Based on current macro regime conditions and uk cpi index's historical behaviour in similar regimes, the model projects 139.02 by 2025-12-31 ( +2.1% from 136.1 today). The 68% confidence range is 137.59 to 140.44; the wider 95% range is 136.22 to 141.81. Methodology below the headline.
UK CPI Index Forecast 2026
Quantitative analysis from 284 observations of UK CPI Index history, joined to four universal macro regime classifications. Numbers are computed, not narrated.
Performance by Window[02]
| WINDOW | N | ANN RET | ANN VOL | RET/VOL | HIT % | TOTAL |
|---|---|---|---|---|---|---|
| 1Y | 13 | 3.42% | 0.68% | 5.00 | 83.3% | 3.42% |
| 3Y | 36 | 4.71% | 1.41% | 3.35 | 82.9% | 14.37% |
| 5Y | 61 | 4.62% | 1.54% | 3.01 | 76.7% | 25.32% |
Forecast Approach
regime implied: The current macro regime classification (Goldilocks, Reflation, Stagflation, or Deflation) dictates the expected direction and magnitude of movement, calibrated against historical regime performance.
Key Drivers & Risks
- •Energy prices
- •ECB policy
- •Wage growth
- •Supply chains
Historical Volatility
Moderate: European inflation has structural differences from US
Frequently Asked Questions
What factors could push UK CPI Index higher?▾
The primary drivers that tend to lift UK CPI Index depend on the current macro regime. European markets carry the sovereign debt overhang of the post-2010 era in their pricing. Bund-BTP spreads remain the cleanest gauge of periphery stress, while HICP drives ECB policy expectations. UK macro diverges post-Brexit, with sterling volatility and Gilt-Bund spreads carrying political risk premia that sometimes detach entirely from U.S. moves. Convex tracks these drivers live across the EU/UK Inflation category and flags when multiple forces align in the same direction. See the "Key Drivers & Risks" section on this page for the current list, and check the regime dashboard for how the macro backdrop is currently tilted.
What factors could push UK CPI Index lower?▾
The same transmission channels that drive UK CPI Index higher operate in reverse when conditions flip. The risk drivers listed above map directly to scenarios that, if triggered, would pull this metric in the opposite direction. Convex aggregates these into a scenario-weighted probability distribution rather than a point forecast, so the magnitude depends on which scenarios activate.
Where does consensus see UK CPI Index heading?▾
Rather than publish a point target that goes stale the day after release, Convex assembles consensus from the macro regime classification, active scenario probabilities, and historical base rates. Point forecasts from banks and strategists are worth reading for context, but they typically cluster around the consensus and miss the tail events that actually move markets. The scenario-weighted approach here captures that tail risk explicitly.
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Forecasts are model-based projections derived from current regime classification, scenario probabilities, and historical patterns. They are not investment advice. All investments involve risk.