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The PolicyEngine US Python package contains a rules engine of the US tax-benefit system, and microdata generation for microsimulation analysis.

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2023 Income Tax Form Instructions: https://revenue.nebraska.gov/sites/revenue.nebraska.gov/files/doc/tax-forms/2023/incometax/f_1040n_booklet_2023_Final.pdf

states/ne
2023

The credit was introduced in 2022 [Tax Form ](https://www.dfa.arkansas.gov/images/uploads/incomeTaxOffice/2022_Final_AdditionalTaxCreditforQualifiedIndividuals_FI.pdf)

states/ar
2022

[Splinter, Larrimore, and Mortenson (2017)](https://www.federalreserve.gov/econres/feds/files/2017089pap.pdf) find that households with multiple tax units often claim dependents in a way that minimizes total liabilities. We currently take tax unit assignment from the...

cps

In #4306 @shuyu7zhan is adding uprating based on the IRS factor. However, DC's differs from this; instead of the June-June change, it's calendar year based: >(12) The term "cost-of-living adjustment"...

states/dc

# Variable to add: local_eitc Montgomery county, MD local EITC It's a weird one, this is the only county.

state-income-tax
states/md

Given https://github.com/PolicyEngine/policyengine-us/pull/4376 will change some aggregates

We need this to ensure that tax before refundable credits are nonnegative under both baseline law and the reform to use reported state tax. So we should use `STATETAX_B` for...

cps

This should be capped at (employment income less pre-tax retirement contributions)