Tax Advice

Landlords: How to reduce the impact of mortgage interest relief changes

28 Oct 2015

Many landlords will see taxes increase and profits decrease as a result of the summer budget, with the chancellor announcing plans to remove mortgage interest relief.

What’s changed?

Under current rules, mortgage interest is an allowable expense for landlords. When calculating taxable income, landlords deduct costs including mortgage interest relief from rental income.

Under the new regime, expenses such as repairs and estate agent fees will still be allowable expenses, but higher rate tax payers’ entitlement to mortgage interest relief will be significantly reduced.

How do the changes to mortgage interest relief work?

Let’s assume a higher rate tax payer buys a property for £550k with a 75% mortgage and 3.5% interest rate. They rent out the property for £425 per week.


This landlord has seen net proceeds fall substantially from £4,020 to £1,140.

Not all bad news

There are some mitigating factors and most landlords will not suffer as much as the example above.

Landlords who pay basic rate tax (earnings under £40k) will see no change in their net proceeds. The new tax relief system will entirely offset the change in treatment of mortgage interest.

Over the past decade, especially in London, many landlords have experienced significant capital and rental price growth. As a result, interest payments often represent a smaller percentage of income than the example above. The change in tax rules has a lesser impact on landlords with smaller mortgage costs.

Finally, the new rules will be phased in over a period of four years. Starting from the 2017/18 tax year, the impact will kick in and increase year on year until 2020/21, at which point it will be fully implemented.

Keir Wright-Whyte


Managing Director

0207 043 4000

About the author

Originally graduating with a degree in geography from Edinburgh University, Keir claims that he was then tricked into becoming an accountant by one of the UK's top 5 accountancy practices.The deception extended to the usual training in audit and associated activities.

Keir subsequently worked in a number of advisory roles with clients including in the energy trading, pharmaceuticals and financial services sectors.

He loves working at Accounts & Legal because of the variety of work and clients, the excellent team ethos and morale, the importance placed on genuinely helping and being useful for clients and because he believes what he does matters to clients and helps the firm.

Keir's primary role is to ensure that new clients with complex businesses or needs are on-boarded in the best way and he is a "trouble shooter" both for clients and where complex issues arise internally. He also helps the accounting teams strive to improve what we do for clients, whether processes or services.

When not debiting or crediting, Keir has a penchant for fixing old buildings, skiing, surfing and cycling.


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