One of the most common questions self employed people ask when considering a mortgage is: how much can I actually borrow? The answer depends on several factors, including your business structure, how the lender calculates your income, your deposit size, and your other financial commitments. The good news is that self employed borrowers can access the same income multiples as employed applicants — typically 4 to 4.5 times income. The key variable is what the lender counts as your “income.” This guide breaks down exactly how borrowing capacity is calculated for different types of self employment and how to maximise yours.
For a full overview of the self employed mortgage process, see our complete guide to self employed mortgages.
How Income Multiples Work
Mortgage lenders use income multiples as a starting point for determining how much they will lend. The standard range is 4 to 4.5 times your annual income. Some lenders offer higher multiples of 5 to 5.5 times income, typically for borrowers earning above £75,000 per year, those in certain professions, or those with larger deposits.
The income multiple is applied to your assessed income — the figure the lender determines after reviewing your accounts, SA302s, or contract details. This is where the complexity lies for self employed borrowers, because different lenders assess the same person's income very differently.
In addition to the income multiple, lenders conduct a detailed affordability assessment that takes into account your monthly outgoings, existing debts, credit commitments, dependants, and living costs. Even if the income multiple suggests a certain borrowing level, the affordability assessment may reduce this if your expenditure is high.
Use our affordability calculator to get an initial estimate of how much you could borrow based on your income. For a more accurate figure, speak to a specialist broker who can assess which lenders and income calculation methods will work best for you.
How Much Can You Borrow by Business Structure?
Your business structure is the single biggest factor affecting your assessed income and therefore your borrowing capacity. Here is how each structure typically works:
Sole Traders and Freelancers
Lenders use your net profit from your SA302, usually averaged over two to three years. If your income has been rising, some lenders will use the latest year's figure. For example:
- Average net profit of £45,000 × 4.5 = potential borrowing of £202,500
- Latest year net profit of £55,000 × 4.5 = potential borrowing of £247,500
Read more in our guide to freelancer and sole trader mortgages.
Limited Company Directors
This is where the variation between lenders is most dramatic. Directors who pay themselves a low salary and modest dividends (which is tax-efficient) can be significantly disadvantaged by lenders that only use salary plus dividends. Lenders that use salary plus share of net profit capture the true earning power of the company:
- Salary £12,570 + dividends £35,000 = £47,570 × 4.5 = £214,000
- Salary £12,570 + net profit £95,000 = £107,570 × 4.5 = £484,000
Read more in our guide to limited company director mortgages.
Contractors
Contractors benefit most from specialist lenders who annualise the day rate rather than using traditional income evidence:
- Day rate £350 × 5 days × 46 weeks = £80,500 × 4.5 = £362,250
- Day rate £550 × 5 days × 46 weeks = £126,500 × 4.5 = £569,250
Read more in our guide to contractor mortgages.
Borrowing Comparison: Same Earnings, Different Assessment
To illustrate how dramatically the assessment method affects borrowing, consider a limited company director whose company generates £100,000 in net profit per year. The director pays themselves a £12,570 salary and takes £40,000 in dividends, retaining the rest in the company:
| Lender approach | Assessed income | Borrowing at 4.5x | Borrowing at 5x |
|---|---|---|---|
| Salary + dividends only | £52,570 | £236,500 | £262,850 |
| Salary + share of net profit | £112,570 | £506,500 | £562,850 |
| Day rate (if contracting at £500/day) | £115,000 | £517,500 | £575,000 |
The same self employed person could borrow anywhere from £236,500 to £575,000 depending on which lender they approach and how that lender calculates income. This is why specialist broker advice is not a luxury — it is essential.
Other Factors That Affect How Much You Can Borrow
While your assessed income and the income multiple are the primary determinants, several other factors influence your final borrowing capacity:
- 01
Deposit size (LTV)
A larger deposit reduces the lender’s risk and may give you access to better rates and higher multiples. Some lenders offer 5x income only at lower LTVs (e.g., 75% or below).
- 02
Existing credit commitments
Loan repayments, credit card minimum payments, car finance, student loans, and other regular financial commitments reduce your net disposable income and therefore your borrowing capacity.
- 03
Dependants and household costs
Lenders use standardised expenditure models that account for the number of dependants in your household. More dependants typically means lower maximum borrowing.
- 04
Credit history
A clean credit record opens up the widest range of lenders and the best rates. Adverse credit does not prevent borrowing but may limit your options to specialist lenders with potentially lower multiples.
- 05
Property type
Some property types (such as flats above commercial premises, non-standard construction, or ex-local authority) may have lending restrictions that reduce the available loan amount or limit the number of willing lenders.
- 06
Stress testing
Lenders stress-test your affordability at a higher interest rate (typically the lender’s standard variable rate + a buffer) to ensure you could still afford repayments if rates increase. This can reduce the maximum loan offered.
Tips to Maximise Your Borrowing Capacity
- Choose the right lender: This is the most impactful step. A lender whose income assessment method suits your business structure can offer significantly more than one that does not. A specialist broker will identify the best option.
- Reduce existing debts: Paying off credit cards, loans, or other commitments before applying frees up more of your income for mortgage affordability. Even paying down (not necessarily paying off) credit card balances can help.
- Save a larger deposit: A bigger deposit means a lower LTV, which may unlock higher income multiples and better rates. Moving from 90% to 85% LTV, or from 85% to 75%, can make a meaningful difference.
- File your latest tax return early: If your income has increased, having the most recent year available gives lenders the highest figure to work with. Do not wait until the January deadline if you can file sooner.
- Consider your income extraction strategy: For limited company directors, discuss with your accountant whether adjusting your salary and dividend levels (or finding a lender that uses net profit) could improve your assessed income. Always balance this against tax implications.
- Apply jointly if possible: A joint application combines both applicants' incomes, potentially doubling the borrowing capacity. If your partner has employed income, this can simplify the assessment for the employed portion.
- Review your credit report: Check for errors and ensure your electoral roll registration is up to date. Even small improvements to your credit profile can expand your lender options.
Be cautious about borrowing the maximum available. Just because a lender will offer a certain amount does not mean it is comfortable for your circumstances. Self employed income can fluctuate, so building in a buffer is prudent. A good broker will help you find the right balance between borrowing enough for your property goals and maintaining financial comfort.
Calculate Your Borrowing
Our free online tools can give you an initial estimate of your borrowing capacity. These calculators use standard income multiples and provide a useful starting point, though a specialist broker will be able to give you a more precise figure based on specific lender criteria.
- Affordability calculator — estimate how much you could borrow based on your income and outgoings
- Mortgage repayment calculator — see what your monthly payments would look like for different loan amounts and interest rates
- Loan-to-value calculator — work out your LTV based on property value and deposit
When you are ready to take the next step, our short online enquiry form takes just a few minutes and there is no hard credit search for your initial assessment.
- Self employed borrowers access the same income multiples (4–4.5x) as employed applicants — the key is what figure counts as your “income.”
- Your business structure dramatically affects your assessed income: sole traders use net profit, directors may use salary + dividends or salary + net profit, contractors can use annualised day rates.
- The same person can be assessed on vastly different incomes by different lenders — choosing the right lender is critical.
- Reducing existing debts, saving a larger deposit, and filing your tax return early are the most effective ways to maximise your borrowing.
- A specialist whole-of-market broker is the best way to ensure you get the highest borrowing from the most suitable lender for your circumstances.
Your home may be repossessed if you do not keep up repayments on your mortgage or any other debt secured on it.