How Rachel Reeves bungled a gift from the OBR

How Rachel Reeves bungled a gift from the OBR

How Rachel Reeves bungled a gift from the OBR

Sir Keir Starmer and Rachel Reeves
Sir Keir Starmer and Rachel Reeves have junked plans for income tax rises – Temilade Adelaja/PA

When Rachel Reeves stood up to deliver an unusual speech ahead of the autumn Budget earlier this month, her message was clear: everyone should brace for financial pain.

It was widely interpreted as readying the ground for a manifesto breach and the first rise in the headline rate of income tax in 50 years. “If we are to build the future of Britain together, we will all have to contribute to that effort,” the Chancellor said.

Yet no sooner had the public digested the message than the plan changed. The Chancellor has junked plans for income tax rises, instead opting to target a range of smaller revenue raises.

What prompted the volte-face?

This week the Office for Budget Responsibility (OBR) handed the Chancellor a gift in the form of a smaller-than-feared estimate of the hole in public finances. The tax and spending watchdog is thought to have said it reckons there is a £20bn gap – £10bn less than had been feared.

In an unusual move, the OBR also moved the 10-day forecast window used to calculate borrowing costs, shifting it from a time when they were high to a more favourable period. The delay gives the Chancellor a £1.7bn lifeline, which has helped reduce the repair job she faces.

Two key judgments have probably helped Reeves, James Smith at Resolution Foundation believes.

The first is on pay. He points out that workers have seen bigger pay rises than the OBR had expected, bringing in bigger revenues for the Treasury as they pay more income tax.

Economists had initially believed that companies would look to squeeze wages to bolster their profit margins. “That picture actually looks a bit different now,” Smith says.

The OBR’s assessment includes a judgment on how fast it thinks wages will continue to grow. Depending on just how radical the watchdog has been, it could benefit Reeves by as much as £20bn. A more middle-of-the-road assumption would be a £13bn boost, which is Smith’s prediction.

The second judgment is on productivity. It has been well trailed that the OBR is downgrading its verdict of how fast the economy can improve its productivity, cutting it by 0.3 percentage points. Many economists had expected this would cost the Chancellor £20bn or more.

Reeves even highlighted the big impact in her speech on Nov 4, warning that “a less productive economy … has consequences for the public finances, in lower tax receipts”.

However, the actual hit has probably been less severe, Smith thinks. Weak productivity gains were already largely factored in for three of the five years covered by the forecasts, meaning the blow is more likely about £14bn.

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