Why Does Mortgage Affordability Feel Tougher Now?

If you’ve recently started to explore getting a mortgage, you may have found that borrowing isn’t always as straightforward as you expected.

Perhaps you’ve used an online affordability calculator, only to receive a different figure when you spoke to a lender. Or maybe you’ve discovered that one lender is prepared to lend significantly more than another.

Even if mortgage rates haven’t changed much, affordability assessments are continually evolving. Understanding how lenders assess applications can help explain why borrowing limits differ, and why there’s often more flexibility than many people realise.

Mortgage affordability is about more than the interest rate

While interest rates play an important role in determining your monthly repayments, they’re only one part of the affordability assessment.

Lenders also want to understand whether a mortgage is likely to remain affordable throughout the life of the loan, taking into account your income, expenditure and wider financial commitments.

In reality, this means two applicants with the same salary could receive very different borrowing amounts depending on their individual circumstances.

What is lender stress testing?

One of the key parts of a mortgage application is known as stress testing.

Rather than assessing whether you can afford your mortgage at today’s interest rate alone, lenders may also consider whether you could continue making repayments if rates were to increase in the future.

While the way lenders carry out these assessments has evolved over recent years, many still apply their own affordability models to ensure borrowers are not overstretching themselves.

This approach is designed to support responsible lending and help reduce the risk of financial difficulties should circumstances change.

Cost of living matters too

Your income is only one side of the equation.

Lenders will also consider your regular outgoings, including everyday household spending and existing financial commitments.

Depending on the lender, this may include factors such as:

• Credit commitments and loans
• Childcare costs
• Travel expenses
• Household bills
• Insurance premiums
• Other regular financial commitments

Some lenders use statistical models based on household size and income, while others place greater emphasis on actual expenditure shown on your bank statements.

As a result, affordability assessments can vary from one lender to another.

Disposable income plays a bigger role than many people expect

Once income and expenditure have been assessed, lenders calculate your disposable income – the money remaining after your regular commitments have been taken into account.

This helps determine how comfortably you may be able to afford your proposed mortgage repayments.

Even relatively small differences in how lenders assess expenditure or apply affordability calculations can have a noticeable impact on the amount they’re prepared to lend.

Why one lender might lend more than another

One of the biggest surprises for borrowers is that there isn’t a single affordability formula used across the mortgage market.

Each lender has its own lending policy, appetite for risk and affordability model.

For example, lenders may differ in how they assess:

• Overtime, bonuses or commission
• Self-employed income
• Pension contributions
• Existing financial commitments
• Student loans
• Childcare costs
• Future household expenditure

As a result, it’s not unusual for one lender to offer significantly more borrowing than another. In some cases, the difference could be tens of thousands of pounds.

That doesn’t necessarily mean the higher figure is the right option. Instead, it highlights the importance of finding a lender whose criteria best match your individual circumstances.

Finding the right fit

Affordability isn’t simply about borrowing the maximum available.

For many buyers, the goal is finding a mortgage that supports both their property ambitions and their wider financial wellbeing.

Choosing a borrowing level that feels comfortable may provide greater flexibility for future plans, whether that’s starting a family, changing careers or simply having more room in the monthly budget.

Feeling confused?

Mortgage affordability can sometimes feel confusing, particularly when different lenders provide different answers.

However, these differences are a reflection of the fact that every lender assesses applications in its own way. Factors such as stress testing, cost-of-living assessments and disposable income calculations all contribute to the final borrowing decision.

If one lender isn’t able to offer the borrowing amount you expected, it doesn’t necessarily mean homeownership is out of reach. Exploring the wider market may reveal lenders whose affordability criteria are better suited to your circumstances, helping you make an informed decision with confidence.

Contact our expert mortgage advisers today and see what’s possible.