Anyone looking for underwriting software soon gets lost in feature lists. Every solution claims the same thing: faster, smarter, with AI. But the useful question is not which one has the most features, it is which type of software fits the way you lend. This article sets out the types, with the situations in which each works best, and the criteria on which you compare them fairly. We deliberately name no brands, because the choice is about the type, not the vendor.

The four types

1. The retail mortgage platform. Built for large, uniform volumes of consumer mortgages. Strong at standardised assessment and high-throughput flows. A good fit if you process high numbers of comparable cases with income as the main criterion. It starts to pinch as soon as your cases deviate from the standard, for example with business or complex collateral.

2. The generic loan origination system (LOS). A broad toolkit that can do a great deal but is specific to nothing. Powerful if you have an IT team to shape it. The downside is that you have to work out how to fit your process into it yourself, which for a small team can be a burden rather than a solution.

3. The specialist platform. Built for a specific type of lending, for example buy-to-let, bridging or commercial real estate, where the collateral is central and cases are bespoke. A fit if you operate in a niche and want software that understands the complexity of your cases without forcing you into standard boxes.

4. Self-build or spreadsheets. Still the reality for many lenders. Maximum flexibility, no licence costs, but also a lot of manual work, little traceability and a process that more or less starts again with every case. It works until volumes grow or the pace has to go up.

When does each type fit?

There is no universally best choice, there is a best choice for your situation. A few rules of thumb:

  • Do you process high volumes of uniform consumer mortgages? Then a retail platform is logical.
  • Do you have a strong IT team and a need for maximum control? Then a generic LOS can fit.
  • Are you in a niche with complex, collateral-driven cases? Then a specialist platform fits best.
  • Are you still working in spreadsheets and mainly looking for grip without losing flexibility? Then the question is not which heavy system you buy, but how to keep the step to structure small.

The criteria that actually matter

Whatever the type, these are the criteria for a fair comparison. They weigh more heavily than any individual feature.

  • Configurability without an IT project. Can you adjust acceptance rules, checks and workflows yourself? Ask during a demo whether you can change a rule live. If that cannot be done without the vendor, you know enough.
  • Integration with your sources. Does it connect with the credit bureaus, KYC sources, core banking and CRM you use? And how deep does that integration go?
  • Turnaround and first-time-right. Ask for measurable figures: how long does it take from application to a decision-ready file, and what share is complete in one go?
  • Human judgement as the starting point. Does the AI support the analyst, or take the decision? The first is what you want, and soon also what regulation requires.
  • Traceability and compliance. Are decisions demonstrable, with audit trails and version control of your rules?
  • Scalability. Do you keep consistency and grip as volumes grow?

How to run the comparison in practice

A good comparison does not start with the brochure, but with your own process. First map where time disappears today and which steps are manual. Then ask each vendor to show the same things concretely in a demo: adjusting an acceptance rule, an integration with one of your sources, and the turnaround and first-time-right figures. What a system can do on paper matters less than what it lets you do without outside help.

The bottom line

Do not compare loan origination software on the longest feature list, but on the type that fits the way you lend, and on the criteria that determine your dependence and your speed. For one lender that is a retail platform, for another a specialist solution, and for those still working in spreadsheets the first gain is simply structure without losing flexibility. Choose on the basis of your own process, not on the basis of who shouts loudest.

Want to think through which type fits your underwriting process best? We are happy to help.