Trusted by researchers and policy organisations
Expert policy analysis
View all research →
Oct 28, 2026
The fuel duty cut extension in the Autumn Budget 2026
The Budget keeps fuel duty at 52.95p a litre to 30 June 2027. We show how the duty and VAT on each litre change, and what this means for households by the fuel they use.
Read more →
Oct 28, 2026
Analysis of the Autumn Budget 2026 energy bill measures
PolicyEngine estimates the £100 Household Energy Payment and the zero rate of VAT on domestic electricity cost £2.81 billion in 2026-27 and raise household net income by an average of £96.
Read more →
Oct 28, 2026
The Pension Tax Allowance in the Autumn Budget 2026
From April 2027, the Pension Tax Allowance removes income tax for most pensioners with total income up to the full new State Pension. We show how the £94 allowance and its £1-in-£3 taper work, and how they pass through to Pension Credit, Housing Benefit and Council Tax Reduction.
Read →
Oct 28, 2026
The adjusted Triple Lock: what changes in 2030 and what it saves
From April 2030 the State Pension rises by the higher of inflation and 2.5%, or by more where needed to hold its April 2029 value relative to earnings. Our pre-Budget, provisional estimate: it saves £11.1 billion in 2039-40 on average across 50,000 paths of prices and earnings, or £7.9 billion once tax and benefits respond.
Read →
Oct 22, 2026
High value council tax surcharge: revenue by constituency
We estimate the surcharge raises £410 million in 2028-29 from owner-occupied main residences in England before behavioural responses, 39% of it from 10 constituencies.
Read →
Tools
PolicyEngine app
Build a tax or benefit reform and see its budgetary and distributional impacts.
Open →
Marriage calculator
Compare a couple's taxes and benefits when living together against living in separate households, modelled with PolicyEngine UK.
Open →
Student loan calculator
Analyse student loan repayments, marginal tax rates, take-home pay, and lifetime costs for UK graduates.
Open →
UK CliffWatch
See where benefit withdrawal and taxes create cliffs and high marginal rates as a UK household's earnings rise, modelled with PolicyEngine UK.
Open →