Research and analysis
Read PolicyEngine's research on recent and proposed policy reforms, as well as technical and general updates from the organisation.
59 results
22 April 2025
Analyzing Energy Policy with PolicyEngine
We provide an Earth Day recap of our capabilities in the US and UK.
26 March 2025
Analysis of the Spring 2025 OBR forecast
PolicyEngine integrates the new OBR forecasts to provide updated predictions on household income, poverty, and inequality.
25 March 2025
Extending the Income Tax threshold freeze to 2030
PolicyEngine estimates extending the personal allowance and higher rate threshold freeze would raise £12.2 billion over two years.
24 March 2025
HM Treasury pilots PolicyEngine UK for tax-benefit microsimulation
The UK government's finance ministry explores PolicyEngine as a potential supplement to existing models.
18 March 2025
Restricting eligibility for the Personal Independence Payment Daily Living part
We simulate potential realisations of the Government's new £5 billion reform.
11 March 2025
The impact of Personal Independence Payment, and freezing its level in 2025
How the disability benefit, and one reform the government is reportedly considering, affect the UK household sector.
6 March 2025
Exempting young children from the two-child limit
Analysis of the potential impact of limiting the two-child limit to families with children under 5 years old.
5 February 2025
How We're Improving our API in 2025
PolicyEngine's API target architecture for 2025.
28 December 2024
PolicyEngine UK in 2024: A year in review
From AI-powered analysis to election impact, we transformed policy research through technology.
26 December 2024
New AI feature helps people understand their taxes and benefits
We’re applying large language models to clarify complex policy rules.
19 December 2024
Nuffield Foundation awards £250k to enhance PolicyEngine UK
Grant will support expanding and localising tax-benefit microsimulation capabilities.
12 November 2024
How PolicyEngine UK models behavioural responses
PolicyEngine has enhanced its modelling with behavioural responses, including income, substitution and capital gains elasticities.
6 November 2024
Capital Gains Tax reforms in the Autumn Budget 2024
PolicyEngine estimates that the UK's 2024 Capital Gains Tax reforms will raise £6.4 billion between 2025-2029.
31 October 2024
Benefits uprating 2025/26
PolicyEngine projects Labour's 1.7% benefits uprating would cost £2.5 billion, mainly benefiting lower-income households.
31 October 2024
Levying VAT on private school fees in the Autumn Budget
PolicyEngine projects the reforms to private school VAT would raise £1.5 billion in 2025.
30 October 2024
Fuel duty reforms in the Autumn Budget 2024
PolicyEngine projects the reforms to fuel duty will cost £2.4 billion in 2025.
30 October 2024
Employer National Insurance reforms in the Autumn Budget 2024
PolicyEngine projects the reforms to employer NI would raise £23 billion in 2025 and affect two thirds of people.
26 October 2024
Levying employer National Insurance on pension contributions
PolicyEngine estimates the now-scrapped Autumn Budget reform would have raised between £10 and £18 billion per year, depending on how employers pass it on to wages.
24 October 2024
Autumn Budget policy choices
PolicyEngine estimates that four reported tax reforms would raise £23 billion per year
17 October 2024
Labour's reforms to VAT tax on private schools
PolicyEngine projects Labour's private school tax plan would raise £7.7 billion over five years, mainly affecting wealthier households.
14 August 2024
Validation against the Survey of Personal Incomes
Evaluating PolicyEngine's model performance against the UK SPI.
29 June 2024
The Labour Party Manifesto
PolicyEngine's comprehensive impact score.
12 June 2024
The Conservative Manifesto
PolicyEngine's comprehensive impact score.
11 June 2024
The Liberal Democrat Manifesto
PolicyEngine's comprehensive impact score.
28 May 2024
The Triple Lock Plus
PolicyEngine estimates the impact of the UK government's proposed pension uprating policy reform.
16 April 2024
PolicyEngine's Spring 2024 update
How PolicyEngine compares to the latest external forecasts.
6 March 2024
Spring Budget 2024
PolicyEngine estimates the impact of the UK Spring Budget.
4 March 2024
Spring Budget 2024 proposals
PolicyEngine estimates reported likely tax-benefit reforms ahead of the UK Spring Budget.
4 December 2023
Autumn 2023 model calibration update
Evaluating PolicyEngine's model performance with the latest official statistics.
22 November 2023
Autumn Statement 2023 tax-benefit reforms
Chancellor Jeremy Hunt just announced National Insurance cuts and benefit uprating. We've evaluated these reforms.
4 November 2023
New King's College London research uses PolicyEngine
A ‘Citizens' Economic Council' explores PolicyEngine-scored tax-benefit impacts.
7 August 2023
Repealing the Universal Credit two-child limit
How removing the limit of some benefits to two children would affect the UK in 2023.
26 April 2023
Digital Public Goods Alliance recognizes PolicyEngine as a Digital Public Good
The UN-endorsed initiative highlights PolicyEngine's open source approach to supporting the Sustainable Development Goals.
3 April 2023
Revolutionizing policy analysis with AI
Discover PolicyEngine's new GPT-4 integration and audience modes.
28 March 2023
Breaking down policy impacts by wealth decile
Income isn't everything.
17 March 2023
Automate policy analysis with PolicyEngine's new ChatGPT integration
Score an economic impact in a few clicks. Write a report in one more.
15 March 2023
Analysis of the Spring Budget 2023
PolicyEngine analysis estimates the impact of the EPG extension and the fuel duty freeze.
8 March 2023
Breaking down poverty impacts by sex
PolicyEngine estimates the impact of customisable policy reforms on poverty — overall, by age, and now by sex.
5 March 2023
The UK's extended Energy Price Guarantee
Analysis by PolicyEngine on the expected effects on income, poverty, and inequality.
15 February 2023
OpenFisca wins Edge of Government's Innovation Award
The success of Rules as Code and its impact on citizens.
9 February 2023
Reform UK's Emergency Recovery Plan
See the UK party's proposed deficit-funded tax cuts in PolicyEngine
12 January 2023
The New PolicyEngine
We're taking economic policy to the next level with the most accessible tax and benefit model ever built.
12 January 2023
From idea to impact: scoring a policy reform on the new PolicyEngine UK
A walkthrough of the new app on a UK tax-benefit reform.
30 December 2022
PolicyEngine's 2022 year in review
A year of launches, analysis, and building for the future.
10 November 2022
From OpenFisca to PolicyEngine
OpenFisca has catapulted our progress, and now we've forked it into our own microsimulation framework.
23 September 2022
Tax cuts in Prime Minister Truss's Growth Plan 2022
See the impact on the population and on your household in PolicyEngine UK.
22 September 2022
Stamp duties in PolicyEngine UK
The Times reported yesterday that Prime Minister Liz Truss will announce plans to cut Stamp Duty this week. PolicyEngine now supports…
16 September 2022
Prime Minister Liz Truss’s energy bill price cap
See the impact in PolicyEngine.
29 August 2022
Raising the marriage allowance from 10% to 100%
See the reform in PolicyEngine.
1 August 2022
Rishi Sunak’s proposal to cut the basic rate to 16 percent
See the interactive simulation on PolicyEngine
26 May 2022
Impact of the Chancellor’s Cost of Living Support package
See the analysis in PolicyEngine UK
29 April 2022
How developers can explore the PolicyEngine API
The UK API explorer and US API explorer describe variables and policy parameters in our models.
23 April 2022
How PolicyEngine estimates the effects of UK carbon taxes
By fusing datasets with machine learning, we empower anyone to integrate custom carbon taxes with other tax and benefit reforms.
7 March 2022
How machine learning tools make PolicyEngine more accurate
Today, we're launching new survey weights that cut deviations from administrative statistics by 97%.
26 January 2022
The Green Party Manifesto at PolicyFest
Explore the Green Party Manifesto on PolicyEngine.
29 December 2021
PolicyEngine's 2021 year in review
PolicyEngine's inaugural year was a substantial one for public policy.
4 December 2021
Income Tax cuts Rishi Sunak is reportedly considering
Explore the basic rate and additional rate cuts in PolicyEngine.
30 October 2021
Analysing Autumn Budget Universal Credit reforms with PolicyEngine
See how the reform affects the UK population or your household.
15 October 2021
Make Everyone a Policymaker
Today we're (re)launching PolicyEngine to give the public unprecedented insight into the tax and benefit system.
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