"It is positive news for first-time buyers, particularly as it is not restricted to new homes, although critics may argue that it will only aid house price inflation."
The scheme will offer incentives to lenders which have "virtually disappeared" during the pandemic, the Treasury said.
The scheme is set to launch to lenders from April and will allow both first-time buyers and current homeowners to purchase properties up to £600,000 with a 5% deposit.
Chancellor Rishi Sunak said: “Owning a home is a dream for millions across the UK and we want to help as many people as possible. Saving up for a big deposit can often be difficult, and the pandemic has meant there are fewer low deposit mortgages available.”
The government first announced plans for a new scheme to increase the number of 95% LTV mortgages last October. Boris Johnson reportedly asked ministers to design the plan, which he said would involve removing stress tests for mortgage applicants, instead extending “a form of state guarantee” to lenders to de-risk the loans.
Mark Harris, chief executive of mortgage broker SPF Private Clients, commented: "Turning ‘generation rent’ into ‘generation buy’ has been a focus for Boris Johnson for a while so the return of 95% LTV mortgages for first-time buyers doesn't come as a complete surprise. This, coupled with the extension of the stamp duty holiday, will result in a Budget which is a real boost for buyers.
"It is positive news for first-time buyers, particularly as it is not restricted to new homes, although critics may argue that it will only aid house price inflation. But without such a scheme would developers be so keen to put spades in the ground? The supply of new housing is nowhere near where it needs to be to satisfy demand.
‘"For those with little in the way of deposit, finding a 95% LTV mortgage has been pretty much impossible in recent months. The odd building society here and there has offered them, with Saffron building society launching at 95% in June but it only lasted a matter of days. Furness BS also has a selection of 95% products but these are restricted to certain postcodes.
"The only other current option to obtain a mortgage at this level is to call upon a third party, typically a parent, to provide extra security in the way of deposits or equity within the ‘guarantor’ property. Not everyone is in a fortunate position to do so.
"The last time there was a mortgage guarantee treasury scheme was via Help to Buy. The mortgage guarantee offering closed to new loans on 31st December 2016 (the equity loan continues, albeit in a revised form today) but by then, many of the high-street names had removed themselves from the scheme and ‘self-insuring’ their 95% offerings."
Mark Hayward, chief policy adviser at NAEA Propertymark, added: “A government backed mortgage guarantee scheme will help first -ime buyers get on the housing ladder at a time when for many owning a home seems an impossible dream. Alongside the potential extension of the stamp duty holiday that we have been calling for, this new scheme will go some way in giving some hope to first-time buyers at a time when the size of deposits required means they fall at the first hurdle.”