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Portfolio Landlord Mortgages

The definitive guide to portfolio landlord mortgages, typical rates and terms, and what UK portfolio mortgage lenders will consider in deciding whether to land to a new applicant.

Almas Uddin
Almas Uddin

Founder and Mortgage Advisor

Almas Uddin2024-07-17
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Portfolio Landlord Mortgages

With the strong investment property market in the UK, there are millions of landlords running a buy to let business with a portfolio of investment properties. Portfolio mortgages are one option to effectively manage a buy to let business and provide streamlined funding support.

How do portfolio mortgages work?

Portfolio lenders offer mortgages to landlords with a buy to let business who have multiple properties within their investment portfolio.

This type of mortgage covers all the properties within that portfolio, rather than having separate mortgages against each.

Business landlord mortgages are an umbrella mortgage, incorporating your whole property portfolio into one account, with lending from one provider. This makes it much easier to track, secure economies of scale, and ensure you are getting the best rates available for your buy to let business.

Each buy to let mortgage company has their requirements, but typically they will consider offering business landlord mortgages to investors with at least four properties.

Property or loan details

Error: Property must be valued at £50,000 or more.

Error: Estimated rental income must be between £1 and £99,999.

Based on your details, you can borrow up to:


This calculator is an estimation of how much you could borrow. If you’re ready to take out a mortgage, speak to a Revolution brokers to see what options are available.

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Understanding the buy-to-let property business

Portfolio mortgages fall into the same category as buy-to-let mortgages, and so are regulated by the Prudential Regulation Authority (PRA). Various rules apply to portfolio lenders, which impact how they assess each application for lending.

The process of securing a mortgage against a buy to let business can be lengthy, but business loan broker can help to streamline this process.

We will help you understand the affordability criteria before you apply, and recommend specialist buy to let mortgage companies who can offer you the lending you require.

Affordability assessments for buy-to-let mortgages

Business landlord mortgages rely on fairly strict affordability criteria, which look at more than the rental income and mortgage costs. Lenders also need to consider your tax circumstances, since the tax regulations for buy-to-let landlords have become stricter and could impact the affordability of the loan.

This assessment is called stress testing and considers whether you will still be able to afford your mortgage repayments if the interest rate increases during the loan term.

Who falls under the term portfolio landlord?

Most portfolio lenders will lend to landlords who have four or more investment properties that are mortgaged.

This means that portfolio mortgages are not available if you own three properties or less, or own more than four properties but less than four are mortgaged.

What factors do buy to let mortgage companies consider?

Different lenders have their criteria, but when assessing an application from a buy to let business they will look at:

  • How many properties you own
  • What the mortgage lending is like on each
  • How experienced a buy to let landlord you are
  • Your business stability including assets and liabilities
  • The expected cash flow from your portfolio
  • Other revenue streams

The criteria used vary widely, so it is essential to use an expert in business landlord mortgages before you proceed with taking out a portfolio mortgage.

Call Revolution Brokers on 0330 304 3040 or drop us an email at [email protected], and we will ensure you have the most cost-effective portfolio mortgage option in place.

Almas Uddin
Almas Uddin

Founder and Mortgage Advisor

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Frequently Asked

Yes, you can - there aren't any limitations to how many mortgages you can have.

Some lenders will have their restrictions, but Revolution Brokers work with many specialist buy to let mortgage companies who understand the market and can provide competitive offers to help your buy to let business flourish.

The most crucial factor is making sure you have up to date information about each property in your portfolio, what it is worth, what it is valued at, and what your next 12 months of rental income look like.

The tax rules for property investors tend to change each new budget, and so lenders need to incorporate this into their affordability assessments.

For example, a property purchased as an additional home, or as a second or subsequent property to let will attract a higher stamp duty rate.

There are also tax implications with changes to tax relief on buy-to-let income. Previously, tax relief was available on the interest cost of buy-to-let mortgages, meaning that these costs could be deducted from profits to lower the income tax liability.

This has now changed, and this tax relief is no longer available. The change will likely increase the tax cost for portfolio investors; however, it does not impact commercial landlords.

If you are considering expanding your property portfolio or taking out a new mortgage through a portfolio lender, then it is critical to understand the tax implications and costs.

There are lots of ways to structure a buy to let business, and the most appropriate for you will depend on your circumstances and your portfolio.

For example, you might choose to set up your business as a limited company rather than as a sole trader, which might produce tax efficiencies.

Contact Revolution Brokers today to see how business landlord mortgages stack up, and whether you can make significant savings in your mortgage interest costs.

It could be - although this all depends on your portfolio and your buy to let business. There are different types of limited company, generally separated into a trading company or a special purpose vehicle (SPV).

Many buy to let businesses choose to set up an SPV since more mortgage lenders accept applications from this type of business.

Some lenders will apply a more generous stress test to a limited company than they would for an individual applicant. This is because a limited company tends to be more tax-efficient, so there is less risk that changes in tax regulations would render the portfolio mortgage unaffordable.

Potentially, yes. If you have multiple mortgages with multiple providers, it can be challenging to keep track of the costs.

Consolidating that lending into one portfolio mortgage may reduce the overall costs you are paying, given that the borrowing will be of a higher value and potentially at a much lower LTV ratio.

In the same way as for a buy to let business run as a sole trader, there aren't any regulations that limit the number of mortgages you can have.

However, some lenders will have limits on their total appetite for exposure and may be reluctant to offer to lend for a new investment or remortgage if you have multiple other investment properties.

There are lots of factors to consider when deciding the best route to finance your investment properties. These include:

  • How much deposit you have available - the minimum for a buy-to-let mortgage is usually between 15-25%.
  • Whether you intend to remortgage an existing property to raise the deposit finance.
  • How much equity you have in your portfolio, or will have in a new property investment.
  • What LTV value you can borrow at, and whether you have sufficient equity to meet this.

Usually, it is easier to secure mortgage lending at a lower LTV, since the risk to the lender is reduced. If you need to borrow at a higher LTV ratio, you will generally expect to pay a larger deposit and have less competitive terms.

This often depends on your experience, credit rating, age and purpose of borrowing. Most mainstream lenders offer as high as 95% LTV for residential properties but cap this at 85% for commercial purchases.

Portfolio mortgages are a specialist product, and it is vital to deal with a buy to let mortgage company who understand this sector.

There are multiple lenders within the market, all with individual criteria and product offers. You can even secure portfolio mortgages through high street lenders, although the rates and conditions may be prohibitive when compared to specialists within the field.

For example:

  • NatWest offer portfolio mortgages for 4+ buy to let properties, but will not lend to limited companies. They offer lending dependent on landlord experience, whether you use a letting agent, and what you plan to do with the portfolio in the future.
  • Santander only offers portfolio mortgages for remortgages without needing to raise capital.
  • Virgin offer business landlord mortgages, but limit their lending to 5 properties in the same postcode. Applicants must have at least 24 months experience, and while personal income must be verified, it will not be considered as part of the affordability assessment.
  • Barclays offer business landlord mortgages, with an in-depth evaluation of individual and rental income; existing credit, portfolio, current occupancy levels and future need for funding.

These terms might not be suitable for all buy to let businesses, and often more competitive rates can be achieved from niche lenders who specialise in the market.

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FCA disclaimer

The content included in our articles, blogs, web pages and news publications is based on information accurate at the time of writing. Note that policies and criteria can change regularly throughout the UK mortgage lending market, and it remains essential to contact the consultation team to receive up to date guidance. The information included on the Revolution Brokers site is not bespoke to any circumstances or individual application scenarios and therefore is not intended to be used as financial advice. The content we share is designed to be informative and helpful but cannot be relied upon to provide individual advice relevant to your mortgage requirements. All Revolution team members are fully qualified, trained and experienced to provide mortgage advice of an independent nature.

We collaborate with lenders and providers who are regulated, authorised and registered with the Financial Conduct Authority (FCA). Should you require specific mortgage borrowing types, some products such as buy to let mortgages may not be FCA regulated. The Revolution team can provide further information about regulated and unregulated lending as required. Please remember that a mortgage is a debt which is secured against your home or property. Your home can be at risk of repossession if you do not keep up with the repayments or encounter any other difficulties in managing your mortgage borrowing responsibly. This also applies to any remortgage or home loan secured against your property, including equity release products.

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