Business leaders expressed frustration with ministers on Monday amid a growing budget backlash that bosses said would trigger an “avalanche of costs” and leave them with no choice but to slash investment and increase prices.

Sky News has learnt that bosses of large retail and hospitality companies and trade associations told Jonathan Reynolds, the business secretary, that last week’s budget risked damaging consumer confidence and exacerbating challenges facing the UK economy.

Among the dozens of companies represented on the call are said to have been Burger King UK, Fuller Smith & Turner, Greene King, Kingfisher and the supermarket chain Morrisons.

Mr Reynolds is said to have acknowledged that Rachel Reeves‘s inaugural fiscal statement had “asked a lot” of British business, with James Murray, the financial secretary to the Treasury, understood to have described it as “a once-in-a-generation budget”, according to several people briefed on the call.

One insider said that Nick Mackenzie, the chief executive of Greene King, had highlighted that the increase in employers’ national insurance (NI) contributions would cause “a £20m shock” to the company, while Fullers is understood to have warned that it would be forced to halve annual investment from £60m to £30m as a result of increased cost pressures.

Rami Baitieh, the Morrisons chief executive, told Mr Reynolds that the budget had exacerbated “an avalanche of costs” for businesses next year, and asked what the government could do to mitigate them.

Sources added that the CBI, the employers’ group, said its impact would be “severe”, while the British Beer & Pub Association added that there was now a disincentive to invest and flagged “a tsunami” of higher costs.

The range of comments on the call with ministers underlines the scale of discontent in the private sector about Labour’s first budget for nearly 15 years.

Only a small number of interventions during the discussion are said to have been in support of measures announced last week, with the Federation of Small Businesses understood to have praised the doubling of the employment allowance, which would see many of the smallest employers having their NI bills cut by £2,000.

The Department for Business and Trade has been contacted for comment, while none of the companies contacted by Sky News would comment.

Two of Britain’s biggest food retailers will this week face pressure to publicly disclose whether they expect a fresh spike in prices next year as the industry grapples with huge tax hikes imposed in last week’s budget.

Sky News understands that Marks & Spencer (M&S), which will unveil half-year earnings on Wednesday, and J Sainsbury, which reports interim results the following day, are collectively facing an additional bill of close to £200m as a result of changes to employers’ national insurance contributions (NICs) announced by Rachel Reeves, the chancellor.

Industry sources said the pressure on pricing would be “intense” given the thin margins on which the big supermarkets already operate.

“Food price increases from next April are inevitable,” said one.

The warning comes a day after Ms Reeves told Sky News that “businesses will now have to make a choice, whether they will absorb that through efficiency and productivity gains, whether it will be through lower profits or perhaps through lower wage growth”.

Pointedly, she did not highlight the prospect of higher prices at the tills, with some retailers now weighing whether to explicitly blame the government for impending price increases – a move which will trigger renewed inflation in the UK economy.

The grocery industry is expected to be among the hardest-hit by the changes to employer NICs, particularly after the chancellor slashed the threshold at which businesses become liable for it to just £5,000.

Tens of thousands of people employed part-time in the sector earn between that sum and the current threshold of £9,100.

The first major retailer to report financial results since the budget will be Primark’s parent, Associated British Foods (ABF), on Tuesday.

Insiders downplayed the risks of price hikes from Primark given its track record of absorbing inflationary pressures without passing them on to consumers.

ABF’s additional employer NICs bill is expected to be in the region of £25m, according to one analyst.

Overall, the retail sector could end up paying billions of pounds of additional tax given the scale of its workforce.

Ms Reeves has vowed to raise £25bn extra annually from the changes to employer NICs.

In addition to that, the rise in the national living wage will add a further burden to the financial pressures facing the retail industry.

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Prior to the budget, Stuart Machin, the M&S chief executive, urged the chancellor not to increase taxes on it, calling them “a short-term, easy fix”.

“When I hear about plans to increase national insurance, a tax with no link to profit which hits bigger employers like us and our smaller suppliers, I’m concerned.

“The chancellor was right in the past to call national insurance a tax on workers.”

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Jonathan Reynolds, the business secretary, will hold talks with British business leaders later on Monday about the impact of the budget.

A number of executives will be given the opportunity to ask questions on a call in which more than 100 companies are expected to be represented, although one boss who is critical of many of the budget measures said they were likely to be prevented from voicing their concerns publicly on the call.

ABF, M&S and Sainsbury’s all declined to comment.

Hopes for consecutive interest rate cuts by the Bank of England over the next two months have been dampened by the UK government’s recent budget, economists have warned.

These rate cuts typically reduce borrowing costs for consumers and businesses over time.

The likelihood of back-to-back cuts slipped as the market digested last week’s statement, with the probability of a cut in November currently standing at 90%, but 65.2% for another in December, according to Refinitiv data. This is sharply down since last week.

The budget, which expanded fiscal spending by 1.2% of GDP for the coming year, is expected to reduce slack in the economy that might otherwise help lower inflation, according to Pantheon Macroeconomics.

“The positive data flow over the past month that put consecutive rate cuts on the table for the Monetary Policy Committee (MPC) in November and December has been erased by the budget,” Pantheon’s chief economist Robert Wood said.

Markets reacted with hostility to last week’s fiscal statement, with the pound falling sharply and gilt yields – the interest rate paid by the government – rising.

The Office for Budget Responsibility (OBR) forecasts the budget will add 0.5 percentage points to the Consumer Price Index (CPI) in 2025.

Earlier in October, Bank of England governor Andrew Bailey suggested that the MPC could take a more “aggressive” approach to rate cuts if inflation data continued to improve. However, Pantheon economists cautioned that the MPC is now likely to proceed more cautiously, wary of the inflationary impact of the budget’s fiscal loosening.

Pantheon said it now expects the MPC to deliver one more rate cut this year, potentially at this week’s meeting, followed by a 25-basis-point reduction each quarter in 2025, one fewer than previously anticipated.

“All told, we expect one further cut this year, at this week’s meeting,” Pantheon adds. “This is one fewer than we expected at the time of our last forecast review. The market is taking a similar view, with pricing now reflecting a full 25bp less easing by March than before the budget.”

Market expectations have also shifted, now reflecting a full 25 basis points less easing by March than prior to the budget.

The picture is different in the United States, where economists still expect two rate cuts before the end of the year.

Like the MPC, the US Federal Reserve will meet on Thursday, a day later than usual due to Tuesday’s election, and with inflation still cooling, the Fed is expected to reduce interest rates for the second time this year.

Fed policymakers, led by Chair Jerome Powell, are anticipated to lower the benchmark rate by a quarter point, bringing it to around 4.6%, following a half-point cut in September. Economists project another quarter-point reduction in December, with further cuts possibly coming next year.