Landlord tax rises risk shrinking rental supply – survey

Steve Lumley·24 November 2025·5 min read

Landlord tax rises risk shrinking rental supply – survey

Fresh warnings are emerging from the private rented sector that

looming tax changes

could drive more landlords out of the market and push rents higher.

A survey from Pegasus Insight shows the proposed 8% National Insurance levy
on rental income is now landlords’ biggest worry.

More than 8 in 10 describe the idea as ‘very concerning’ with fears rising
that Chancellor Rachel Reeves could introduce the charge in her Autumn
Budget.

On top of that, almost three quarters of landlords are deeply worried about
further Capital Gains Tax changes.

Among those who have already sold or intend to sell within a year, that
jumps to 85%.

Tax rises a threat

The firm’s founder and director, Mark Long, said: “The tax burden is now
seen by landlords as every bit as threatening as regulation.

“The possibility of a new National Insurance charge on rental income is
causing alarm across the sector, not just because it would erode
profitability, but because it would further undermine confidence in what has
already become a heavily taxed form of investment.

“Many landlords feel that another policy shock, on top of CGT and the
Renters’ Rights Act, could tip the balance and force them to sell.”

Landlords assessing sales move

He added: “Every indication from our data is that a growing number of
landlords are reassessing their position.

“If the November Budget adds yet another layer of taxation, we can expect
more to exit the market in 2026, further reducing rental supply at a time of
rising demand.”

The survey also points to a market already shifting with 40% of landlords
saying they will sell at least one property within the next 12 months.

Just 7% of landlords said they expect to buy.

With tenant demand high, any further contraction in supply risks pushing
rents up,

Pegasus

says.

Younger landlords will be hit

The Pegasus report lands alongside a new analysis from Hamptons, which shows
that not all landlords will be hit equally if NI is charged on rental
profits.

It says that landlords under the age of 65 would take the biggest hit if the
proposal became reality.

Currently, individual landlords are not liable for NICs but under the
proposal, they would pay 8% on profits up to £50,270 and 2% above that.

That would be in line with employees, while retired landlords would remain
exempt and limited company structures would not be affected.

Hits BTL profitability

Hamptons says a landlord earning £16,478 in annual rent and paying £7,875 in
mortgage interest would see their tax bill more than double, rising from
£699 to £1,609.

For higher-rate taxpayers, profits could fall to £295, raising questions
about the long-term viability of some portfolios.

Younger landlords, often operating with less equity and more borrowing,
would feel the strain most.

A Hamptons’ spokesperson said: “While the reform would improve parity
between rental and employment income, it risks further reducing the
profitability of buy to let – particularly for those with high mortgage
costs and limited equity.

“The definition of ‘profit’ is key: if NICs are applied before mortgage
interest relief, it would amplify the chances of higher-rate taxpayers
having to pay tax on loss-making properties.

“Unlike the removal of mortgage interest relief (Section 24), which hit
higher-rate taxpayers hardest, this proposal could have a greater impact on
lower-income landlords.”

Student landlords concerned

The managing director of Accommodation for Students, Simon Thompson, said:
“Student landlords will be watching these tax proposals more closely than
anyone because their margins are already stretched.

“A new levy on rental income could make the difference between holding a
property and handing in the keys for some.”

He added: “The Budget’s timing could not be worse for cities already dealing
with student housing shortages.

“If more student homes disappear from the market, universities will feel the
impact almost immediately and you can’t increase supply overnight, students
will be the ones paying the price.”

author
Steve Lumley

Steve Lumley has years of experience writing about property investment and landlord issues in the UK for a range of publications and news sites. A former national newspaper journalist, he brings lots of experience to Accommodation for Students.