NEW: Governor Dan McKee's office used PolicyEngine's Rhode Island Child Tax Credit Calculator to design the CTC proposal in his FY2027 budget. Here's how the tool came together and what the Governor's proposal would do 🧵

Sens. Hassan (D-NH) and Young (R-IN) introduced the Stronger Start for Working Families Act—removing the $2,500 earnings threshold for the refundable Child Tax Credit. PolicyEngine analysis: - Costs $14.6B over 10 years - Benefit 5.9% of Americans www.policyengine.org/us/research/...

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/utah-sb60-income-tax-reduction

2025 was our biggest year yet. 62 jurisdictions modeled 100K+ people discovering benefits 50+ research reports From OBBBA to state and local models to premium tax credit simulations—here's everything we built. Explore our 2025 in full: policyengine.org/us/2025-year...

Last day to make tax-deductible donations in 2025. GiveCalc by @policyengine.org shows exactly how much your charitable giving saves on federal and state taxes—before midnight tonight.

We've signed an MOU with @atlantafed.org to integrate their Policy Rules Database into our validation infrastructure. Combined with @nber.org TAXSIM, we now have three-way validation—and our TAXSIM work has already improved both models. Read more: policyengine.org/us/research/...

This Giving Tuesday, know what your donation actually costs. GiveCalc calculates your federal + state tax savings on charitable donations — all 50 states (plus DC and NYC), 2024-2026 tax years, HR1 changes included.

Wishing everyone a warm Thanksgiving filled with good food and good company 🧡

In a new article for @jacobinmag.bsky.social, @dtrim99.bsky.social uses PolicyEngine to calculate the impact of @reprashida.govpeeps.us's "Economic Dignity for All Agenda" on poverty, inequality, and the budget. jacobin.com/2025/11/tlai...

In a new article for People's Policy Project, @dtrim99.bsky.social used PolicyEngine to estimate the impact of @reprashida.govpeeps.us's Economic Dignity for All Agenda, finding the cash assistance package would (in 2026): * Reduce poverty by 42% * Lower the Gini index by 8.1% * Cost $685 billion

PolicyEngine is at @natltax.bsky.social in Boston! ✅ This morning: Calibrating Survey and Admin Data to Enable Local Tax Microsimulation — presented by Ben Ogorek 📅 Tomorrow (Fri 8:30 AM, Westin Copley Adams Rm): Simulating Reforms to Taxation of Social Security Benefits — join us!

BREAKING: PolicyEngine's microsimulation model projects a surge in candy consumption in the coming hours. Happy Halloween! 🎃

Missed our webinar introducing the ACA calculator? Catch the recording and see how extending enhanced subsidies would affect different household types across the country: youtu.be/ni0DI4cHECI

California's proposed billionaire tax creates marginal rates of 50-60% on wealth between $1.0-$1.1 billion due to its phase-in structure. We analyzed the math behind Initiative 25-0024: policyengine.org/us/research/...

Join us this evening at our new office! luma.com/lnrzph2h

We used Claude Code to choose our DC office. Built an interactive comparison tool → analyzed 8 coworking spaces → picked @opengovhub.bsky.social. Now we're surrounded by 40+ civic tech and policy organizations in the heart of DC 🧵

The Prenatal-to-3 Policy Impact Center just launched their new Policy Impact Calculator, which uses @us.policyengine.org for federal and state tax modeling. Great example of research infrastructure enabling better policy decisions for young children and families. pn3policy.org/policy-impac...

Our new ACA calculator shows how extending the enhanced premium tax credits would affect households. An extreme case: A 64-year-old in Fairbanks, AK would gain $655 in 2026 if they earn $61k, but gain $26,861 if they earn $62k. Try it here: policyengine.org/us/aca-calc

🤝 Big news: PolicyEngine and @nber.org have signed an MOU to ensure researchers worldwide continue accessing critical tax microsimulation tools. We're building an open-source TAXSIM emulator, combining NBER's 50+ years of tax expertise with modern open-source infrastructure.

🎉 PolicyEngine has been awarded a $300,000 Phase I POSE grant from NSF (Award No. 2518372) to expand our open-source platform, build sustainable governance, and grow our contributor community! https://policyengine.org/us/research/nsf-pose-phase-1-grant

How do energy policies like carbon taxes, LIHEAP, or EV credits impact households? We recap PolicyEngine's open-source tools for analyzing these effects in the US & UK. Learn more in our latest post, featuring insights from the Open Sustainability Policy Summit: policyengine.org/us/research/...

Happy Tax Day Everyone! Last year I turned 25 and started a new job in August. Because of my age and earnings in 2024, I qualified for the Earned Income Tax Credit! Using @us.policyengine.org, I can calculate my federal EITC and state EITC, as well as my taxes and net income.

A fun new tool from @maxghenis.bsky.social : a calculator for charitable contributions, including both state and federal effects and interactions with other deductions. Lots of other good bells and whistles. @nicduquette.bsky.social should be into this. policyengine.org/us/research/...

The OECD's new report highlights how governments are translating regulations into executable code to make public services more consistent, transparent and efficient. This is exactly why we're building PolicyEngine! Read more: www.oecd.org/en/publicati...

Free, open-source policy analysis tools are essential for evidence-based policymaking. Grateful for NEO Philanthropy's support in expanding access to sophisticated microsimulation modeling.

Want a job doing #RukesAsCode?

Great to see @pn3policy.bsky.social continuing to expand the breadth and depth of their Policy Impact Calculator here at APPAM! Among their many sources are tax calculations from @policyengineus.bsky.social.