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Buy-to-Let Remortgage - Access Broker Exclusive Rates
Whether you want to remortgage an existing buy to let, switch a residential property to buy to let, or release equity from a rental property, this page explains your options and what lenders will look for.
We cover how buy to let remortgages work, including current rates, lender criteria and rental stress tests. You can compare staying with your current lender against remortgaging to a new deal, and understand the impact of fees, early repayment charges and affordability checks.
If you are moving from residential to buy to let, we also explain the difference between consent to let and let to buy, and how lenders assess rental income in each scenario.
Tell us about your plans and we will match you with lenders that fit your circumstances, helping you find a suitable buy to let remortgage based on your income, property and goals.
What is a Buy to Let Remortgage?
A buy to let remortgage involves switching your current mortgage to a new deal on a property that is rented out, or that you intend to rent out. This could mean moving from a residential mortgage to a buy to let product, or replacing an existing buy to let mortgage with a new deal.
For many landlords, this is not just about switching rates. It is often part of a wider strategy, such as improving rental returns, restructuring borrowing, or releasing funds to reinvest in additional properties. Unlike a standard remortgage, lenders focus heavily on rental income and property value when assessing affordability.
Remortgaging a buy to let property may be the only way to keep your rented property profitable. In this climate, it is imperative that you get expert advice from mortgage advisors who know the market, and can search for the best products available for your needs; that’s where we come in.
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The Role of Loan to Value (LTV)
Remortgaging a buy-to-let property can enable you to raise capital, find a better interest rate or get more preferable mortgage terms. For you to understand how much you can borrow or the strength of your remortgage, you will need to understand the LTV (Loan to Value) on the property. The lower the outstanding mortgage is, in comparison to the property value – the more remortgage options you will have available to you on your buy-to-let property.
Your LTV will affect what you can do, depending on your situation:
- Accidental landlords may need to remortgage from a residential deal to buy to let, where LTV limits and rental stress tests will apply.
- Landlords nearing the end of a fixed rate often review their LTV to see if they can move into a lower band and access better rates.
- Portfolio landlords may need to meet stricter LTV limits across multiple properties, alongside additional affordability checks.
- Landlords looking to raise capital can use available equity, with the amount you can release depending on the resulting LTV after the remortgage.
- Homeowners considering let to buy or switching from residential to buy to let will need to meet lender LTV thresholds on both the existing property and any new residential purchase.
Understanding your LTV helps you assess how much you could borrow, whether you can release equity, and which lenders are more likely to accept your application. It also plays a key role in how rental income is assessed through lender stress tests.
Who is a Buy to Let Remortgage Suitable For?
A buy to let remortgage can support a range of landlord scenarios, from single property owners to larger portfolio investors.
Existing Buy to Let Landlords
If you already own one or more rental properties, remortgaging can help you review your current deal and ensure it still suits your financial goals.
Releasing Equity for Investment
If you have built up equity in a property, a remortgage can allow you to access funds for further investment or property improvements.
Switching to a Better Rate or Terms
Landlords often remortgage to secure a more competitive interest rate or move to a deal that better fits their current situation.
Portfolio Landlords Reviewing Structure
If you hold multiple properties, remortgaging can help you reassess how your borrowing is structured.
Landlords Approaching Early Repayment Charges
If your current deal includes early repayment charges, reviewing your options early can help you plan a cost-effective switch.
Responding to Market or Circumstance Changes
Changes in interest rates, rental income, or tax treatment can affect how your mortgage performs. A remortgage can help you adjust your strategy.
Can I Switch my Residential Mortgage to a Buy to Let?
Yes, you can – subject to the terms and conditions of the lenders you’re switching to and from. This route is often used by homeowners who decide to keep their current property and rent it out, rather than sell.
The first thing to consider, though, is your early repayment charge. Let’s say, for instance, you’re on a two-year fixed rate with one year left. Chances are, you will have to pay a penalty to come out of that deal. It’s really important to understand where you are, what the penalties are, and whether it’s better to wait until that charge period ends.
Alongside any charges, lenders will assess rental income potential, loan to value, and overall affordability. In some cases, waiting until the end of a fixed term may be more cost-effective, but this depends on your individual plans.
Considerations when switching to Buy to Let
Some considerations that you should keep in mind when thinking about swapping to buy to let remortgage are:
- Your objectives are more important than the charge – it’s really about assessing that and making sure everybody understands their position.
- How much the property will rent for.
- How much borrowing will be needed to replace the residential mortgage and whether those figures stack up – will they satisfy the criteria of the new lender?
Obviously, these considerations and any other questions you might have, are something that our mortgage advisor team can help you with.
Releasing Equity from a Buy to Let Property
One of the most common reasons for a buy to let remortgage is to release equity.
This involves increasing your borrowing against the property’s value and taking the additional funds as cash. Many landlords use this to expand their portfolio or improve existing properties.
Equity release may be used for:
- Deposits on further buy to let properties
- Renovations to increase rental value
- Restructuring finances across multiple properties
Lenders will still require the rental income to meet affordability criteria, so it is important to assess how the increased borrowing will affect overall returns.
How Much Can You Borrow on a Buy to Let Remortgage?
The amount you can borrow is not just based on the equity left in the property. It’s also a calculation based on the rent that the property can generate.
Most lenders assess this using rental stress tests. These calculate whether the expected rental income meets a required level of cover over the mortgage payments, based on a stressed interest rate rather than the initial deal rate.
In most cases, lenders expect:
- Around 25% equity remaining in the property, with borrowing typically capped at 75% loan to value
- Rental income to cover at least 125% of the mortgage payments for basic rate taxpayers
- Rental income to cover around 145% for higher rate taxpayers or portfolio landlords
- Stress testing to be applied at a higher notional interest rate, which can reduce the maximum borrowing available
For landlords with multiple properties, lenders may also assess the overall performance of your portfolio, including total rental income, outstanding borrowing and exposure to interest rate changes.
Because these calculations are linked to interest rates and lender criteria, how much you can borrow can change over time. Reviewing your options regularly can help you understand whether you could borrow more, reduce your rate, or release equity.
Managing Costs and Early Repayment Charges
Costs may include early repayment charges, arrangement fees, valuation fees, and legal fees.
For landlords currently within a fixed deal, remortgaging your property early and accepting the early repayment charges (ERC) can be a key consideration. In some cases, switching early may still be beneficial if the long-term savings outweigh the upfront cost.
For others, it may be more appropriate to plan ahead and secure a new deal to start when the current one ends.
A clear comparison of costs and potential savings is essential before making a decision.
What Costs are Involved?
You don’t pay stamp duty if you are remortgaging, but if there is any transfer of the equity in the property, then there might be a stamp duty liability. For example, if you’re adding someone to the mortgage and the equity changes, stamp duty may apply. But on a general remortgage from residential to a Buy to Let, there wouldn’t be any stamp duty implications.
Changes in interest rates can have a direct impact on buy to let mortgages, particularly where lenders apply stricter stress testing. If rates increase, this can reduce the amount you can borrow or affect the profitability of a property. For portfolio landlords, this may influence decisions around refinancing, restructuring, or consolidating borrowing. Rental income is another important factor. If yields change or void periods increase, lenders may reassess affordability when you remortgage. Reviewing your mortgage regularly can help ensure your portfolio remains sustainable under different market conditions.Interest Rates, Affordability and Market Changes
Consent to Let vs Buy to Let Remortgage
What is Consent to Let?
Consent to Let or Permission to Let mean exactly the same thing. This is an arrangement with your existing lender to let out your property on a temporary basis. Some lenders limit the duration of Consent to Let to 6–12 months, ranging up to 2 years depending on lender. This is usually intended as a short-term solution.
After those two years it will need to be reassessed – there might be an extension to the agreement, or it may change to a full Buy to Let mortgage.
Some examples of where this might apply would be if you had a work placement overseas, you had to move into a relative’s home as their carer, or perhaps you want to go travelling around the world. In these cases, you could get Consent to Let.
It’s important to know that whilst your mortgage is under Consent to Let, you can’t do any further borrowing on that mortgage, or switch interest rate. If you fall into the standard variable rate, it will have to stay on that rate until such time when you move back into the property and the arrangement can change.
How Quickly Can You Get Consent to Let?
Consent to Let is a lot easier because there’s no legal process or physical valuation process. It’s just a quick application checking the reasons why you want to do so. It’s really down to how quickly the lender can process the application. Anywhere between one and four weeks is typical.
When is a Full Buy to Let Remortgage More Suitable?
If you plan to let your property on a long-term basis, a full buy to let remortgage is usually the more suitable option. It involves switching to a mortgage designed specifically for rental properties, rather than relying on a temporary arrangement.
This may be more appropriate if:
- You intend to let the property indefinitely
- You want to release equity for investment or improvements
- You are looking for a more competitive rate
- You need greater flexibility over borrowing
It can also be a better fit for landlords with multiple properties who need a structure that supports ongoing investment.
It’s important to know that whilst your mortgage is under Consent to Let, you can’t do any further borrowing or switch interest rate. Moving to a buy to let mortgage removes these restrictions and gives you more control.
A full remortgage will require a new application, including rental affordability checks and a property valuation. There may also be costs involved, so it is important to compare your options carefully.
Can I Switch From Consent to Let, to Buy to Let?
Yes, many landlords move from consent to let onto a formal buy-to-let mortgage. This typically happens when letting becomes long-term. If you are looking to make this transition, our team can help you assess lender criteria, rental income requirements, and whether remortgaging now is the right step based on your situation.
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Remortgage Buy to Let Protection & Insurance
When remortgaging a buy-to-let property, it’s crucial to consider the right protection and insurance options to safeguard your investment and income.
Landlord Insurance
Standard home insurance often doesn’t cover buy-to-let properties. Landlord insurance is specifically designed for rental properties and typically includes:
- Buildings insurance – Covers structural damage from fire, flood, or subsidence.
- Contents insurance – Protects furniture, appliances, and other items provided to tenants.
- Liability cover – Offers protection if a tenant or visitor is injured on your property.
- Loss of rent – Compensates you if your property becomes uninhabitable due to damage.
Investing in landlord insurance ensures your property is protected against unforeseen events and gives peace of mind while letting.
Learn About Buildings & Contents Insurance
Mortgage Protection
Mortgage protection plans are designed to help you cover your mortgage payments if you experience unexpected life events. Common options for buy-to-let landlords include:
- Income protection – Provides a monthly income if you’re unable to work due to illness or accident.
- Critical illness cover – Pays out a lump sum if diagnosed with a specified serious illness.
- Life insurance – Covers your mortgage balance in the event of death, ensuring your investment is secure for your beneficiaries.
Learn About Income Protection Insurance Learn About Life Insurance
A buy to let remortgage can help improve returns and support long-term property plans. It is important to understand both the advantages and the potential risks before deciding. Lower monthly payments Switching to a more competitive rate may reduce your monthly outgoings, particularly if your current deal is ending or on a higher rate. Improved long-term savings Even small monthly savings can add up over time, reducing the total interest paid across the mortgage term. Option to overpay and reduce the term If your new deal allows overpayments, you may choose to maintain your current payment level and reduce the overall mortgage term. Access to equity for further investment Remortgaging can allow you to release equity to fund additional property purchases or improvements. More suitable mortgage terms You may be able to move to a product that better fits your current strategy, including fixed rates or interest-only options. Early repayment charges Leaving your current deal early may result in fees, which need to be weighed against any potential savings. Interest rate changes Rates may be higher than your existing deal, particularly in a rising rate environment, which could affect profitability. Rental income requirements Lenders will assess whether the property generates enough rental income to support the mortgage under their criteria. Fees and overall costs Remortgaging can involve arrangement fees, valuation costs, and legal fees. These should be considered alongside the rate. Impact on long-term borrowing Releasing equity or extending your mortgage term may increase the total amount repaid over time.Benefits and Considerations of a Buy to Let Remortgage
Potential Benefits
Key Considerations
How Can The Mortgage Broker Help You?
When you work with The Mortgage Broker, you’re partnering with a team that specialises in buy-to-let remortgages. We go beyond standard advice by focusing on the details that matter to landlords, helping you make informed decisions that support your long-term property strategy.
Whether you own a single rental or manage a growing portfolio, our advice is tailored to your circumstances, your income structure, and your future plans.
We support you by:
- Comparing product transfer vs remortgage options to ensure switching lenders is genuinely the right move
- Analysing early repayment charges (ERCs) to determine the most cost-effective time to act
- Assessing rental stress testing and affordability based on current lender criteria
- Navigating lender requirements for first-time landlords, portfolio landlords, and limited company structures
- Planning equity release or restructuring, whether you’re looking to reinvest or improve cash flow
- Reviewing your current mortgage alongside your long-term investment goals
Our role is to simplify complex criteria, identify suitable lenders, and structure your remortgage in a way that works both now and in the future.
You’ll also benefit from a transparent fee structure, with no upfront advice costs, you only pay once your mortgage offer is secured.
A Specialist Buy-to-Let Remortgage Broker You Can Rely On
- FCA regulated mortgage advice
- CeMAP qualified advisors with landlord-focused expertise
- In-depth guidance on how lenders assess salary, dividends, and retained profits
- Support with packaging your application and gathering the right documentation
- Access to over 130 buy-to-let lenders, including specialist and portfolio-focused providers
- End-to-end support from initial enquiry through to completion
- Backed by thousands of positive client reviews
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Remortgage Buy to Let FAQs
Yes, you can switch, but it’s subject to the terms of your current lender and the new lender you choose. Consider any early repayment charges if you’re in a fixed term, and assess whether it’s better to wait until the term ends. Ensure the property can provide sufficient rental income to meet the new lender’s criteria.
Remortgaging a buy-to-let can help raise capital by allowing access to the equity in a property, which can be used for improvements, debt consolidation, or investment opportunities. However, it increases debt, and repayments need careful consideration. Warning: Your home may be repossessed if you do not keep up repayments on your mortgage or any other debt secured on it.
The process usually takes between six to twelve weeks, depending on current market conditions and lender efficiency. It could take less time if interest rates become more stable.
Costs may include early repayment charges, arrangement fees, valuation fees, and legal fees. Additionally, if you add someone to the mortgage, there might be stamp duty implications.
Typically, lenders require you to have at least 25% equity in the property, although some may require 20% or even go as low as 15%.
Lenders calculate your borrowing capability based on the rental income potential, ensuring it covers mortgage payments with a buffer, usually 125% of the monthly interest-only payments.
Many lenders require you to wait six months after purchase before remortgaging to comply with money laundering regulations, though a few may allow it sooner.
Yes, without the lender’s permission, it could be considered mortgage fraud to rent out a property on a residential mortgage.
Lenders consider your credit history, property value, rental income potential, personal income, and sometimes previous landlord experience. The LTV ratio is also crucial.
‘Consent to Let’ is an arrangement with your lender allowing you to rent out your residential property temporarily without switching to a buy-to-let mortgage. It’s usually re-evaluated every two years.
Yes, you can remortgage to release equity, which can be used as a deposit for another property. Evaluate your financial goals and ensure you can handle multiple mortgages.
Your credit rating won’t directly change by remortgaging, but having a good repayment history is crucial. Hard credit checks during the application can impact your score temporarily.
While this can lower interest payments, it extends the debt over a longer term and secures it against your home, risking repossession if payments aren’t kept up.
You’ll need proof of income, ID, property valuation, existing mortgage statement, and potentially documentation proving previous landlord experience.
This involves renting out your current home while buying a new one. You typically mortgage your current home as a buy-to-let and get a residential mortgage for the new home.