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Aug 9, 2026
SNAP payment error simulator
Simulate each state's measured SNAP payment error rate from its own Quality Control cases: cost-share tier probabilities under the FY 2028 formula, the FY 2025 vs FY 2026 election, audit-volume effects, and a verified case-level model scenario.
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Jul 13, 2026
NJ Child Tax Credit increase calculator
See the impact of New Jersey's enacted 25% Child Tax Credit increase (P.L.2026, c.26) on New Jersey households, statewide and by congressional district
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Jun 16, 2026
Introducing PolicyBench: how accurately can AI compute taxes and benefits?
We tested 13 frontier language models on 100 representative US households, with no tools, scored against PolicyEngine. GPT-5.5 leads, getting 80.3% exactly right.
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May 19, 2026
South Carolina 2026 tax changes calculator
Estimate the household and statewide impact of South Carolina H.4216 (Act 110), which consolidates income tax brackets, replaces federal deductions with the state-specific SCIAD, and caps the nonrefundable state EITC at $200
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May 14, 2026
Missouri income tax elimination calculator
Explore paths to eliminating Missouri's individual income tax under HJR 173 and 174, modeling household and state revenue impacts across four reform approaches
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