Expats ~ Have their Cake…with Top Slicing!
Welcome to the next edition of INSIGHTS covering complex UK mortgages
When it comes to BTL mortgages, lenders in the UK use a test to assess affordability called the ICR – Interest Coverage Ratio. This is where the rent from a property (assessed by the banks valuer) should meet the interest only mortgage payment and a little bit more usually to 125% – 145% of the interest only payment.
Here’s where there is a little complexity, on any mortgage deals that are not 5yrs fixed or more, so lets say a 2 or 3 year deal, the buffer is increased by 2%.
Here’s a quick example:
Property 1 Value £180K on 3 yr deal 5.25% (+2% buffer) = 7.25%
Rent = £900
ICR = £900 / 125% = £720 x 12 = £8640 / 7.25% = £119,172 max borrow
On the 5 year deal 5.45%
ICR = £900 / 125% = £720 x 12 = £8640 / 5.45% = £158,532 max borrow
You can see the difference a 5 yr deal makes with the ICR stress being less punitive. This example showcases the 5 year options that usually help to get to max lend of 75% or 80% on Buy to Let deals.
However in parts of the UK namely London and South East, even the 5 year ICR test, comes up short, because the rental yields aren’t at the same ratio to value as in other parts of the country, like Liverpool, Leeds, Manchester. The effect is if your buying a buy to let in London for £950,000 the likelihood is the ICR test may only enable you to borrow up to 60/65%
TOP SLICING Enters the mix..
More lenders are realising that the ICR test is a clunky tool, the effect of it is, a borrower with high affordability on £300K – £500K annual income would still be limited to what the rental ICR test was limiting the borrow capacity to, forcing the borrower to stump up more deposit.
Therefore Top slicing, allows the lender to use residual personal income to make up the ‘gap’ in ICR calculations and the level of borrowing the client needs. This is a game changer particularly for Higher value property where regional rent yields are not performing like other parts of the UK.
Example:
Property Value £1,250,000 on 5 yr deal 4.89%
Rent = £4250
On the 5 year deal 4.89%
ICR = £4250 / 125% = £3400 x 12 = £40800 / 4.89%
= £834,355 max borrow
MAX LTV 66%
Applying Top Slicing
= £937,500 (75%) Max borrow
In Summary, if your considering a Buy To Let deal then speak with your specialist broker or us ! and we can guide on whether a 5 yr deal is a best fit, additionally if the property is higher end and the rental ICR test is a big ask, it may be best to position the mortgage approval with a lender who is known to apply the Top Slicing flexibility, otherwise you get to post valuation and the deal turns sour, with the client having to find 5%-10% more deposit.
If you would like to discuss this or other aspects of your deal book a call here.
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And now for something completely different… what about buying a 2nd home in London for own use as well as an income generating AirBnB / short term let, is this the best of both worlds ?
Market Updates
- UK biggest lenders have reduced rates to 2022 levels which is encouraging the market read the FT article here.
- What is ahead for the UK property market in 2026, 2027, 2028 ? well no-one can accurately predict, however this report may give some steer and the UK paints a very regional picture, so investors should analyse their hot spots carefully!
- We love the Property Hub team content – but how did Rob & Rob do in their 2025 predictions for the UK market & property. Their end of year pod is a great listen. Get it here.
Next Steps…
Book a Free Discovery call here & if your not sure what a discovery call is all about Ive made a series of videos on what to expect here.
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