Logo
Global

Trusted by HNW and UHNW Clients Worldwide

What is a Complex Mortgage?

A complex mortgage is financing designed for borrowers with non-standard financial situations or unique requirements. This might include irregular income, multiple income sources, foreign assets, or purchasing unique property types. These cases often require customised solutions and expert negotiation with lenders.

At Enness, we specialise in securing high-value and complex mortgages, working closely with private banks and specialist lenders. Our expertise has enabled us to arrange multi-million-pound mortgages with loan-to-value (LTV) ratios of up to 85%—and sometimes higher in exceptional cases. With strong relationships across the financial sector, we ensure our clients get the best terms, even for the most challenging scenarios.

Talk to a Broker Today!

What is a Complex Mortgage?

500+

A large network of trusted lenders.

6

Global market locations.

15+

Years of experience.

Our Complex Mortgage Experts

High-net-worth individuals often face challenges securing finance due to unique income structures, international earnings, or complex assets. Enness specialises in arranging custom mortgage solutions where traditional lenders fall short. Contact our experts to discuss your requirements.

SPEAK TO A MORTGAGE SPECIALIST

Islay Robinson

GROUP CEO

Toby Johncox

GROUP MD

Complex Mortgage FAQs

What is Complex Income?

Complex income refers to earnings that do not follow a traditional structure, making it more challenging for lenders to assess when applying for a mortgage. This can include variable income streams such as bonuses, dividends, freelance earnings, investment returns, or income from multiple business ventures. For high-net-worth individuals, complex income often reflects diverse and sophisticated financial arrangements. While traditional lenders may find it difficult to evaluate this type of income, specialist mortgage providers can offer solutions suited to these unique financial circumstances.

How Can We Help Self-Employed Individuals Secure Property Finance?

At Enness, a large proportion of our clients are self-employed. Our knowledge in this market is incomparable and experience in handling such cases is unrivalled.

Many of our brokers have accountancy backgrounds, making them extremely proficient in securing your property finance.

At Enness, no problem is too big when it comes to mortgages. Whether your mortgage application is complex or simple, we are fully committed to finding the best deal for our clients, whatever their circumstances. 

Can Assets or Investments be used instead of Income to Qualify for a Mortgage?

Yes, in some cases mortgages can be structured using assets or investment portfolios rather than relying solely on traditional employment income. This approach is particularly relevant for high-net-worth individuals whose wealth may be held across property, investments, business interests, or international structures rather than paid as a regular salary.

Specialist lenders may assess overall net worth, liquidity, investment income, or pledged assets when considering affordability. In certain scenarios, financing can also be structured against portfolio-backed lending facilities or wider wealth management relationships, depending on the jurisdiction and lender appetite.

Working with a broker experienced in complex income and wealth structuring helps identify lenders that take a holistic view of financial strength, ensuring the mortgage solution reflects your broader financial position rather than standard income multiples alone.

Complex Income Mortgages

Complex income mortgages are designed for borrowers whose earnings fall outside standard salaried structures. This includes individuals with multiple income streams, variable earnings, or non-traditional compensation, where conventional lenders may struggle to assess affordability.

Typical scenarios include:

  • Self-employed individuals or business owners with fluctuating income
  • Income derived from dividends or retained profits
  • Bonus-heavy remuneration or carried interest
  • Earnings across multiple jurisdictions or currencies

Rather than relying on fixed salary multiples, complex income mortgages are underwritten using a broader assessment of the borrower’s financial position. This can include reviewing company accounts, investment income, asset holdings, and forward-looking earnings.

For high-net-worth clients, this approach allows lenders to structure facilities that reflect the true strength of their balance sheet, rather than applying rigid criteria that may not capture the full picture.

Enness arranges complex income mortgages through a network of specialist lenders and private banks, structuring finance for clients with non-standard income profiles across both domestic and international transactions.

Who Needs a Complex Mortgage?

Complex mortgages are typically required by borrowers whose financial profiles fall outside standard lending criteria. This often includes individuals with multiple income streams, international assets, or ownership structures that require a more tailored approach to underwriting.

Common scenarios include:

  • Entrepreneurs and business owners
    Income derived from multiple businesses, retained profits, or irregular cash flow can be difficult for traditional lenders to assess.
  • Borrowers with foreign or multi-currency income
    Earnings from overseas sources or across jurisdictions often require specialist lenders familiar with cross-border income assessment.
  • Individuals with multiple entities or complex ownership structures
    This includes shareholdings across companies, trusts, or partnerships where income is not straightforward.
  • High-net-worth borrowers with diverse income streams
    A combination of dividends, bonuses, investments, or carried interest may require a more holistic approach to affordability.

Rather than applying rigid income multiples, complex mortgage lending focuses on the borrower’s overall financial position, allowing for greater flexibility in how income and assets are assessed.

What Makes a Mortgage "Complex"?

A mortgage is typically considered complex when a borrower’s financial profile, ownership structure, or the property itself falls outside standard lending criteria. In these cases, traditional lenders may struggle to assess risk using conventional methods, requiring a more tailored underwriting approach.

Common factors that contribute to complex mortgage cases include:

  • Income structure: Irregular or non-salaried income, such as dividends, bonuses, carried interest, or earnings from multiple businesses, can make affordability more difficult to assess using standard models.
  • Ownership structures: Borrowers with shareholdings across multiple companies, trusts, or partnerships may require lenders to take a more detailed view of how income is generated and distributed.
  • Property type: Unusual, high-value, or non-standard properties, including multi-unit assets, mixed-use developments, or properties in international jurisdictions- can fall outside typical lending appetite.
  • Credit profile: Past credit events, thin credit histories, or complex financial arrangements may require a more flexible approach from specialist lenders.

Complex Buy-to-Let Mortgages

Complex buy-to-let mortgages are designed for investors with portfolios, non-standard ownership structures, or income profiles that fall outside typical lending criteria. These cases often require a more detailed assessment of both the borrower and the underlying assets.

Common scenarios include:

  • Portfolio landlords
    Borrowers with multiple properties, where lenders assess overall portfolio performance rather than a single asset.
  • SPV and corporate structures
    Properties held through limited companies or special purpose vehicles often require specialist underwriting.
  • Layered or non-traditional income
    Rental income combined with dividends, business income, or overseas earnings.
  • Higher-value or multi-unit properties
    Including HMOs, mixed-use assets, or properties with more complex tenancy arrangements.

In these cases, lending is typically structured based on both the strength of the rental income and the borrower’s wider financial position, rather than relying solely on standard affordability models.

Enness arranges complex buy-to-let mortgages through a network of specialist lenders, structuring facilities for portfolio acquisitions, refinancing, and expansion across the UK and international markets.

Mortgages for Complex Ownership Structures

Mortgages for complex ownership structures are designed for borrowers whose income and assets are held across multiple entities, rather than through straightforward personal income. These cases often require a detailed understanding of how value flows through companies, partnerships, or trusts.

Common scenarios include:

  • Shareholdings across multiple companies
    Where income is derived from dividends, retained profits, or distributions across several entities.
  • Group or holding company structures
    Borrowers with layered corporate ownership, where assets and income sit at different levels within a group.
  • Trust and partnership arrangements
    Including family trusts, LLPs, or joint ownership structures where income is not directly received as salary.
  • Special purpose vehicles (SPVs)
    Often used for property ownership, particularly in buy-to-let or investment structures.

In these situations, lenders typically require a more detailed assessment of company accounts, ownership structures, and the relationship between entities. Affordability is assessed holistically, rather than relying on standard income multiples.

Enness arranges mortgages for complex ownership structures by working with specialist lenders and private banks, structuring finance to reflect the full scope of a client’s assets, income, and corporate arrangements.

Complex Mortgage Rates and Loan-to-Value

Rates and loan-to-value ratios for complex mortgages vary depending on how a borrower’s income, assets, and overall financial profile are structured. Unlike standard mortgages, pricing is not based on a single income multiple, but on a broader assessment of risk and complexity.

As a general guide:

  • Rates: Complex mortgage rates typically range from approximately 4.5% to 7.5%+ per annum, depending on the borrower’s profile, loan size, and the level of structuring required.
  • Loan-to-Value (LTV): Borrowing levels can reach up to 70-85% LTV in some cases, with higher leverage usually available for stronger overall financial positions and lower-risk scenarios.
  • Key influencing factors: Terms will vary based on:
    • Income structure (e.g. self-employed, dividends, carried interest)
    • Asset base and liquidity
    • Property type and location
    • Jurisdiction and currency exposure
    • Complexity of ownership structures

For more complex cases, specialist lenders and private banks take a flexible approach, structuring terms to reflect the full financial picture rather than relying solely on standard affordability models.

Enness works with a global network of lenders to source competitive rates and structure complex mortgages that align with each client’s financial profile and objectives.

Why Traditional Lenders Decline Complex Cases

Traditional lenders rely on standardised underwriting models designed for straightforward income and ownership structures. When a borrower’s financial profile falls outside these parameters, applications can be declined, even where overall wealth and affordability are strong.

Common reasons include:

  • Rigid income assessment models
    High street lenders typically prioritise fixed, salaried income. Earnings from dividends, bonuses, or multiple businesses can be discounted or excluded entirely.
  • Limited visibility of complex structures
    Where income flows through multiple entities, trusts, or international arrangements, lenders may struggle to assess how value is generated and sustained.
  • Automated underwriting systems
    Many lenders use automated criteria that are not designed to accommodate nuanced financial profiles or non-standard scenarios.
  • Restrictions on property or jurisdiction
    Unusual, high-value, or international properties may fall outside standard lending appetite.
  • Perceived complexity rather than actual risk
    In many cases, applications are declined not due to lack of affordability but because the structure requires a more detailed, manual assessment.

For borrowers with complex financial profiles, this often means that standard routes are not suitable. Specialist lenders and private banks take a more flexible approach, assessing each case on its individual merits rather than applying rigid criteria.

How to Get a Complex Mortgage

Securing a complex mortgage typically requires a more structured approach than a standard application. Rather than relying on automated affordability checks, the process involves presenting a clear and comprehensive view of your income, assets, and overall financial position.

In most cases, borrowers work with a specialist mortgage broker or advisor to access lenders experienced in complex underwriting. These lenders assess applications on a case-by-case basis, allowing for greater flexibility where income or ownership structures are non-standard.

The process generally involves:

  • Initial assessment of your financial profile
    Reviewing income streams, business interests, assets, and any complexities that may affect lender appetite.
  • Structuring the application
    Presenting income — whether from dividends, bonuses, multiple entities, or international sources — in a way that aligns with lender requirements.
  • Identifying suitable lenders
    Accessing specialist lenders or private banks with experience in complex mortgage cases.
  • Managing underwriting and approval
    Supporting the application through a more detailed underwriting process, which may involve additional documentation or clarification.
  • Securing terms and completion
    Finalising a structure that reflects both the borrower’s financial position and the lender’s criteria.

Working with an experienced complex mortgage broker ensures the application is positioned correctly from the outset, improving both the likelihood of approval and the terms achieved.

Enness arranges complex mortgages through a global network of specialist lenders and private banks, structuring each transaction to reflect the full scope of a client’s financial profile.

Why Use a Complex Mortgage Broker

Why Use a Complex Mortgage Broker

Complex mortgage cases often require a level of structuring and lender access that goes beyond standard high street criteria. Working with a specialist broker allows borrowers to present their financial position in a way that reflects the full scope of their income, assets, and ownership structures.

Key advantages include:

  • Access to specialist lenders and private banks
    Complex cases are typically handled outside mainstream lending, requiring relationships with institutions experienced in non-standard underwriting.
  • Tailored structuring of income and assets
    Brokers can align how income is presented — whether from dividends, multiple entities, or international sources — to meet lender requirements.
  • Greater flexibility in underwriting
    Rather than relying on automated criteria, specialist lenders assess the borrower holistically, allowing for more nuanced decision-making.
  • Support through complex transactions
    From initial structuring through to completion, a broker ensures the process is managed efficiently, particularly where multiple jurisdictions or assets are involved.

For high-net-worth borrowers, this approach enables access to financing that would not typically be available through standard channels.

Enness works with a global network of lenders and private banks to structure complex mortgages, ensuring each case is positioned appropriately to achieve the most favourable terms.

Schedule A Callback

Mortgage Calculator

* These figures are for guidance only.

To receive a personalised lending strategy, arrange a confidential consultation with one of our senior mortgage brokers.

Assess Your Borrowing Potential

Our private mortgage calculator provides an indicative view of repayments for complex and high-value property financing.

Enter your details to explore your borrowing potential before speaking confidentially with a specialist broker.

  • Lending solutions from international private banks
  • Guidance for complex income and global assets
  • Private consultation with an experienced mortgage broker
SPEAK TO A BROKER

Talk to our Finance Experts for options