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5 min read → Applications
How affordability checks work
Affordability checks go beyond your credit score — they look at whether you can actually repay. Here is exactly what lenders assess, how they verify it, and what happens when the numbers do not add up.
5 min read • Cash Train editorial team
Affordability check vs credit check — not the same thing
- A credit check looks at your borrowing history — how reliably you have repaid debt in the past
- An affordability check looks at your current finances — whether you have enough left over each month to cover repayments
- You can have an excellent credit score and still fail an affordability check if your outgoings are too high
- FCA rules (CONC) require lenders to carry out both — neither alone is sufficient
What is an affordability check?
An affordability check is a lender’s assessment of whether you can comfortably repay a loan without falling into financial difficulty. It is not optional — the FCA’s Consumer Credit sourcebook (CONC) requires all authorised lenders to carry out a reasonable affordability assessment before approving any credit agreement.
The legal basis is CONC 5.2A, which obliges lenders to consider not just the likelihood of repayment, but whether repayment would cause the borrower to experience significant adverse consequences — such as being unable to meet essential living costs, or having to borrow further to cover repayments.
In practice, this means the lender builds a picture of your disposable income: the money left after you have paid taxes, essential bills, and existing debt commitments. If that figure is reliably larger than the proposed monthly repayment, the loan is likely affordable. If it is close to, equal to, or below the repayment amount, the lender should decline.
How lenders verify your income
A lender cannot rely solely on what you state on an application form. CONC requires them to take reasonable steps to verify income. The most common methods are:
Bank statements
Typically three months of statements showing regular salary or benefit credits. The lender confirms the amount, frequency, and consistency of income.
Open banking
With your consent, your bank sends a real-time, read-only data feed direct to the lender via a secure API. Faster and harder to manipulate than a document upload.
Payslips or P60
Payslips confirm employer, pay frequency, and gross/net salary. A P60 confirms annual earnings as reported to HMRC. Self-employed applicants may use SA302 tax calculations instead.
SA302 / tax return
HM Revenue & Customs tax calculation for the most recent tax year, typically required for self-employed or director applicants whose earnings are more complex.
How lenders assess your outgoings
Income alone is not enough. The lender must also understand your committed expenditure — everything that leaves your account regularly. The following are the main categories they look at:
Rent or mortgage
Your largest fixed commitment, used to assess baseline housing cost.
Utilities
Gas, electricity, water, broadband — typically confirmed via direct debit patterns.
Existing credit repayments
Personal loans, credit cards, car finance, buy-now-pay-later balances. These all reduce your headroom.
Childcare and dependants
Declared or evidenced childcare costs and maintenance payments.
Essential living costs
Food, clothing, transport. Often estimated using standardised expenditure models (e.g. ONS data) and cross-checked against bank transactions.
Subscriptions and contracts
Mobile phone, streaming, gym — individually small but material in aggregate.
Council tax
A fixed monthly obligation visible on most bank statements.
Transport costs
Fuel, insurance, public transport — particularly relevant for applicants commuting long distances.
Where you provide declared outgoings on an application form, lenders will typically cross-reference these against the transaction data in your bank statements or open banking feed. If the declared figures appear materially lower than actual spending patterns, the lender may apply a stress adjustment or decline the application.
The role of open banking in affordability
Open banking — introduced in the UK in 2018 following a Competition and Markets Authority order and governed by the Payment Services Regulations 2017 (PSD2) — allows lenders to receive a direct, real-time data feed from your bank with your explicit consent.
For affordability specifically, open banking provides several improvements over traditional document-based methods:
Speed
Income and outgoings can be categorised automatically within seconds, rather than a manual review of uploaded PDFs that might take hours or days.
Accuracy
The data comes directly from the bank via an encrypted API — it cannot be altered in transit. This makes it more reliable than a document that could theoretically be edited.
Three months of live data
The lender sees 90 days of real transactions, not just a snapshot. This captures irregular income, seasonal spending, and any recent financial stress.
Anomaly detection
Automated software can flag patterns that might not be obvious on a summary form: payday loan repayments, gambling transactions, unarranged overdraft usage.
Your rights when a lender requests open banking
Open banking is always voluntary and consent-based. A lender cannot access your bank data without you completing a consent journey on your bank’s own website or app. You are entitled to decline open banking and provide alternative evidence of income (payslips, bank statement PDFs) instead — though the lender may take longer to process your application or may ask for more documents.
You can revoke open banking access at any time directly through your bank’s app or website. Data already processed during the affordability assessment may be retained by the lender under their privacy policy, but no new data can be retrieved after revocation. Any lender accessing your data via open banking must be registered with the FCA as an Account Information Service Provider (AISP) — check at register.fca.org.uk.
Two worked examples
Sarah, 31, Leeds — approved
Sarah applies for a £500 loan repaid over three months. She grants open banking consent. The lender’s system confirms:
- Net salary of £1,920 credited on the 25th of each month for the past three months
- Rent direct debit of £650, utilities £95, existing loan repayment £120 — total committed outgoings £865
- Estimated discretionary spending of £580 per month based on transaction history
- Residual disposable income: approximately £475 per month
- Proposed monthly repayment: £185 — well within her disposable income
Application approved. Sarah’s credit score was average, but the affordability check confirmed she had sufficient headroom.
James, 44, Birmingham — declined on affordability
James applies for £800 repaid over four months. His credit score is good — no missed payments in six years. However, the affordability check reveals a different picture:
- Net take-home pay £2,100 per month
- Mortgage £840, car finance £310, two credit card minimum payments £95, council tax £130, utilities £120 — committed outgoings £1,495
- Bank transactions show recurring gambling platform debits averaging £180 per month
- Residual disposable income after all outgoings: approximately £245 per month
- Proposed monthly repayment: £230 — leaves only £15 buffer
Application declined. The lender’s CONC obligation is to protect James from a loan that would leave him unable to absorb any unexpected cost. His good credit history is irrelevant once affordability fails.
What to do if you are turned down
A declined affordability decision is not a punishment — it is a legal safeguard. If your application is declined on affordability grounds, these are the steps worth taking:
1
Ask the lender for the reason
Under UK GDPR, you are entitled to know the main factors that led to an automated decision. Ask the lender’s customer service team to explain which element of the affordability assessment caused the decline.
2
Review your committed outgoings
Could any existing debts be consolidated or cleared before reapplying? Reducing monthly commitments directly improves your affordability ratio. Even clearing one small credit card can make a difference.
3
Check your bank transactions for patterns
Lenders using open banking will see gambling debits, regular overdraft usage, and payday loan repayments. If any of these apply, addressing them before your next application will strengthen your case.
4
Consider a smaller loan amount or longer term
A lower loan or a longer repayment schedule reduces the monthly repayment figure. This may bring it within your available headroom. Note that a longer term typically means more interest overall — use a full cost comparison.
5
Request a human review if the decision was automated
Under UK GDPR Article 22, you have the right to request that a significant automated decision is reviewed by a human. Not all lenders publicise this right proactively — you may need to ask your lender specifically.
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Common questions
FAQ
An affordability check is an assessment of whether you can comfortably meet loan repayments alongside your existing financial commitments. It looks at your income, regular outgoings and existing debts — not just your credit score — to determine whether borrowing is sustainable for you.
No. A credit check looks at your borrowing history — whether you have repaid debts on time in the past. An affordability check looks at your current financial position — whether you can afford repayments now and in the future. Cash Train carries out both as part of every application.
The initial quote-stage check uses a soft search, which is invisible to other lenders and does not affect your credit score. A hard search — which is recorded on your file — is only carried out if you proceed to a full application.
If our assessment indicates the repayments would not be affordable for you, we will decline rather than approve. This is not a personal judgement — it is designed to protect you from taking on a commitment that could cause financial difficulty. You are welcome to reapply in the future if your circumstances change.
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