The Treasury has deleted a tweet about the potential savings that a first-time buyer could potentially make in the light of the mini-budget following criticism from consumer champion Martin Lewis.

A Treasury post on Twitter had said: “Thanks to the Growth Plan, a typical first-time buyer in London moving into a representative terraced house will save £11,250 on stamp duty & £1,050 on the household’s energy bills – and if they earn £30,000 almost an additional £400 on tax. This is around £12,700 in total.”

Speaking on ITV’s Good Morning Britain, which he was co-hosting on Monday, Mr Lewis said the messaging from the Treasury could give some people “false hope” during the cost-of-living crisis.

A Treasury spokesperson said: “While the figures used were statistically accurate, we recognise that certain assumptions were made about the profile of the typical first-time buyer which were not reflected in this tweet.

“We take responsible messaging very seriously – which is why we have deleted the tweet in question.”

The Treasury’s calculations were based on average house prices in London, using official data.

Earlier, Mr Lewis, interviewing Chief Secretary to the Treasury Chris Philp on Good Morning Britain, said: “Now, on my calculations, to save £11,250 on stamp duty you have to be buying a house as a first-time buyer of £500,000 or more.

“The cheapest fixed-rate mortgage on a £500,000 property with a 10% deposit leaves you with payments of £2,400 a month, which is £28,000 a year.

“But your example is for somebody who earns £30,000 a year. Clearly, they would not get that mortgage. And clearly on £30,000 a year before tax you cannot pay a mortgage of £28,000 a year.

“This seems fundamentally irresponsible for the Treasury to be putting out this kind of statement in the middle of a cost-of-living crisis.”

The MoneySavingExpert.com founder told Mr Philp: “I’m guessing you don’t know about it. But what do you think of your own department putting out these types of messages?”

Treasury messaging
Treasury messaging which had previously been posted on Twitter (PA)

Mr Philp responded: “Well, you’re right, I haven’t seen it, and I’m afraid I can’t see it on the screen because there’s no screen where I’m standing in Birmingham.

“But I imagine, I’m just sort of speculating, when they used the £30,000 to work out the tax saving, they were doing that to illustrate the income tax saving of someone on approximately medium earnings.

“You are right to point out that someone on that particular level of earnings would be unlikely to be able to get a mortgage to fund a £500,000 house, unless, of course, they were doing so with a partner, but I suspect that’s why they did it.”

Mr Lewis replied: “It doesn’t mention the partner’s income and the headline includes all the savings added in one…”

He later asked Mr Philp: “Can I ask you to look at those messages? These are big, bold messages… to have them taken offline in the middle of a cost-of-living crisis, where they give people false hope?”

He added: “Can I ask you to personally take a look at that? It seems irresponsible at the moment.”

Mr Philp said: “You’re right to point out the anomaly between the salary and the house value and I’d be happy to take a look at it.”

The choice of mortgage products on the market fell sharply following the mini-budget, as many lenders pulled deals off the shelves and re-priced their products upwards.

For some home-buyers, higher mortgage rates could outweigh any stamp duty savings they may stand to make.

According to Moneyfacts.co.uk, there were 2,262 residential mortgage products available on Monday October 3, down from 3,961 on the day of the mini-budget.