Barclays has changed its affordability model in a way that could mean some borrowers access meaningfully more debt per property. For a portfolio investor, that is worth paying attention to.
According to Mortgage Finance Gazette, Barclays communicated the changes to brokers in April 2026. The updates cover both residential and BTL (buy-to-let) lending.
What Changed on the Residential Side
The headline residential change is an increase to LTI (loan-to-income ratio) multiples for joint applicants. According to Financial Reporter, joint customers earning between £75,000 and £100,000 combined can now borrow at 5.5x income, up from 5x. Joint customers earning between £45,000 and £60,000 can now access 5x income, up from 4.49x.
Barclays has also lowered the stress rate (the higher rate lenders use to test if you can afford repayments) on residential mortgages up to 85% LTV (loan-to-value), according to Mortgage Solutions. The effect: some applicants who previously hit a ceiling now have more room.
According to Mortgage Finance Gazette, a family could potentially borrow up to £30,750 more as a result of these combined changes, subject to their individual circumstances.
From a portfolio perspective, the residential changes matter most if you hold properties in your personal name or if you are using a residential mortgage on a primary residence to free up capital for further acquisitions elsewhere.
The BTL Dynamic Stress Rate
The more interesting move for active investors is the BTL change. Barclays has replaced its fixed BTL stress rate with a dynamic one. According to Mortgage Finance Gazette, the stress rate will now be set as a margin above the borrower's chosen product rate, rather than a fixed figure applied across the board.
The practical result is that when product rates are lower, the stress test eases in proportion. According to Mortgage Finance Gazette, this could increase BTL borrowing capacity by as much as £20,000 in some scenarios.
If you hold or are targeting a portfolio of five to twelve properties, the compounding effect across multiple refinances could be significant. Each additional £10,000 to £20,000 of accessible debt per property is capital you do not need to bring from your own balance sheet. That changes the return on equity calculation (the profit you earn relative to the capital you put in) on each deal.
What This Means Across the Cycle
Barclays is not alone in this direction. Several major lenders have expanded their affordability criteria across both residential and BTL products over the past twelve months. The trend is clear: lenders are loosening, not tightening.
That does not mean unlimited borrowing makes sense. Stress rates exist for a reason. What it does mean is that affordability is less likely to be the binding constraint it was twelve months ago for investors who qualify under the new bands.
You may wish to run your existing portfolio properties through a broker with the updated Barclays criteria to see whether any refinance opportunities now stack up that previously did not.
