How much can I borrow for a mortgage? It is probably the most common question anyone thinking about buying a home asks, and it is also one of the hardest to answer simply, because the honest answer is: it depends on quite a lot of things, not just your salary.
That said, there is a framework that most lenders use as a starting point, and understanding it helps you go into the process with realistic expectations.
The income multiple
The most widely used starting point in mortgage lending is the income multiple, sometimes called the loan to income ratio. The lender takes your gross annual income and multiplies it by a set figure to arrive at a maximum borrowing amount.
Most high street lenders will offer somewhere between 4 and 4.5 times your annual income as their standard maximum. Some lenders, depending on your circumstances, will extend to 5 or 5.5 times. A handful of specialist lenders will go further for the right applicant.
To put that into practical terms, here are some rough examples based on current lender ranges:
A salary of £35,000 might support borrowing of between £140,000 and £192,500 at standard multiples.
A salary of £50,000 might support borrowing of between £200,000 and £275,000.
A salary of £75,000 might support borrowing of between £300,000 and £412,500.
For a joint application, lenders use the combined household income. Two salaries of £40,000 each give a combined income of £80,000, which at standard multiples produces a borrowing range of roughly £320,000 to £360,000.
These are indicative figures, not guarantees. The actual amount you are offered will depend on a range of other factors set out below.
Why income multiples are only part of the picture
Here is where it gets more nuanced. Two people on identical salaries can receive very different mortgage offers from the same lender, depending on their outgoings, credit history and other financial commitments.
Lenders do not just look at what you earn. They look at what is left after your existing financial commitments. Monthly debt repayments on credit cards, car finance, personal loans and student loans all reduce the amount a lender is willing to advance, because they reduce the disposable income available to meet a mortgage payment. Childcare costs are also factored in by many lenders.
Credit history matters too. A clean credit record with no missed payments, no defaults and no County Court Judgements gives you access to the full range of lenders and their best products. A more complicated credit history can restrict you to lenders offering lower multiples or higher rates.
The size of your deposit also plays a role. A larger deposit means a lower loan to value ratio, which generally means access to better rates and, in some cases, higher income multiples.
What does this mean for buyers in Didcot?
The median salary in the Vale of White Horse, which covers Didcot and the surrounding area, was around £45,000 in the most recent ONS data. At a 4.5 times multiple that would support borrowing of around £202,500 for a single applicant. At 5 times it rises to £225,000. For a two-income household both earning at around the local median, the picture changes significantly.
The average sold price in Didcot is currently around £346,000. That means most buyers purchasing in the area are either buying jointly, bringing a meaningful deposit, or both. For buyers coming from London with equity in an existing property, the numbers often work more comfortably.
The new homes at Nobel Park start at around £280,000 to £300,000 for smaller properties, which is within reach for many local buyers at standard income multiples with a reasonable deposit. The surrounding villages carry a price premium, with Harwell averaging around £445,000 and Sutton Courtenay around £543,000, which typically requires either a higher combined income, a larger deposit, or access to the higher end of lender multiples.
Things that can increase how much you can borrow
Paying down existing debts before you apply removes monthly commitments from the affordability calculation and can meaningfully increase the amount a lender will offer. Even clearing a car finance agreement or a credit card balance in the months before applying can make a difference.
A joint application with a second income, even a modest one, increases total borrowing capacity.
A longer mortgage term reduces the monthly payment, which improves how the numbers look in a lender's affordability assessment. A 35-year term produces lower monthly payments than a 25-year term on the same loan, which can allow a higher loan to be approved. The trade-off is more interest paid over the life of the mortgage.
Some lenders also offer higher income multiples to specific borrower profiles, such as higher earners, certain professions, or first-time buyers through dedicated products. Which lenders are offering what changes regularly, and a broker who works across the market is best placed to know where the best options are at any given time.
A word on self-employed income
If you are self-employed, a contractor, or a company director, the income multiple framework still applies but the starting point is different. Lenders will base their calculation on your assessed income rather than a salary figure, and how they assess that income varies. Some will look at your net profit, some at salary plus dividends, some will annualise a day rate. The variations between lenders are significant enough that the mortgage available to a self-employed borrower can look very different depending on which lender is approached and how they assess income. This is one area where speaking to a broker before approaching any lenders directly tends to make a meaningful difference.
The right starting point
An online mortgage calculator gives you a rough number in 30 seconds. A conversation with a broker gives you a realistic picture of what is actually achievable for your specific situation, which lenders are most likely to offer you the amount you need, and whether there are things you can do in the short term to improve your position.
If you are buying in Didcot or anywhere in Oxfordshire and want to understand what you could realistically borrow, we are happy to have that conversation.
Frequently Asked Questions
Most high street lenders will offer between 4 and 4.5 times your gross annual income as their standard maximum. Some lenders will extend to 5 or 5.5 times for the right applicant, and a small number of specialist lenders will go further in certain circumstances. The multiple you are offered depends on your deposit size, your credit history, your outgoings and the lender's own criteria at the time you apply. Income multiples are a starting point for the calculation, not the whole picture, as lenders also run a detailed affordability assessment that takes into account your existing financial commitments.