How Much Can I Borrow for a Mortgage in 2026?
One of the first questions every buyer asks is: how much can I borrow for a mortgage? It sounds like a simple question, but the answer depends on a surprisingly complex mix of income, outgoings, credit history, deposit size, and the stress tests lenders apply behind the scenes. Understanding how lenders actually calculate your borrowing potential — and how a broker can help you maximise it — could make the difference between getting the home you want and settling for less.
The Income Multiplier: Where It All Starts
Most lenders begin with a straightforward income multiplier. Traditionally, this has sat at around 4 to 4.5 times your annual income. So if you earn £50,000 a year, you might expect to borrow somewhere between £200,000 and £225,000.
Joint applications combine incomes, so a couple each earning £40,000 could, in principle, borrow £320,000 to £360,000 based on their combined £80,000 income.
However, some lenders — particularly for higher earners or certain professions — will stretch to 5 or even 5.5 times income. A number of high street lenders and specialist providers have tiered criteria where applicants earning above a threshold (often £75,000 or more) can access enhanced multipliers. The Bank of England's mortgage market guidelines require that no more than 15% of a lender's new mortgage lending exceeds 4.5 times income — but that still leaves meaningful room for lenders to accommodate the right borrowers.
It's Not Just About Income: Affordability Stress Tests Explained
Since the Mortgage Market Review of 2014, lenders have been required to go well beyond simple income multiples. They must assess whether you could still afford your mortgage if interest rates were to rise significantly — this is known as an affordability stress test.
In practice, lenders calculate your monthly repayment not at the rate you'll actually pay, but at a stressed rate — typically the product rate plus 2% to 3%, or a minimum floor rate, whichever is higher. This means your borrowing capacity is often lower than the income multiple alone would suggest.
As of 2025 and heading into 2026, with the Bank of England base rate still elevated compared to the historic lows of the early 2020s, these stress tests are biting harder than they did even three or four years ago. A lender offering a five-year fix at 4.5%, for example, might stress test you at 7% or 7.5% to satisfy its internal affordability criteria.
Importantly, the Financial Conduct Authority removed the mandatory affordability stress test rule in August 2022, meaning lenders now have more flexibility in how they structure their assessments. Some lenders have passed this flexibility on to borrowers in the form of higher maximum loan sizes. Others have maintained conservative approaches.
What Else Do Lenders Look At?
Beyond income multipliers and stress tests, lenders scrutinise a wide range of factors when deciding how much to lend:
- Monthly outgoings: Childcare costs, loan repayments, credit card balances, subscriptions, and regular financial commitments all reduce the amount you can borrow.
- Credit score and history: Missed payments, defaults, or a thin credit file can limit your options and reduce your maximum loan.
- Deposit size and loan-to-value (LTV): A larger deposit reduces the lender's risk and often unlocks better rates and higher loan amounts. Use our LTV calculator to see how your deposit affects your loan-to-value ratio.
- Employment type: Salaried employees are generally assessed straightforwardly, while the self-employed, contractors, and those with variable income face more complex assessment criteria.
- Number of dependants: Lenders account for the cost of raising children, which directly reduces assessed affordability.
- Age: Older borrowers may face restrictions on maximum mortgage terms, which affects monthly payments and therefore affordability calculations.
How Much Can You Actually Borrow? Real-World Examples
Let's look at how this plays out in practice for different borrower profiles in 2026:
- Single earner, £45,000 salary, no dependants, good credit: Based on a 4.5x multiplier, the starting point is £202,500. After affordability checks accounting for living costs and a stressed rate test, a realistic borrowing figure might be £190,000–£200,000.
- Couple earning £35,000 and £30,000, one child: Combined income of £65,000 gives a starting point of £292,500 at 4.5x. However, childcare costs and stress testing may reduce actual borrowing to around £240,000–£260,000 depending on the lender.
- High earner on £90,000: Some lenders will offer 5x or 5.5x for incomes at this level, potentially lending up to £495,000. The right lender matters enormously here.
These examples illustrate why it pays to shop around — or better still, use a broker who already knows which lenders will treat your application most favourably.
Why a Mortgage Broker Can Often Unlock More Borrowing
Going directly to your bank feels straightforward, but it limits you to one lender's criteria. Every lender has its own income multiples, its own approach to self-employed income, its own stance on contractor day rates, and its own view on bonus income or overtime. What one lender declines, another may approve — and at a higher amount.
A whole-of-market broker like My Mortgage Sorted has access to lenders across the full market, including specialist and intermediary-only lenders that you simply cannot approach directly. More importantly, an experienced broker knows the nuances:
- Which lenders use gross bonus income rather than averaging it down
- Which lenders are more generous with self-employed applicants who have only one year's accounts
- Which lenders allow higher multiples for professionals such as doctors, solicitors, or accountants
- Which lenders have lighter affordability stress tests following the FCA's 2022 rule changes
This expertise can translate directly into tens of thousands of pounds of additional borrowing capacity — or simply a better rate that saves you money every month. If you're a first-time buyer trying to understand what's available to you, our first-time buyer guide is an excellent starting point alongside a conversation with one of our advisers.
Use the Calculators to Start Your Research
Before speaking to a broker or lender, it's worth running some numbers yourself. Our tools make this easy:
- Mortgage calculator — work out estimated monthly payments based on different borrowing amounts and interest rates
- Affordability calculator — input your income and outgoings to get an indication of how much you might be able to borrow
- Stamp duty calculator — understand the tax due on your purchase so you can plan your overall budget accurately
- LTV calculator — see how different deposit sizes affect your loan-to-value ratio and the rates available to you
These figures are indicative, not guaranteed — but they give you a solid starting point and help you have a more informed conversation with an adviser.
If You're Thinking About Remortgaging or Releasing Equity
The same affordability principles apply if you're an existing homeowner looking to remortgage and borrow more. Lenders will re-assess your income and outgoings at the point of application, which means your borrowing capacity may have changed since you originally took out your mortgage — for better or worse.
If your main mortgage lender won't stretch to the amount you need, a second charge loan may allow you to borrow additional funds secured against your property without disturbing your existing deal. Our second charge calculator can give you an initial idea of what might be available.