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Policy Simulation Library @pslmodels.org · 27/07/2026

New PSL Demo Day: The open source Tariff Rate Tracker and Tariff Model by the Budget Lab at Yale. An excellent tool to help work through the constantly changing tariff landscape in the US. Thanks to @johniselin.bsky.social for a a great conversation covering these tools. youtu.be/tjBpUuA-q7E

youtu.be

PSL Demo Day 64: The Budget Lab's Tariff Tracker

YouTube video by Policy Simulation Library

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Reposted by Policy Simulation Library

PolicyEngine US @us.policyengine.org · 02/03/2026

We've partnered with @nber.org to build the next chapter of TAXSIM — an open-source, drop-in replacement powered by PolicyEngine's microsimulation engine. Works with CLI, Python, R, Stata, SAS, and Julia. Try it here: policyengine.org/us/taxsim

Dark teal graphic titled "The next chapter of TAXSIM" with subtitle "In partnership with NBER." Left side describes it as an open-source, drop-in replacement for TAXSIM35 powered by PolicyEngine's microsimulation engine, with a link to policyengine.org/us/taxsim. Right side shows a terminal window with install command "pip install policyengine-taxsim," usage example, compatibility badges for CLI, Python, R, Stata, SAS, and Julia, and validation note showing 1,000+ test scenarios passing. PolicyEngine and NBER logos at bottom.

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Policy Simulation Library @pslmodels.org · 28/07/2025

The new OBBA household explorer from @policyengine.org is neat tool to simulate the disparate impacts of the newly enacted changes in tax and benefit policy. Check it out! policyengine.org/us/research/...

policyengine.org

Introducing the OBBBA Household Explorer | PolicyEngine US

New interactive tool reveals household-level impacts of the One Big Beautiful Bill Act.

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Policy Simulation Library @pslmodels.org · 23/04/2025

Latest Demo Day: James Broughel sharing his energy leasing model used to forecast the revenue effects of changes in federal leasing policies: youtu.be/d4l1bcqWW0U

youtu.be

PSL Demo Day 61: The Revenue Impact of Federal Oil and Gas Leasing

YouTube video by Policy Simulation Library

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Policy Simulation Library @pslmodels.org · 08/04/2025

An amazing combination of academic research, community participation, and local government involvement went into their modeling tool. Hear more from them in what was a great conversation: youtu.be/dYpQ5aoGUD4

youtu.be

PSL Demo Day 60: Modeling Housing Displacement Risk

YouTube video by Policy Simulation Library

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Policy Simulation Library @pslmodels.org · 08/04/2025

Not only did they build a model of displacement risk, but they've also provided an interface to make local housing policy more transparent to the community and developers.

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Policy Simulation Library @pslmodels.org · 08/04/2025

In our most recent PSL Demo Day, @lorettaclees.bsky.social, @kentoncard.bsky.social , and Andre Comandon talk about their project creating an open source tool to assess housing displacement risk.

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