Borrowing Guide: FCA Affordability Rules — What Lenders Must Check Before Approving Your Loan

An affordability assessment is the process a lender must undertake before approving any regulated credit agreement. Under the FCA's Consumer Credit sourcebook (CONC), lenders are required to assess whether a borrower can make repayments "in a sustainable manner" — meaning without undue difficulty and without having to borrow further to meet the payments. This goes well beyond a simple credit score check.

The FCA distinguishes between a creditworthiness assessment (which considers the risk of the borrower defaulting) and an affordability assessment (which considers the impact of the credit on the borrower's financial situation). Both must be completed. A lender cannot rely solely on the fact that a borrower has a good credit score; they must also examine whether the specific loan fits within the borrower's actual budget.

The depth and scope of the assessment should be proportionate to the amount and duration of the credit. A small overdraft extension might require only basic checks, whereas a large personal loan or mortgage demands detailed income verification, expenditure analysis, and stress testing. The key principle is that lenders must take "reasonable steps" to verify the information — self-declaration alone is not sufficient for higher-risk products.

Under CONC rules, an affordability assessment typically covers five core areas. While the FCA does not prescribe a rigid checklist, most lenders structure their checks around income, existing debts, living costs, credit history, and anticipated future changes.

Income verification is the foundation. Lenders must take reasonable steps to verify your income, which may include requesting payslips, bank statements, tax returns, or using Open Banking data. For self-employed borrowers, this often means providing SA302 tax calculations or certified accounts. The FCA explicitly states that simply accepting a borrower's self-declared income is insufficient for significant credit commitments — a point that has led to numerous successful complaints at the Financial Ombudsman Service.

Existing credit commitments must be assessed against the borrower's income. Lenders typically use credit reference agency data to identify outstanding debts, minimum repayments, and any recent credit applications. If you have existing loans, credit card balances, or hire purchase agreements, these reduce the disposable income available for new borrowing. For those looking to understand how tax obligations affect your take-home pay, it is worth considering PAYE deductions, student loan repayments, and pension contributions as well.

Essential living costs are the third pillar. Lenders must account for housing costs, council tax, utilities, food, transport, childcare, and insurance. Some use the ONS Family Spending Survey as a benchmark; others request actual expenditure data via bank statements or Open Banking. The FCA expects lenders to use realistic — not minimum — estimates of living costs.

Credit history provides context. While a credit score alone cannot determine affordability, it reveals patterns — missed payments, defaults, county court judgments, or debt management plans — that indicate financial stress. Lenders use this alongside, not instead of, the income-and-expenditure analysis.

Future changes round out the picture. The FCA expects lenders to consider foreseeable changes that could affect affordability, such as interest rate rises (stress testing), known income reductions (for example, approaching retirement), or the end of a fixed-rate period on a mortgage. This forward-looking element is particularly important for longer-term credit.

Mortgages are subject to an even more rigorous affordability framework under the FCA's Mortgages and Home Finance: Conduct of Business sourcebook (MCOB). Following the 2014 Mortgage Market Review (MMR), all residential mortgage applications must include a detailed affordability assessment that goes significantly beyond the standard consumer credit rules.

Mortgage lenders must verify income through documentary evidence — payslips, P60s, SA302 forms, or employer references. They must assess both committed and basic essential expenditure using either the borrower's actual costs or a statistically valid model. Crucially, they must apply an interest rate stress test to ensure the borrower can still afford repayments if rates rise. Although the Bank of England ended its formal affordability test recommendation in June 2022, most lenders continue to stress test at 1-3 percentage points above the revert rate.

With the Bank of England base rate currently at 3.75%, a borrower taking a two-year fixed rate at, say, 4.2% might be stress-tested at 6.2% or higher. This narrows the maximum loan size considerably compared to the pre-2014 era, when some lenders offered self-certification mortgages requiring no income proof at all. For a deeper look at how mortgage rates affect what you can borrow, see our mortgages hub.

Being turned down for a loan or credit card can be frustrating, but the FCA framework gives you several important rights. First, if a lender declines your application based wholly or partly on credit reference agency data, they must tell you which agency they used under the Consumer Credit Act 1974. You can then obtain a free copy of your statutory credit report from that agency and challenge any errors.

Second, you have the right to ask the lender for a general explanation of why you were declined. Lenders are not required to give you the exact algorithm or scorecard they used, but they must provide enough information for you to understand the principal reasons. Common reasons include insufficient income relative to the loan amount, too many recent credit applications, adverse credit history, or inadequate employment tenure.

Third, a rejection does not mean you are blacklisted or banned from future borrowing. There is no industry-wide blacklist. Each lender applies its own criteria, and an application declined by one lender may be approved by another. However, making multiple applications in quick succession can damage your credit score because each hard search is recorded. A more effective approach is to check your credit file first, use eligibility checkers that perform a soft search, and apply only where you have a reasonable chance of approval.

If you are consistently being turned down, it is worth reviewing your overall financial position. Building an emergency savings buffer before reapplying can demonstrate financial stability, and ensuring your tax affairs are in order strengthens income verification for self-employed applicants.

Responsible lending is not just a regulatory aspiration — it is an enforceable obligation. If a lender approves credit without conducting a proper affordability assessment, or lends to someone who clearly could not afford the repayments, the borrower has grounds for a complaint. The FCA's affordability assessment guidance makes clear that firms must not lend irresponsibly, and failure to comply can result in regulatory action, consumer redress, or both.

Common examples of irresponsible lending include: approving high-cost short-term credit (such as payday loans) to borrowers already in a cycle of debt; increasing credit card limits without checking the borrower can afford the minimum payments; offering car finance deals where the repayments consume a disproportionate share of the borrower's income; and granting mortgage top-ups without re-assessing affordability.

The FCA's persistent debt rules add a further layer of protection for credit card holders. If you have been paying mostly interest and charges for 18 months, your card provider must contact you to suggest ways to repay more quickly. If you are still in persistent debt at 36 months, the provider must offer to help you repay over a reasonable period and consider reducing, waiving, or cancelling interest and charges. These rules recognise that minimum payments can trap borrowers in debt for decades.

The Breathing Space scheme offers an additional safety net. Eligible individuals can enter a Standard Breathing Space — a 60-day moratorium during which most creditors must freeze interest, charges, and enforcement action. For those experiencing a Mental Health Crisis, the protections last for 30 days plus the duration of their crisis treatment. During this period, you can work with a debt adviser to find a sustainable solution.

If you believe a lender approved you for credit you could not afford, the complaints process is straightforward and free. Start by writing to the lender's complaints department, setting out why you think the lending was irresponsible. Include specific details: what your income was at the time, what other debts you had, and why the repayments were unsustainable. The lender has eight weeks to respond with a final decision.

If the lender rejects your complaint, fails to respond within eight weeks, or offers a resolution you consider inadequate, you can escalate to the Financial Ombudsman Service (FOS). FOS is an independent, free dispute resolution service that can make binding decisions on complaints up to £430,000. It regularly upholds irresponsible lending complaints, particularly against high-cost credit providers.

When FOS finds in a borrower's favour, the typical remedy is to refund all interest and charges paid on the irresponsibly lent credit, plus 8% simple interest on those amounts. The lender must also remove any adverse credit file entries relating to the unaffordable borrowing. In some cases, FOS also awards compensation for distress and inconvenience.

It is important to act promptly. You generally have six years from the date of the lending (or three years from when you became aware of the problem) to bring a complaint to FOS. Free debt advice services such as StepChange, Citizens Advice, and the National Debtline can help you prepare your complaint and assess whether you have a strong case.

Whether you are applying for a personal loan, a credit card, or a mortgage, preparation can significantly improve your chances of approval. The single most important step is to get a clear picture of your own finances before the lender does. Check your credit reports from all three UK agencies — Experian, Equifax, and TransUnion — and correct any errors. Close unused credit accounts that might inflate your total available credit.

Gather your evidence of income. For employees, this typically means three months of payslips and your most recent P60. For the self-employed, prepare two to three years of tax calculations (SA302s) and tax year overviews from HMRC. Lenders are increasingly using Open Banking to verify income and expenditure directly from your bank account, which can speed up the process considerably.

Reduce your existing debt where possible. Paying down credit card balances and clearing small loans before applying for new credit improves both your affordability calculation and your credit utilisation ratio. If you have been building up your savings, this also demonstrates financial discipline and provides a buffer that lenders view favourably.

Finally, be realistic about what you can afford. Use an online affordability calculator to estimate the repayments and compare them against your actual monthly budget — including discretionary spending you would not want to eliminate entirely. Lenders are required to check that you can sustain repayments without undue hardship; doing the same exercise yourself before applying saves time and protects your credit file from unnecessary hard searches.

This article is for informational purposes only and does not constitute regulated financial advice. If you are struggling with debt or have been refused credit unfairly, contact a free debt advice service such as StepChange, Citizens Advice, or the Money Advice Service.