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New ISA Proposal Impacts the UK Mortgage Market for Buyers

A new ISA proposal aims to simplify savings for first-time buyers, addressing deposit challenges and credit issues in the UK mortgage market.

By David Sampson
5 August 2026
3 min read
UK first time buyer mortgage article image for New ISA Proposal Impacts the UK Mortgage Market for Buyers

TL;DR

  • A new ISA is proposed to replace the Lifetime ISA, simplifying government bonuses and eliminating withdrawal charges.
  • this aims to assist first-time buyers who struggle with deposits and credit issues.

Written by David Sampson for Mortgage118. Last updated 5 August 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

The UK mortgage market is set to see a significant shift with the proposed introduction of a new Individual Savings Account (ISA) aimed at supporting first-time buyers. This initiative seeks to simplify the process of saving for a deposit, addressing one of the most considerable barriers to homeownership in the UK.

What are the key changes to the ISA?

The proposed new ISA would replace the existing Lifetime ISA (LISA), introducing a more straightforward structure for government bonuses and removing potential withdrawal charges. This change aims to make it easier for first-time buyers to save for their home deposits, which has been identified as a significant hurdle in achieving homeownership.

How do deposits impact first-time buyers in the mortgage market?

Saving for a deposit is often one of the most challenging aspects for first-time buyers. Many individuals find it difficult to gather enough savings, with 5% deposits being common. However, the deposit is just one part of the equation. Even after saving, some aspiring homeowners encounter unexpected challenges that can hinder their ability to secure a mortgage.

Who are the borrowers at risk of slipping through the cracks?

There is a specific group of borrowers who do not fit neatly into the criteria of prime lenders. These individuals may have stable incomes and the ability to afford mortgage repayments but struggle due to minor credit issues or a thin credit file. This situation leaves them in a precarious position, as they are often overlooked by lenders who may not recognize their potential due to these factors.

What this means for first-time buyers and lenders in the mortgage market

For first-time buyers, the proposed ISA changes are a welcome development, but it is important to understand that deposits are not the sole challenge. Lenders need to adapt their criteria to better accommodate those who fall outside prime lending thresholds. Feedback from brokers indicates a need for more options for clients who do not meet standard criteria, as many borrowers face dual barriers of low deposits and credit issues.

As lenders are encouraged to rethink their approach, increasing the maximum loan-to-value (LTV) on near-prime products to 95% is a step in the right direction. This adjustment could help more first-time buyers access the mortgage market, thereby stimulating activity across the housing ladder.

Frequently asked questions

What should first-time buyers do to prepare for mortgage applications?

First-time buyers should focus on improving their credit scores by managing debts responsibly and ensuring timely payments. Additionally, they should save as much as possible for a deposit and explore various mortgage options, including those tailored for near-prime borrowers.

How can lenders better support non-prime borrowers?

Lenders can support non-prime borrowers by developing more flexible lending criteria that account for minor credit issues and thin credit files. This includes offering products with higher LTV ratios and considering alternative data when assessing creditworthiness.

About David Sampson

David Sampson writes about the UK mortgage market for Mortgage118, covering specialist lending, market trends, and practical advice for borrowers. All content is reviewed for accuracy against FCA guidelines and current market data.