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From OBR model criticized for mispricing growth and omitting shocks

How could the criticism of the OBR model affect Jeremy Hunt's policy decisions?

Possible What happens if… A possibility worth considering, not a forecast.

Jeremy Hunt's fiscal planning may be challenged by OBR model flaws The criticism targets the Office for Budget Responsibility's (OBR) economic model, which is reported to treat economic behavior as linear and only capture first-order effects. This model also omits major shocks, such as a closed Strait of Hormuz. Since the OBR provides independent fiscal forecasts that constrain Jeremy Hunt's policy formation, the flaws in the underlying model could compromise the accuracy of the financial constraints he uses for planning.

Reported by 1 independent outlet Written Oct 24
Effect
Mild negative
How direct
Brind's reasoning
When
Within months
The story
Gone quiet

How it reaches Jeremy Hunt

Reported by news outletsBrind's reasoning

Tap any step to see the evidence behind it.

The facts so far

As reported. Each one links to where it comes from.

  • The OBR model assumes people and firms respond in a single, proportionate way.cityam.com
  • The model only captures first-order effects.cityam.com
  • The model omits shocks like a closed Strait of Hormuz.cityam.com
  • OBR provides independent fiscal forecasts that fundamentally inform and shape Jeremy Hunt's budget and spending plans.cityam.com

Why it matters

The OBR is a key independent body that quantifies the government’s headroom, determining its room to tax and spend. For politicians like Jeremy Hunt, the OBR's forecasts are critical inputs that constrain and guide their policy decisions, making the accuracy of the model vital for fiscal credibility.

This criticism is part of a broader debate about the need to reform the OBR, with some calling for a root-and-branch review to improve forecasts against which fiscal rules are judged.

What we don't know yet

  • Will the OBR undergo any reforms to address the criticisms of its economic model?
  • How will Jeremy Hunt's team adjust its policy planning if the OBR forecasts are deemed unreliable?

What would change this answer

A major economic shock occurs, such as a closed Strait of HormuzThe OBR's failure to account for such events would immediately expose the model's limitations, increasing the pressure on Jeremy Hunt's policy credibility.
The OBR accepts recommendations from an external review, similar to the Bank of England's 2023 reviewThe model's credibility would improve, reducing the risk that its forecasts negatively affect Jeremy Hunt's policy formation.

Who else could feel it

Other possible ripples from the same event.

Reporting

Keep going

The full eventOBR model criticized for mispricing growth and omitting shocks Everything aboutJeremy Hunt

Brind's analysis is written by AI from the reporting linked above and can be wrong. This explainer is a possibility worth considering, not a forecast: steps marked as Brind's reasoning are not stated in the reporting. It is not investment advice; do your own research.