Case Study: Remortgaging with Help to Buy and Unsecured Debt

Wesley Ranger • 7 April 2026
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A mid-career homeowner with a Help to Buy equity loan needed to refinance their residential mortgage while managing significant unsecured debt and limited savings. With affordability pressures and lender restrictions in play, the solution required careful structuring to secure a sustainable mortgage while protecting future financial stability.


Refinancing a property with a Help to Buy equity loan while carrying unsecured debt is a scenario that requires precise structuring and lender positioning. In this case, the client was looking to refinance their existing mortgage on a like-for-like basis, maintaining a long-term repayment structure while navigating affordability constraints and planning for future stability.


This type of scenario is increasingly common as borrowers approach the end of historically low fixed-rate periods and face a materially different interest rate environment. Many are now exploring options around remortgaging with existing debt and government-backed equity schemes, where traditional lender appetite can be more constrained.


Navigating the Constraints of Help to Buy and Affordability


The client owned a one-bedroom flat valued at approximately £300,000, with an existing mortgage of just over £158,000 on a capital repayment basis. Alongside this sat a 40% Help to Buy equity loan, materially impacting lender calculations around loan-to-value and future refinancing options.


While the headline loan-to-value on the mortgage appeared modest, the presence of the equity loan changes how lenders assess risk. Some lenders treat the combined exposure as a higher effective LTV, particularly when considering future resale or refinancing risk. Others apply more nuanced underwriting, but this varies significantly across the market.


At the same time, the client carried approximately £16,000 in unsecured credit card debt, with monthly commitments approaching £1,000. This created a clear affordability constraint.


Traditional lenders often struggle to accommodate scenarios where high levels of unsecured debt materially reduce disposable income, even where overall earnings are strong. In this case, the client’s income, comprising a solid base salary with a consistent variable bonus, was sufficient on paper, but the debt servicing obligations required careful positioning.


Specialist lenders are able to take a more holistic view of income structures, particularly where bonus income is evidenced consistently. However, even within this space, the treatment of unsecured debt remains a key underwriting consideration.


Structuring the Right Approach


Working closely with the client, Steve Verrell ( one of Willow's Specialist Property Finance team ) structured a solution that balanced stability, flexibility, and affordability.


The first decision point centred on product type.


A 2-year fixed rate provided payment certainty in a rising or uncertain rate environment, while a tracker offered lower initial costs and greater flexibility, particularly given the absence of early repayment charges.


This trade-off is critical.


The fixed rate offered predictability, particularly valuable given the client’s financial commitments and dependent, while the tracker created an opportunity to benefit if rates stabilised or reduced. However, the tracker introduced exposure to upward rate movements, which needed to be carefully considered against the client’s existing financial commitments.


The second layer of structuring involved term and repayment profile. Maintaining a 36-year term ensured monthly affordability remained manageable, particularly given the client’s ongoing debt repayments and family responsibilities. While extending term length can increase total interest paid over time, it provided necessary cash flow stability in the short to medium term.


Income assessment was another key area of lender differentiation. Some lenders would have restricted or excluded the bonus element entirely, reducing borrowing capacity. Others were willing to incorporate it where a consistent track record could be demonstrated. Positioning the client with the right lender, one that could appropriately assess both base and variable income, was central to achieving the required outcome.


Why Simpler Routes Were Not Suitable


At first glance, this might appear to be a straightforward like-for-like remortgage. However, several factors made standard high street solutions less viable.


The combination of Help to Buy, unsecured debt, and reliance on variable income creates a layered risk profile. Many lenders apply rigid affordability models that do not flex for nuanced scenarios, particularly where debt servicing ratios are elevated.


In addition, some lenders apply stricter criteria where government schemes are involved, limiting available options. Others may offer competitive rates but fail affordability due to conservative treatment of bonus income or credit commitments.


This is where structured advice becomes critical, identifying lenders whose underwriting models align with the client’s profile, rather than forcing the case into unsuitable criteria.


Integrating Protection Into the Strategy


Beyond the mortgage itself, a key component of the solution was protecting the client’s income.


With only statutory sick pay available and limited emergency reserves, the client faced a clear vulnerability. In the event of illness or injury, maintaining mortgage payments and living costs would become immediately challenging.


Income protection was structured to provide a tax-free monthly benefit aligned to the client’s income, with a deferred period designed to balance affordability and risk exposure. This ensured that, should the client be unable to work, a sustainable income stream would replace lost earnings.


This aspect is often overlooked in standard mortgage advice but becomes particularly important in cases involving financial dependants and limited financial buffers.


Outcome and Long-Term Positioning


The final structure delivered a sustainable refinancing solution that aligned with the client’s priorities.


The mortgage was secured on a capital repayment basis, ensuring full repayment over time, while maintaining a manageable monthly commitment. Product flexibility allowed the client to choose between certainty and short-term savings, depending on their risk appetite.


Crucially, the structure also preserved optionality. Features such as overpayment allowances and potential portability created flexibility for future life changes, including moving home or reducing debt more aggressively.


This type of scenario sits alongside broader considerations such as debt consolidation strategies, income protection planning, and long-term equity loan repayment planning, all of which form part of a wider financial strategy.


Key Takeaways


What made this case possible was not simply access to the market, but the ability to align lender criteria with the client’s specific profile. The presence of a Help to Buy loan, combined with unsecured debt and variable income, required careful lender selection and structured presentation of the case.


Lenders assessed the scenario differently depending on how they treated bonus income and existing credit commitments. By positioning the case with a lender capable of taking a more flexible view of income, while still managing risk appropriately, Steve Verrell managed to ensure the required borrowing was achieved.


For similar clients, the key insight is that affordability is not just about income, it is about how that income is interpreted, how existing commitments are factored in, and how the overall structure aligns with lender risk models. Specialist advice adds value by navigating these nuances, identifying viable routes where standard approaches may fall short, and ensuring the solution remains sustainable over time.









Important Notice

This article is for general information purposes only and does not constitute personal financial advice, tax advice, or legal advice. Mortgage availability, criteria, and rates depend on individual circumstances and may change at any time.

Remortgaging a property with a Help to Buy equity loan and existing unsecured debt involves additional considerations, including lender affordability assessments, treatment of government-backed equity, and the impact of credit commitments on borrowing capacity. Not all lenders will accommodate these scenarios, and criteria vary significantly across the market.

Examples, scenarios, and case studies are illustrative only and do not represent any specific lender’s current policy or a guarantee of outcome. Borrowers should carefully consider the financial implications of refinancing, particularly where debt levels are high or income includes variable elements such as bonuses.

Your home may be repossessed if you do not keep up repayments on a mortgage or any debt secured against it.

Willow Private Finance Ltd is authorised and regulated by the Financial Conduct Authority (FCA No. 588422). Registered in England and Wales.

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A portfolio landlord in later career, holding a number of HMOs valued at circa £2.5M+, required a strategic remortgage of two key assets. The challenge centred on complex ownership structures, lender constraints around lease models, and a clear intention to exit the portfolio within two years. The solution, found by Elizabeth Powell of Willow Private Finance, involved carefully structured short-term fixed facilities, balancing cost, flexibility, and lender appetite, positioning the client for an efficient and controlled disposal strategy. In this case, the client approached Elizabeth seeking to refinance two six-bedroom HMOs held within a wider five-property portfolio. Both properties were performing well, generating strong rental income from working professional tenants, and sat at approximately 66–68% loan-to-value. However, this was not a straightforward remortgage. The client’s structure involved personal ownership of the properties alongside a lease arrangement into a management company, an increasingly common model among experienced landlords seeking operational efficiency and tax flexibility. This immediately introduced underwriting complexity. This type of scenario is increasingly common, particularly where landlords operate portfolio structures through a blend of personal ownership and corporate income streams. The Structural Challenge Behind the Portfolio At first glance, the numbers were strong. Rental income exceeded lender stress thresholds, leverage was moderate, and the client had a clean credit profile. However, traditional lenders often struggle to accommodate: Lease-backed rental flows where income is paid into a limited company rather than directly to the borrower Portfolio exposure across multiple lenders Borrowers approaching later life stages with defined exit timelines In this case, one of the existing lenders had already imposed operational constraints, requiring mortgage payments to be serviced from a personal account rather than company income. This created friction within the client’s financial structure and highlighted the lack of alignment between lender expectations and real-world portfolio management. Additionally, the lease structure itself required scrutiny. Certain lenders will either: Decline entirely where lease agreements exist between personal and corporate entities Or impose strict conditions such as short lease terms (typically under 5 years) with break clauses This significantly narrowed the viable lender pool. Specialist lenders are able to take a more pragmatic view, but even within that segment, underwriting varies considerably depending on how rental income is evidenced and controlled. Aligning the Finance with a Defined Exit Strategy A critical element of this case was the client’s clearly stated intention: to exit the portfolio within approximately two years, likely through staggered property sales. This fundamentally shaped the strategy. Rather than focusing purely on rate minimisation or long-term structuring, the emphasis shifted to: Minimising early repayment charges Maintaining flexibility to sell individual assets Avoiding unnecessary restructuring costs Simplifying lender relationships where possible The idea of consolidating borrowing into a single facility was explored. On paper, this offered administrative simplicity. In practice, however, the valuation costs alone, estimated at circa £15,000, eroded any potential benefit. 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This provided: Certainty of cost during the exit window Controlled early repayment exposure Sufficient flexibility to execute property sales without long-term penalty The selected lenders demonstrated a clear understanding of HMO assets and portfolio landlords. However, even within this space, careful positioning was required. For example, one lender agreed to proceed subject to the lease being structured with: A maximum term of five years A formal break clause This allowed them to mitigate perceived risk around income control while still supporting the client’s operating model. The balance between product fee and interest rate was also carefully considered. Lower-fee options were available, but these carried higher rates, which, over a two-year period, resulted in a higher total cost. In contrast, slightly higher product fees (added to the loan) combined with competitive rates delivered a more efficient outcome. 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