B -13.6% Acceptable

Verdict: PE estimate (-$5.01B) falls between the net estimate ($3B after credit repeals we don't model) and the gross estimate ($6.8B without offsets). This is expected: PE models the rate cut + deduction increase but not the ~$1B+ in credit repeals that partially offset the revenue loss. Difference from GBPI's $6.8B gross likely reflects different data sources (PE uses Enhanced CPS microdata vs GA DOR tax return data) and GBPI's 0.20pp rate cut assumption from the 2025 baseline.


Key results

Metric Value
Revenue impact -$5,012,570,108
Poverty rate 24.56% to 24.13% (-1.77%)
Child poverty rate 24.37% to 23.93% (-1.81%)
Winners 64.2%
No change 32.2%
Losers 3.6%

Decile impact

Decile Relative Change Avg Benefit
1 0.60% $98
2 1.14% $418
3 1.28% $668
4 1.34% $859
5 1.48% $1,119
6 1.76% $1,585
7 1.87% $2,024
8 1.60% $2,113
9 1.68% $2,860
10 0.51% $3,237

District impacts

District Avg Benefit Winners Losers Poverty Change
GA-1 $1,133 63.0% 3.0% -2.19%
GA-2 $816 58.0% 3.0% -0.25%
GA-3 $1,391 66.0% 3.0% -0.76%
GA-4 $1,646 68.0% 4.0% -3.33%
GA-5 $1,674 69.0% 3.0% -2.85%
GA-6 $1,548 68.0% 3.0% -1.82%
GA-7 $1,849 69.0% 5.0% -4.21%
GA-8 $947 60.0% 3.0% -0.62%
GA-9 $996 60.0% 4.0% -0.90%
GA-10 $1,252 65.0% 3.0% -2.49%
GA-11 $1,786 67.0% 4.0% -1.92%
GA-12 $1,133 64.0% 3.0% -1.10%
GA-13 $873 60.0% 3.0% -1.46%
GA-14 $1,186 65.0% 4.0% -1.25%

Parameter changes

Parameter Period Value Bill Reference
gov.states.ga.tax.income.main.{status}[0-5].rate 2026-01-01+ 0.0499 (4.99%) §48-7-20
gov.states.ga.tax.income.deductions.standard.amount.SINGLE 2026-01-01+ $50,000 §48-7-27
gov.states.ga.tax.income.deductions.standard.amount.JOINT 2026-01-01+ $100,000 §48-7-27
gov.states.ga.tax.income.deductions.standard.amount.HEAD_OF_HOUSEHOLD 2026-01-01+ $50,000 §48-7-27
gov.states.ga.tax.income.deductions.standard.amount.SEPARATE 2026-01-01+ $50,000 §48-7-27
gov.states.ga.tax.income.deductions.standard.amount.SURVIVING_SPOUSE 2026-01-01+ $50,000 §48-7-27

Data quality notes

  • Uses PolicyEngine's Enhanced CPS microdata for Georgia, projected to tax year 2026
  • District-level estimates may have higher variance due to sample sizes
  • CPS top-coding affects estimates for ultra-high earners (decile 10)
  • 3.6% losers are itemizers who lose SALT deduction value when state taxes drop (expected behavior)
Reform parameters JSON
{
  "gov.states.ga.tax.income.main.single[0].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.single[1].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.single[2].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.single[3].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.single[4].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.single[5].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.joint[0].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.joint[1].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.joint[2].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.joint[3].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.joint[4].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.joint[5].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.head_of_household[0].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.head_of_household[1].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.head_of_household[2].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.head_of_household[3].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.head_of_household[4].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.head_of_household[5].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.separate[0].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.separate[1].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.separate[2].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.separate[3].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.separate[4].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.separate[5].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.surviving_spouse[0].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.surviving_spouse[1].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.surviving_spouse[2].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.surviving_spouse[3].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.surviving_spouse[4].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.main.surviving_spouse[5].rate": {"2026-01-01.2100-12-31": 0.0499},
  "gov.states.ga.tax.income.deductions.standard.amount.SINGLE": {"2026-01-01.2100-12-31": 50000},
  "gov.states.ga.tax.income.deductions.standard.amount.JOINT": {"2026-01-01.2100-12-31": 100000},
  "gov.states.ga.tax.income.deductions.standard.amount.HEAD_OF_HOUSEHOLD": {"2026-01-01.2100-12-31": 50000},
  "gov.states.ga.tax.income.deductions.standard.amount.SEPARATE": {"2026-01-01.2100-12-31": 50000},
  "gov.states.ga.tax.income.deductions.standard.amount.SURVIVING_SPOUSE": {"2026-01-01.2100-12-31": 50000}
}

Versions

  • PolicyEngine US: 1.555.3
  • Dataset: policyengine-us-data v1.48.0
  • Computed: 2026-02-13

@DTrim99 DTrim99 added the bill-review Bill review PR awaiting approval label Feb 13, 2026
@DTrim99
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DTrim99 commented Feb 13, 2026

I'm not sure why people are worse off under this bill.

@PavelMakarchuk
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2032 Tax Credit Sunset — What It Would Affect

The bill's blanket sunset (Jan 1, 2032) covers ALL credits against GA taxable net income. Here's what PE-US currently models for GA:

PE-Modeled Credits (parametrically modelable)

Credit Parameter Current Value Sunset = set to 0
Child & Dependent Care Credit gov.states.ga.tax.income.credits.cdcc.rate 50% of federal CDCC Yes
Child Tax Credit gov.states.ga.tax.income.credits.ctc.amount $250/child under 6 Yes
Low Income Credit gov.states.ga.tax.income.credits.low_income.amount[0-5] $5–$26 (bracketed) Yes
Itemizer Credit gov.states.ga.tax.income.credits.itemizer.amount $300 flat Yes

These are all listed in the non-refundable credits parameter for 2026:

gov.states.ga.tax.income.credits.non_refundable = ['ga_cdcc', 'ga_low_income_credit', 'ga_ctc', 'ga_itemizer_credit']

Credits PE Does NOT Model (structural — can't zero out)

Georgia has dozens of additional credits that PE-US doesn't implement:

  • Rural hospital credit
  • Film/entertainment industry credit
  • Job tax credit
  • Historic rehabilitation credit
  • Conservation contribution credit
  • Research & development credit
  • Angel investor credit
  • Clean energy credits

These are mostly corporate/industry credits that don't directly affect household distributional results, but matter for the total fiscal picture.

Modeling the Sunset

The PE-modeled credits (CDCC, CTC, low-income, itemizer) could be zeroed out parametrically for 2032-01-01.2100-12-31. This would capture the household-level impact of the sunset but miss the corporate/industry credits.

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