What an affordability assessment involves
An affordability assessment is the process a lender uses to decide whether a loan is sustainable for you. It is not a judgement about your character or a simple credit score check; it is an evidence-based review of whether your income can cover your existing commitments and the new repayment without leaving you short.
Under the FCA's consumer credit rules, a lender must carry out a creditworthiness assessment before entering into a regulated credit agreement. That assessment has two parts: whether you can afford to repay, and whether the credit is suitable for your needs and circumstances. Both parts matter, and the lender must be able to show how it reached its decision.
Because the check is about your whole financial position, it looks at income, regular outgoings, existing borrowing and how you have managed credit in the past. You can read more about eligibility in our guide to loan eligibility.
The rules that govern affordability checks
The core framework comes from the Consumer Credit Act 1974 and the FCA's Consumer Credit sourcebook, known as CONC. The Act sets the statutory footing for regulated agreements, while CONC sets out the day-to-day expectations on lenders. The FCA's CONC rules require firms to assess creditworthiness in a proportionate but evidence-based way.
Before you sign, the lender must give you certain information, including the key features of the agreement and the cost of credit. For fixed-sum regulated agreements, sections 77 and 94 of the Consumer Credit Act 1974 cover statements and information you are entitled to request, and section 140A allows a court to reopen an unfair credit relationship.
If you want to check that a firm is authorised to lend, you can search the Financial Services Register before you share any personal details.
How lenders verify income
Income is the starting point of the assessment. Lenders want to see that the money coming in is stable, verifiable and likely to continue for the term of the loan. For employed applicants this usually means payslips, bank statements or payroll data. For self-employed applicants it may mean accounts, tax calculations or business bank statements.
Benefit income is sometimes accepted, but lenders treat it differently depending on the type of payment and how long it is expected to last. Irregular income such as overtime, bonuses or seasonal work is often averaged or discounted, because it cannot be relied on in the same way as a salary.
The lender is not simply checking that you earn enough. It is checking whether the surplus left after essential spending is large enough to absorb the repayment, and whether that pattern is likely to hold. Our guide to how much you can borrow explains how that surplus translates into a borrowing limit.
Outgoings and essential household spending
Once income is established, the assessment turns to outgoings. Lenders separate essential expenditure from discretionary spending. Housing, council tax, utilities, food, transport, childcare and insurance are treated as essential because they cannot easily be cut. Leisure, subscriptions and holidays are treated as discretionary.
Housing costs are central. Rent or mortgage payments are usually the largest single outgoing, so lenders will want to see them clearly on your bank statements. Where you live with others, the lender may ask how household bills are split so that your share is not overstated or understated.
Lenders also factor in the repayments on other credit, such as cards, overdrafts, catalogue accounts and existing loans. Two applicants with identical incomes can be assessed very differently if one already carries significant monthly commitments.
Your credit file and borrowing history
Your credit file provides a factual record of how you have handled credit. Lenders see accounts, balances, limits and missed payments, along with public information such as insolvency. How long each type of entry stays on file is set by the credit reference agencies and by data protection rules.
Under data protection law you can obtain your statutory credit report from each of the main credit reference agencies. The Information Commissioner's Office explains your credit rights, and our guide to checking your credit file walks through the practical steps.
Recent behaviour usually carries more weight than older history. A pattern of missed payments, or persistent use of an overdraft, can suggest that adding a new repayment would create pressure even when the loan looks affordable on paper.
Stress testing and the sustainability picture
Affordability is not only about whether you can pay today; it is about whether you can keep paying if circumstances change. Lenders therefore test the loan against a range of scenarios, including a rise in the cost of borrowing, a fall in income or an unexpected essential cost.
Some lenders use automated models that score your application against rules and historical patterns. Others, particularly for larger or longer agreements, use a manual underwriter who reviews your documents and asks follow-up questions. The table below shows the broad areas an assessment usually covers.
| Area reviewed | What the lender is looking for | Typical evidence |
|---|---|---|
| Income | Stability, source and whether it will continue | Payslips, bank statements, accounts |
| Essential outgoings | Costs that cannot easily be reduced | Bank statements, statements of affairs |
| Existing credit | Monthly commitments and balances owed | Credit file, lender records |
| Credit history | Repayment behaviour over time | Credit file, public records |
| Resilience | Ability to absorb a change in circumstances | Scenario modelling, buffer |
The outcome is a view on sustainability: whether the repayment fits with a margin left over, and whether the term of the loan matches the purpose. Lenders are expected to consider the whole picture rather than a single indicator.
What information lenders may ask for
Applications ask for details of your employment, housing, income, dependants and existing debts. Many lenders then verify those details against documents or data rather than accepting them at face value. Some use open banking, where you give permission for a regulated provider to read transaction data from your account for a defined period.
Where personal data is used, the lender must handle it in line with data protection law and tell you what it will do with it. You can withdraw open banking consent, although the lender may then be unable to complete its assessment.
Because the assessment is documented, it is worth being accurate and consistent. Discrepancies between what you state and what the evidence shows tend to slow an application down or lead to a decline. General guidance on borrowing and your rights is available from the FCA consumer hub.
If your application is declined
A decline is not a permanent judgement. It usually means the lender could not satisfy itself that the loan was affordable on the information available at the time. The same application to a different lender can produce a different result, because each firm sets its own criteria within the rules.
Before applying again, work through these steps:
- Ask the lender which credit reference agency it used, so you can check the same file.
- Review your credit report for errors and dispute anything inaccurate with the agency.
- Compare your stated income and outgoings with your bank statements to spot mismatches.
- Reduce existing commitments where you can before borrowing more.
- Test whether the repayment fits your budget with an affordability calculator before you submit an application.
- Consider a smaller amount or a longer term, and check the total cost rather than only the monthly payment.
- If money is already tight, speak to a free debt advice service such as StepChange or Money Advice Trust before taking on more credit.
Our affordability calculator and the guide to representative APR can help you see the full cost of a loan rather than just the headline rate. If you believe a lender has treated you unfairly, the Financial Ombudsman Service can review complaints about regulated firms.