Downing Street Fiscal Sandbox

UK Budget & Corporate Confidence Sim · Autumn Despatch
Presets:
“Boring budgets don’t win elections — keeping the surprise factor alive keeps voters engaged, but leaves businesses on edge.”
— James Smith, ING Financial Markets
OBR Fiscal Headroom Target > £15.0B
£14.2B -£4.8B
Buffer against Treasury rolling debt ceiling.
Voter Efficacy / Appeal Polling Parity
54% +7.4%
Electoral buzz driven by tangible front-line pledges.
10Y Gilt Spread Risk Safe < +25 bps
+28 bps +14 bps
Bond vigilante premium on unexpected borrowing.
Business Sentiment Index Baseline 100
92.4 -7.6 pts
Corporate capital expenditure willingness.
Public Services Score Standard 70/100
76/100 +9 pts
NHS waitlists & regional transit throughput.

Despatch Box Policy Levers

8 Levers Active
1. Revenue & Taxation Levers
25.0%
Baseline headline rate on taxable company profits.
+£8.0B
Equalizing CGT with income bands & asset surcharges.
£6.5B
Targeted levies on excess upstream energy & bank margins.
+2 Yrs
Frozen personal allowance brackets capturing inflation.
2. Investment & Public Services
£14.0B
Northern Powerhouse rail, municipal bus networks & R&D.
+5.5%
Above-inflation wage settlements to halt industrial action.
£8.0B
Great British Energy match capital & grid decarbonization.
£5.0B
Unannounced fuel duty freeze, child benefit thresholds, or stamp duty cuts.
3. Borrowing Horizon & Fiscal Rule Flexibility
Moderate (Public Investment Exempt)
Rule redefined to exclude productive capital investment from the 5-year debt-to-GDP ceiling.
Net Budget Allocation & Yield Breakdown Net +£2.5B
Taxes: £38.5B
Spend: £34.5B
Borrow: £12.0B
Revenue Raised: +£38.5B Total Allocations: £36.0B Net Headroom Shift: +£2.5B
Business Sector Confidence Matrix Base = 100
Finance & City of London 88 / 100
Tech & Venture Capital 94 / 100
Manufacturing & Aerospace 102 / 100