Our complete analysis of the UK Autumn Budget 2025 is now live.

New interactive dashboard lets you explore how all 9 provisions interact—by income decile, constituency, and year through 2030-31.

Explore: policyengine.org/uk/autumn-budget-2025

Launching GiveCalc for UK taxpayers 🇬🇧

Calculate your Gift Aid tax relief in seconds. Enter your income and donation — see exactly how much you save.

✓ Higher rate relief (40%/45%)
✓ Scottish income tax rates
✓ Personal Allowance taper effects

The UK's first rail fare freeze in 30 years will cost £145m in 2026-27, rising to £775m cumulative by 2030-31.

Read our new report for more on the revenue and distributional implications: www.policyengine.org/uk/research/...

Revenue and distributional impacts vary by behavioural assumptions. Interactive charts let you explore all scenarios.

NEW: How will the £2,000 cap on salary sacrifice pension contributions affect UK workers?

We modelled four behavioural scenarios to show how revenue and distributional impacts vary.

The new high value council tax surcharge will raise £400m/year from £2m+ properties.

Top 10 constituencies = 35% of revenue. Cities of London & Westminster alone: 10%.

Explore our latest Autumn Budget analysis and interactive: www.policyengine.org/uk/research/...

The OBR revised up its inflation and earnings forecasts in the November 2025 Autumn Budget. We compare the projections and explain what changed for PolicyEngine users.

policyengine.org/uk/research/...

NEW: We've modelled the Autumn Budget fuel duty freeze

Key findings for 2026-27:
- £2.8bn revenue cost
- 46.7% of people gain
- Lowest decile: +0.30% income
- Highest decile: +0.11% income
- 0.18% reduction in inequality

www.policyengine.org/uk/research/...

Where would a mansion tax hit hardest?

We mapped 2024 property sales above £2m by constituency. Three central London seats account for 21% of all high-value sales nationwide.

Explore the interactive map and toggle between thresholds: policyengine.org/uk/research/uk-mansion-tax-autumn-budget

We're at capacity for "PolicyEngine 2.0 and the Future of Public Policy Analysis" today at Central Hall Westminster!

Excited to welcome researchers and policymakers for a day of demos, applications, and discussions.

Here's what we have planned 👇

How would changing the VAT threshold from £90k affect revenues?

Our new firm microsimulation model shows:
• £70k threshold: +£640m revenue
• £100k threshold: -£370m revenue
• £120k threshold: -£1.1bn revenue

All estimates for 2026-27.