How do mortgage lenders calculate self-employed income?

When you’re self-employed, mortgage affordability is not just about how much money comes into your business.

Lenders need to understand what income they can evidence and use under their affordability criteria. How they calculate that income can differ depending on whether you’re a sole trader, limited company director, contractor, freelancer or partner in a business.

Under FCA affordability rules, lenders must obtain suitable evidence for each element of income they use and cannot rely on self-certification.

This can make a big difference to how much you can borrow. Two applicants may feel they earn the same amount, but a lender could assess them very differently based on their business structure, documents, income trend and overall financial position.

Why self-employed income is assessed differently

For employed applicants, lenders can usually look at payslips, a contract and bank statements to confirm income.

For self-employed applicants, income can be less straightforward. Depending on how you trade, lenders may assess sole-trader profit, salary and dividends, company net profit, contract income or project-based earnings.

That’s why lenders usually want to understand:

• How long you’ve been trading
• How your income is structured
• Whether your income is stable or changing
• Whether the income is likely to continue
• Whether your accounts and tax records support the figures

This doesn’t mean getting a mortgage when self-employed is always difficult. It just means the right lender and the right income calculation matter.

How lenders assess sole trader income

If you’re a sole trader, lenders usually focus on your net profit, not your turnover.

For example, if your business brings in £80,000 but your expenses are £35,000, your net profit is £45,000. In most cases, the lender is more likely to assess you against the £45,000 profit figure, not the full £80,000 turnover.

They may ask for evidence such as:

• SA302s or tax calculations
• Tax year overviews
• Business accounts
• Business bank statements

Your SA302 shows the income you declared to HMRC. If you’re unsure how this works, it’s worth reading more about what an SA302 is before applying.

Lenders can also differ in how they treat income across recent years. Some use an average, while others apply different rules where the latest figure is higher or lower. A higher latest year should not be assumed to mean that the full higher figure will be used.

How lenders assess limited company director income

Limited company directors are usually assessed differently because they may take income in more than one way.

Many directors pay themselves a smaller salary and then take dividends from company profits. For example, a director might take a £12,570 salary and £35,000 in dividends, giving them personal income of £47,570.

Some lenders may use salary and dividends, while others can use salary plus a share of company net profit. Your shareholding can also affect how a lender categorises and assesses the application.

For example, if you draw £47,570 in salary and dividends but the company reports stronger profits, one lender may assess the £47,570 personal income while another may be able to use company profit under its criteria.

This can make a big difference to affordability.

Shareholding thresholds can differ too. HSBC’s public mortgage document guide, for example, currently treats directors with a shareholding of 25% or more as self-employed for its evidence requirements, while directors below 25% are treated as employed.

A limited company director mortgage can be more complex, especially where company profit, multiple shareholders or a low salary-and-dividend draw are involved.

How lenders assess contractor and freelance income

Contractors and freelancers can be assessed in different ways depending on how they work.

Some contractors can be assessed using their current contract income rather than solely using historic self-employed accounts. The exact calculation and evidence required depend on the lender, how you work and how your income is structured.

A lender may look at your current contract, previous contracting history and whether there are significant gaps between roles.

Some lenders are more comfortable with contractors than others. They may look at:

• Your day rate
• The length of your current contract
• Time remaining on the contract
• Your track record in the same line of work
• Gaps between contracts
• Whether your income is likely to continue

Freelancers with project-based income are often assessed more like sole traders, particularly if they declare income through self assessment. The lender may look at your net profit, tax calculations and income consistency over time.

For both contractors and freelancers, the key issue is sustainability. A high income may still be questioned if it is irregular, newly established or difficult to evidence.

Do lenders use average income or the latest year?

Lenders do not all calculate self-employed income in the same way.

Lenders do not all treat income across recent years in the same way. Some use an average, while others apply different calculations where income has risen or fallen.

For example, if your profit was £35,000 one year and £50,000 the next, a two-year average would be £42,500. That does not mean another lender will automatically use the full £50,000 latest-year figure: the amount used depends on its criteria and how it assesses the sustainability of the increase.

If you only have one year of trading history, your options may be more limited, but not always impossible. Some lenders may consider a mortgage with one year’s accounts, depending on your background, deposit, credit profile and income evidence.

What if your self-employed income has increased?

If your income has gone up, that can help your borrowing potential, but lenders may not automatically use the higher figure.

They may want to know why the income increased. For example, did you win a new long-term contract, increase your rates, reduce expenses or land one unusually large project?

A jump from £30,000 to £55,000 may be positive, but the lender needs to decide whether the new level is likely to continue.

The lender may ask for additional evidence to understand whether the increase is sustainable. Depending on your circumstances, this could include more recent accounts, contracts, business bank statements or information from your accountant.

What if your self-employed income has decreased?

If your income has gone down, lenders may be more cautious.

For example, if your income dropped from £55,000 to £35,000, many lenders may focus on the lower recent figure. They may ask whether the business has stabilised and whether the lower income is now the more realistic figure.

A decrease does not always mean you cannot get a mortgage, but it may reduce your self-employed borrowing power. The explanation matters.

A temporary dip may be viewed differently from a longer-term decline, especially if there is evidence that income has recovered.

More broadly, FCA rules require lenders to take account of future changes to income or expenditure that they know, or should reasonably know, are likely during the mortgage term.

Why lender choice can affect how much you can borrow

This is one of the biggest differences between self-employed and employed mortgage applications.

Different lenders may interpret the same income in different ways.

One lender may use salary and dividends for a company director, while another can use company net profit. Lenders can also differ in how they treat rising or falling sole-trader income, how much trading history they require and how they assess contractor income.

That means the lender you choose can affect both whether you’re accepted and how much you can borrow.

A broker who understands self-employed mortgages can help identify lenders whose criteria are more suited to your income structure. This can be especially useful if you have salary and dividends, retained profit, contract income, fluctuating profits or only a short trading history.

How to check your self-employed mortgage affordability

A calculator can be a useful starting point if you want to understand what your income might mean for borrowing.

You can use the self-employed mortgage calculator to get a rough idea of how much you could borrow based on your income. It will not guarantee what a lender will offer, but it can help you sense-check your position before speaking to anyone or applying.

Final affordability will still depend on other factors, including:

• Your deposit
• Credit history
• Existing debts
• Number of dependants
• Monthly commitments
• Property type
• Lender criteria

Income is only one part of affordability. Under FCA affordability rules, lenders must also take account of committed expenditure and essential household costs and assess whether the mortgage remains affordable if interest rates rise.

If your income is simple and stable, a calculator may give you a helpful early estimate. If your income is more complex, such as salary and dividends, company profit or contractor income, getting self-employed mortgage advice can help you understand which lenders may be more suitable.