3 buy-to-let questions you always wanted to ask a mortgage expert

Planning your approach as a buy to let landlord means understanding how deposits, rental calculations and ownership structures influence your long term strategy. The market has changed significantly since 2018, and lenders now have far more detailed underwriting requirements. Below is an updated guide to three common questions landlords still ask when reviewing their property plans.

What percentage deposit should I aim for with a buy to let mortgage?

Your deposit strategy will depend on your goals, experience and overall portfolio plans. If you are at the beginning of your investment journey, you may want your funds to stretch across more than one property. Some landlords choose an 80 percent loan to value mortgage so they can split their deposit and purchase two properties rather than one. Although you may pay a higher interest rate, you could see greater long term gains by increasing the number of assets you hold.

If securing the best available rate is your priority, then a lower loan to value will be required. Many lenders price most competitively at 75 percent loan to value, with the strongest rates typically found at 60 percent loan to value. A small number of lenders offer 85 percent loan to value on buy to let, but these products usually come with a premium due to limited competition.

Regardless of the lender or loan to value, the rental income must support the mortgage through the required rental stress tests. This is especially important under the current tax environment, where interest relief and personal income circumstances can affect affordability. You can find more detail within our main Buy to Let Mortgage page.

How important is rental yield compared to property value?

Rental yield remains one of the most important factors for lenders because it directly determines the size of the mortgage available. A property’s value alone does not dictate how much you can borrow. For example, purchasing a property at £1 million that only supports a £300,000 loan would require a £700,000 deposit, which may not align with your portfolio strategy.

Your choice of location plays a major part. Lower yielding areas such as London and the South East often restrict loan to value options because the achievable rent may not meet lender affordability tests. In contrast, properties in the Midlands and the North often produce stronger yields, which can support higher borrowing. HMOs, in particular, can offer increased rental income, although they come with specialist criteria.

Capital growth also differs considerably by region. Southern markets may provide stronger long term capital increases, while northern markets often deliver higher rental returns. Many landlords choose a blended approach to balance both objectives.

I own several properties. Should I move them into a limited company?

Once you own four or more mortgaged buy to let properties, you are treated as a portfolio landlord. This does not prevent you from borrowing, but it does mean lenders must assess your application in a more business like manner. This includes reviewing your wider portfolio, cash flow and tax position.

Whether you should use a limited company structure depends mainly on your personal tax circumstances. Landlords with significant PAYE income often find a limited company more tax efficient due to the way interest is treated. Others with low or no personal income may prefer to purchase in their own name to utilise personal allowances.

Transferring existing properties into a limited company can trigger stamp duty and capital gains tax, so this decision should always be discussed with a qualified accountant or tax adviser. Our dedicated Limited Company Buy to Let page provides further guidance on when this structure may be beneficial.

Independent buy to let advice from Vincent Burch

We are an independent whole of market broker, offering tailored advice based on your goals, experience and tax position. With thousands of buy to let products available at any time, we will always explain why a particular lender or structure is best suited to your circumstances.

If you are reviewing your portfolio, planning your next purchase, or exploring limited company lending, we are here to help.

Call us on 01603 340644 to discuss your plans.

Looking for more buy to let insights?

If you found this article useful and want to explore the wider buy to let landscape in more detail, take a look at The Complete Guide to Buy to Let Mortgages.

This in depth resource expands on the topics covered here, including rental stress testing, portfolio landlord rules, limited company structures, HMOs, affordability assessments and the latest lender criteria. It is the ideal next step if you are planning a new investment or reviewing your existing strategy.