PolicyEngine

The Common Sense Institute @CSInstituteOR's new affordability report calculates state and federal income tax using PolicyEngine as part of its cross-state analysis of household costs. commonsenseinstituteus.org/oregon/researc…

PolicyEngine received an honourable mention in @impact_innovEN's G7 GovAI Grand Challenge. We’re encouraged to see open-source infrastructure for tax and benefit analysis recognized as a promising public-sector AI application. impact.canada.ca/en/challenges/…

NEW INTERACTIVE: PolicyEngine has built a calculator analyzing Senator @ChrisVanHollen's Working Americans' Tax Cut Act. policyengine.org/us/watca Here's what's in it 🧵

New analysis: The Alternative Minimum Tax claws back up to 59% of @SenBooker's Keep Your Pay Act tax benefits. Read it: policyengine.org/us/research/ke… While Senator Booker's calculator does not capture the AMT interaction, ours does. Try it here: policyengine.org/us/keep-your-p…

In a new Break Glass report, @BudgetHawks cites PolicyEngine modeling as part of its surtax analysis. We estimate that a 1% surtax on AGI between $100K and $1M, plus a 2% surtax above $1M, would raise about $900 billion over a decade. crfb.org/papers/break-g…

NEW ANALYSIS: @SenBooker's Keep Your Pay Act - higher standard deduction, expanded CTC & EITC, higher top tax rates. Static model finds: - $5.2T 10-year cost - 73% of households gain, 1.6% lose in 2026 - Poverty falls 10% in 2026 We also provide a personalized calculator.

We've partnered with @nberpubs 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

We just launched a plugin that brings PolicyEngine to @claudeai. Describe any tax or benefit reform in plain English. Claude runs a full microsimulation using our open-source model — 4,000+ variables, 65,000+ parameters, all 50 states. No code required. policyengine.org/us/claude-plug…

Can the government solve the student loan crisis in England and Wales? 💷 And does the system work better in Scotland? 🏴󠁧󠁢󠁳󠁣󠁴󠁿 Watch our analysis featuring new modelling from @PolicyEngineUK and let us know what you think should be done👇 #Peston

We just launched a plugin that brings PolicyEngine to @claudeai. Describe any tax or benefit reform in plain English. Claude runs a full microsimulation using our open-source model — 700+ variables, 1,200+ parameters, NI to UC. No code required. policyengine.org/uk/claude-plug…

Happy Valentine's Day from PolicyEngine♥️

Happy Valentine's Day! We just launched PolicyEngine's marriage calculator. Find out if saying "I do" means a bonus or penalty for your household — covers all 50 US states + DC, with breakdowns across taxes, benefits, credits, and healthcare. Try it: policyengine.org/us/marriage

Happy Valentine's Day! We just launched PolicyEngine's marriage calculator. Find out if saying "I do" means a bonus or penalty for your household — from the marriage allowance to Universal Credit. Try it: policyengine.org/uk/marriage

We recorded a webinar walking through this in detail — including a live demo encoding a new state program from scratch during the session. 5 stages of evolution, from a single prompt to a multi-agent workflow that cuts 2-3 weeks to 90 minutes. youtu.be/Ke_J3pOdL8k

Join our webinar today at 1:30PM ET to learn more! us06web.zoom.us/meeting/regist…

RT @PolicyEngineUS: REMINDER: PolicyEngine is hosting a webinar at 2:00 ET today, where will demo our Rhode Island Child Tax Credit Calcula…

Read Nikhil's article: fellows.ai.gov.uk/articles/nikhi… And more on our blog: policyengine.org/uk/research/po…

PolicyEngine is supporting rapid policy analysis at the UK Prime Minister's office. Co-founder and CTO @NikhilWoodruff spent 6 months as an Innovation Fellow with 10DS at @10DowningStreet, adapting our open-source microsimulation for government use.

Utah SB60 would cut the state income tax rate from 4.5% to 4.45%, reducing revenues by $84 million in 2026. Who benefits? 53% of Utahns, with higher earners saving more in absolute terms. Our analysis breaks down winners by income decile: policyengine.org/us/research/ut…