Discussions are under way in Downing Street over whether to scrap some of the contentious proposals in the chancellor’s tax-cutting mini-budget, Sky News understands.

The proposed changes to corporation tax and dividend tax are understood to be under discussion.

Downing Street insisted earlier on Thursday that there will be no more U-turns on policies in the government’s tax-cutting mini-budget.

Truss is out ‘and we have the numbers’, says Tory MP – politics latest

Kwasi Kwarteng, the chancellor, abandoned the plan to abolish the highest 45% tax rate last week.

Asked to confirm there would be no further reversals, the prime minister’s official spokesman said: “Yes, as I said to a number of questions on this yesterday – and the position has not changed from what I set out to you all then.”

Liz Truss faces open revolt in her party over the £45bn package of unfunded tax cuts in the mini-budget, which unleashed chaos in the markets when it was announced last month.

Ms Truss and Mr Kwarteng have said the cuts are needed to get the economy growing. Data published on Wednesday suggested the country was heading for recession.

Mr Kwarteng will set out his debt-cutting plan in more detail on 31 October, having bowed to pressure to bring the date forward from 23 November given the economic turmoil.

‘We have to be tax-competitive’

Earlier on Thursday James Cleverly, the foreign secretary, refused to say there would be no more reversals, telling Sky News: “The package the chancellor put forward is pro-growth and is the right answer.”

He said the Halloween statement would give “a more holistic assessment of the public finances and our response to the global headwinds that every democracy, every economy in the world is facing”.

Asked again about whether the government will be sticking to its tax-cutting mini-budget, the foreign secretary said that “ultimately, that mini-budget was about protecting tens of millions of people from unaffordable energy prices”.

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Pressed on the plan to axe the increase in corporation tax from 19% to 25% in April, Mr Cleverly said it is “absolutely right” the government helps businesses to “stay competitive” and “stay afloat”.

“We have got to make sure we can compete internationally with the other places businesses can choose to locate. We have got to make sure we are tax-competitive,” he added.

The Treasury had vowed to reduce the rate of income tax on dividends by 1.25 percentage points.

Kwarteng to meet IMF

Mr Kwarteng is meeting with International Monetary Fund (IMF) leaders in Washington DC today, after the institution’s chief economist said tax cuts threatened to cause “problems” for the UK economy.

The IMF has said Britain’s priority should be tackling inflation rather than adding to the price problem through tax giveaways to achieve economic growth.

In her first PMQs since the mini-budget last month, Ms Truss yesterday pledged not to cut public spending to balance the books – despite a leading economics-focused think tank warning the government is billions short of the sums needed.

The Institute for Fiscal Studies has said the government would have to cut spending or raise taxes by £62bn if it is to stabilise or reduce the national debt as promised.

On Wednesday, Mel Stride, the Tory chairman of the Commons Treasury Committee, said that given Ms Truss’s commitments to protect public spending, there was a question over whether any plan that did not include “at least some element of further row back” on the tax-slashing package can reassure investors.

While David Davis, the Tory former minister, called the mini-budget a “maxi-shambles” and suggested reversing some of the tax cuts would allow Ms Truss and Mr Kwarteng to avert leadership challenges for a few months.