Aipedia: Mortgage brokers

AI sourcing and lender criteria search

Aipedia, by the Apex broking team · Last reviewed 2026-10-27

A broker stays responsible for the lender and product it recommends, even when an AI sourcing or criteria tool made the match. Criteria change constantly, so a tool that is out of date can turn a routine case into a declined application and a lost rate.

Part of: AI in Mortgage brokers

In short

Sourcing systems and AI criteria search tools match borrowers to lenders by income type, credit history, property and loan size. They are fast, but they can rely on criteria that have changed, misread a borrower's circumstances or rank products in ways the adviser does not understand. If a case is declined or the borrower ends up on a worse deal, the complaint is against the broker. The MCOB suitability rules, the Consumer Duty and COCON 2.1.2R all apply, and SYSC 8.1.6R means the firm remains responsible for outsourced tools. PI usually responds to negligent sourcing, subject to the excess and wording.

How brokers use AI for sourcing

Traditional sourcing systems filter products by rate, fees and loan to value. Newer tools add natural language criteria search, where the adviser describes the borrower and the tool suggests lenders likely to accept them, and AI ranking that predicts which lender will approve the case fastest. Some brokers feed the whole fact-find into the tool and work from its shortlist. FS25/6 anticipates this, describing intermediaries giving "a final recommendation from an AI-generated shortlist" (para 4.27).

The duties that apply

Suitability: the MCOB advised sales rules require the recommended mortgage to be suitable for the borrower. A tool's shortlist is a starting point, not the recommendation.
Consumer Duty: PRIN 2A.2.8R requires firms to avoid causing foreseeable harm. A known weakness in a criteria tool that is not checked is foreseeable. The Duty's price and value outcome also matters if the tool steers borrowers to a product that is poor value for them.
Skill, care and diligence: COCON 2.1.2R applies to the adviser using the tool.
Outsourcing: SYSC 8.1.6R keeps the firm fully responsible when a third party provides the sourcing or AI function.

The FCA's 2026 good practice review puts it plainly: "Firms can outsource AI services, but remain responsible for them."

What can go wrong

Illustrative scenario: a borrower with a recent change of job asks for a remortgage. The AI criteria search suggests a lender that, according to the tool, accepts applicants on probation. The lender changed that criterion some weeks earlier, and the tool has not caught up. The application is declined after a valuation fee is paid, and by the time the broker places the case elsewhere the borrower's existing deal has ended and they spend months on a higher reversion rate. The borrower complains that the broker should have checked.

Other failure modes include a tool that ignores a criterion the adviser did not enter, such as a short lease or an unusual construction type, a ranking that favours speed of approval over total cost, and a shortlist that omits a cheaper lender because it is not on the panel the tool searches. Each can turn into a claim for the difference in cost or for wasted fees.

How PI usually responds

A claim that the broker negligently recommended an unsuitable lender or product is a standard PI risk, and a policy meeting MIPRU 3.2.4R must cover Ombudsman awards and legal defence costs. A claim is usually assessed on whether the advice fell below a reasonable standard, not on which tool produced the shortlist, subject to the policy terms.

Lost-rate and wasted-fee claims are often modest. Under MIPRU 3.2.11R the excess for a firm not holding client money can be up to the higher of £2,500 or 1.5% of income, so many sourcing complaints may be paid by the firm itself rather than the insurer. Repeated small claims from the same tool fault could also raise aggregation questions under the wording. See PI insurance for mortgage advisers.

Practical controls

Check key criteria against the lender's current published criteria before submission, especially for anything unusual.
Record which tool and version produced the shortlist, and why the adviser chose the final product.
Know the tool's panel and data refresh frequency, and tell borrowers where the search does not cover the whole market.
Review declined cases monthly for patterns that point to a tool fault.
Include sourcing tools in your outsourcing due diligence and contracts.
Apply the same discipline to affordability tools and complex income analysis, which feed the criteria search.

How Apex helps

Apex arranges PI for mortgage brokers. A broker can review how your excess and aggregation terms would treat a run of sourcing complaints. More guides are on the mortgage broker AI hub, and the FCA rules page explains the wider position.

Sources

Frequently asked

Is it negligent to rely on a sourcing tool?

Not in itself. Brokers have relied on sourcing systems for years. The question is whether a reasonable adviser would have checked something the tool got wrong, such as a criterion that looked unusual or a borrower circumstance the tool could not capture.

Who pays if a lender declines because criteria were out of date?

The borrower may complain to the broker, and the broker may have a contractual claim against the tool provider depending on the contract. Under SYSC 8.1.6R the broker remains responsible to the client for outsourced functions, so the complaint usually lands with the broker first.

Will PI pay for a lost rate?

If the loss flows from negligent advice, PI may respond, subject to the policy terms. Many lost-rate claims are small and may fall within the excess, so the firm often bears them directly. An Ombudsman award is within the cover MIPRU requires.

Check your PI covers how you use AI

Tell us about your firm and the work you do. A broker will review how your current PI treats AI-assisted work, or arrange new cover. No fee for a quote. Or call 0117 325 0027.

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Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority. Registered in England and Wales, company number 07014570. This page is general information about how AI is used in the profession and how insurance may respond. It is not legal, regulatory or insurance advice on your circumstances, and it does not guarantee that cover will be available or on what terms.