When should you remortgage?
Choosing when to remortgage is a key financial decision for homeowners. Timing, lender policies, and interest rate changes determine whether remortgaging will save money or incur extra costs. Understanding the process helps you make informed choices, avoid early repayment charges, and maximise your property investment.
Why remortgage a Buy-to-Let property?
Landlords remortgage Buy-to-Let properties to secure better interest rates, release equity, end a fixed-term deal, improve cash flow or yield, or change the mortgage structure.
Get a better interest rate
Switching from a standard variable rate (SVR) to a fixed or tracker mortgage can significantly reduce monthly payments for landlords. Fixed-rate mortgages offer predictable costs, making budgeting and planning easier, especially if interest rates are likely to rise.
Tracker mortgages follow the market rate and may provide lower initial payments if the base rate falls, though they also carry the risk of increases. For instance, a landlord paying £1,200 per month on an SVR could reduce this to £1,000 with a two-year fixed deal, freeing £200 each month for reinvestment or to cover void periods. It is important to compare available deals, including early repayment charges and arrangement fees, to ensure the chosen option genuinely lowers costs if that’s your priority.
Release equity
Remortgaging can unlock equity in your property, enabling you to:
- Buy a new property
- Fund renovations
- Expand your property portfolio
End of fixed term
The end of a fixed-rate mortgage is a key time for landlords to review their options. When the fixed term ends, the mortgage typically moves to the lender’s standard variable rate (SVR), which is often higher and can increase monthly payments. Reviewing your deal three to six months before expiry allows you to secure a new fixed or tracker rate and avoid sudden cost increases.
This period is also an opportunity to consider remortgaging to release equity, adjust the mortgage term, or switch between repayment and interest-only arrangements. These decisions can affect cash flow and long-term investment strategy. Planning ahead helps maintain payment continuity and protects against unexpected financial pressure.
Increase cash flow
Lowering mortgage costs or switching to interest-only payments can improve cash flow and yield, freeing up funds for reinvestment.
Change mortgage structure
Landlords can switch between interest-only and repayment options based on their goals and financial situation to optimise cash flow and long-term costs.
When is the best time to remortgage?
The best time to remortgage is typically three to six months before your current deal ends. Consider the following factors:
- Early repayment charges (ERC) that could reduce potential savings
- Current and forecasted interest rates
- Market trends that might affect future property values
You can remortgage earlier if needed, but it may not always be financially beneficial.
The Smart City Mortgages experts are happy to tell you more
How does a Buy-to-Let remortgage work?
A Buy-to-Let remortgage replaces your current mortgage with a new one. Depending on your goals, you may:
- Switch to a better interest rate
- Increase the loan amount to release equity
- Change the mortgage term or type (interest-only → repayment)
Lenders assess your application based on current property value, rental income, and loan-to-value ratio.
Who is a Buy-to-Let remortgage suitable for?
Your current deal is nearing completion
Market rates are lower than your existing rate
Property value has increased
You want to invest further or access additional capital
Buy to Let remortgage vs product transfer
What are the lending criteria for Buy-to-Let remortgages?
| Rental income requirements. | Lenders usually require 125–145% of rental income to cover mortgage payments. |
| Loan-to-Value (LTV). | Lenders typically allow up to 75% loan-to-value, depending on your profile. |
| Personal income. | You may need additional personal income to meet affordability requirements. |
| Credit history. | A strong credit history is important for approval. |
| Property type & tenants. | Some property types or tenant profiles may be considered higher risk. |
How much can you borrow?
How much you can borrow depends on rental income, loan-to-value, and personal income. For example, a property with £1,500 monthly rent and a 75% LTV may allow borrowing up to £200,000.
How much equity do you need?
Most lenders require at least 25% equity. For example, if your property is valued at £200,000 and your loan is £150,000, you have 25% equity.
How do lenders assess rental income
Lenders use rental valuations and stress-test rental income at 5 to 6% to ensure affordability. Coverage usually ranges from 125 to 145%, depending on the lender and your income tax status. They also consider void periods and maintenance risks.
What documents do you need?
- ID
- Proof of address
- Bank statements
- Payslips / SA302 for self-employed
- Current mortgage statement
- Proof of rental income
- Property details
Step-by-step Buy to Let remortgage process
To apply successfully, landlords must prepare documents for a buy to let remortgage. Key documents include:
Review current mortgage
Check rate, term, and early repayment charges.
Check property value and equity
Confirm current valuation and assess possible equity release.
Compare deals / broker
Compare lender offers or use a mortgage broker to do this for you.
Submit application
Submit all required documentation for underwriting.
Property valuation
The lender arranges a survey to confirm the property value.
Mortgage offer
Receive the formal mortgage offer and review the terms.
Completion
Coordinate completion date, funds transfer, and start of new mortgage.
What are the costs of a Buy to Let remortgage?
Costs include arrangement fees, valuations, legal fees, exit fees, and early repayment charges. Consider the total cost, not just the interest rate.
Advantages
- Lower payments
- Access to equity
- Portfolio growth
- Greater flexibility
Disadvantages
- Fees and higher rates
- Void periods
- Potential reduced income
- Complex approval process
How long does a Buy to Let remortgage take?
The process of being approved on a Buy to Let remortgage typically takes several weeks, though the exact timing depends on multiple factors. Valuation of the property, completeness of required documents, and lender processing speed all play a role in determining the timeline. In some cases, delays occur if additional information is requested or if one stage, such as property valuation, is slower than expected. Working with a mortgage broker can help coordinate the process efficiently and reduce the overall waiting time.
Can you remortgage from residential to Buy-to-Let
Yes, it is possible to remortgage a property from a standard residential mortgage to a Buy to Let mortgage if you plan to rent out the property. An alternative is seeking consent to let, which is a temporary approval from your existing lender to rent the property, but this is often less suitable for long-term rentals.
A full Buy to Let mortgage offers better flexibility for managing rental income and potential tax considerations over time.
Can you remortgage with bad credit?
Remortgaging with a poor credit history is possible, but it presents challenges. Interest rates tend to be higher, and fewer lenders may consider the application. Lenders will carefully review your credit report, rental income coverage, and affordability to determine eligibility.
Ensuring that your credit record is as clean as possible and preparing all necessary documentation can improve your chances of approval.
Is a Buy to Let remortgage a good idea?
Whether a Buy to Let remortgage is a good decision depends on your individual financial circumstances. Consider current market interest rates, available equity, and your long-term investment goals.
Remortgaging can support portfolio growth, reduce monthly payments, and release funds for further investment. However, fees, early repayment charges, and the complexity of the process may offset some benefits, so careful evaluation is essential before proceeding.
Should you use a mortgage broker?
Using a mortgage broker can be highly beneficial, especially for complex Buy-to-Let remortgages. Brokers have access to a wider range of lenders, help with paperwork, and can identify the most suitable deals for your circumstances. They can also guide you through timing, document preparation, and any special requirements, reducing stress and improving the likelihood of approval.
Considering remortgaging? Ask an expert for advice on what to do next.
Common reasons Buy to Let remortgage applications get declined
Applications are sometimes rejected due to factors such as:
- Insufficient rental income to cover mortgage payments
- High Loan-to-Value (LTV) ratios
- Poor credit history
- Unsuitable property type
- Unstable or inconsistent income
Understanding these reasons in advance can help you address potential issues before submitting an application.
Frequently asked questions about Buy to Let remortgages
Yes, if the lender approves and rental income sufficiently covers the mortgage, you may release equity to fund renovations, additional property purchases, or other investments.
Typically, a equity of at least 25% is required depending on the lenders criteria.
Yes, Buy to Let mortgages usually have higher interest rates at comparable loan to values, because lenders consider them riskier than standard residential loans.
Most lenders require rental income to cover 125–145% of the mortgage payments, depending on tax status and lender requirements.
Yes, remortgaging implies switching to a new lender, which can offer better rates and terms than the offerings from your current lender, although it may involve additional costs and paperwork.
Void periods reduce rental coverage, so personal income may need to cover mortgage payments during gaps in tenancy.
Early remortgaging may incur charges, including ERCs. It is important to check your lender’s terms and calculate whether early switching is financially beneficial.
