Ask a growing insurance business what their in-house core insurance technology costs, and they will point to their engineering payroll. Although a significant component, payroll is not the whole cost, and the costs you cannot see on any invoice are often the largest ones.
This blog breaks down the true cost of building and maintaining a core insurance platform internally.
Not to argue that internal builds are always wrong - they are not - but to ensure that the decision to continue investing in one is made with full visibility of what it costs.
What your core insurance technology is really costing you
The payroll problem
Internal core system builds have a payroll problem that is almost universal: engineering resources allocated to maintaining and extending your core insurance technology will need to scale, indefinitely.
The root cause isn’t engineering discipline. As one product becomes three, or one distribution channel becomes five, technology demands proportionally more to maintain. Systems that were built to serve a single use case must now serve multiple.
As your distribution footprint grows, so does the complexity of connecting your internal system to the outside world: external data services, distribution platforms, broker systems, capacity providers, customer-facing applications and portals.
Each new integration requires engineering time - and therefore engineers - to build and maintain.
When building technology is not your core business, the cost of what those engineers are building and maintaining is real.
The opportunity cost
The payroll number is visible, however, the opportunity cost is not. This makes it more dangerous.
Opportunity cost accumulates in the gaps:
- The market-facing feature that was deprioritised because the sprint was full of infrastructure work or maintenance.
- The distribution partnership that took six months to integrate instead of six weeks.
- The product launch that slipped a quarter.
- The competitive advantage that was taken by a faster competitor.
These costs never appear on a budget, but they do appear in market position. They appear in the conversations where a distribution partner chose someone else because they moved faster. They appear in the product gaps that your competitors have closed while your team was maintaining infrastructure.
The way to quantify opportunity cost is by asking a simple question: if your engineering team were not maintaining core insurance technology, what would they build? And how much would those things be worth to your business?
Even in a world where AI tooling has significantly lowered the bar for technical and non-technical people alike to build software, this question remains as important as it always has been.
Key-person dependency
When institutional knowledge about a core system lives in 2 or 3 senior engineers, a resignation creates a continuity crisis.
The system that has been extended and modified over several years - with undocumented logic, custom integrations, and accumulated workarounds - is not something a new engineer can take over in weeks. When key people leave, they take the system's memory with them.
When this risk materialises, the cost is not just the recruitment cost or the time to onboard someone new. It is the cost of the projects that were paused, the launches that were delayed, and the anxiety of running a business on infrastructure that only one or two people fully understand.
Stagnation
Internally built core insurance technology does not stay up-to-date with market-wide best practices. The security standards, compliance frameworks, API architecture, and integration patterns that were correct when the system was built may not meet the bar required by distribution partners, capacity providers, or regulators today.
Keeping up requires ongoing R&D investment that is rarely prioritised against feature work. The result is a system that was built for the market as it existed, not the market as it is.
Distribution partners who evaluate your insurance business’ integration capabilities will notice the gap.
Adding this all up
The full cost of investing to build core insurance technology internally is:
- engineering payroll
- maintenance overhead (every new product or channel adds to it)
- opportunity cost (every sprint of infrastructure work is a sprint not spent on differentiation)
- key-person risk (the system's vulnerability is proportional to its concentration of knowledge)
- stagnation risk (the cost of falling behind market standards)
Not all of these costs materialise for every business. But all of them must be considered in any total cost of ownership analysis.
Asking the right question
Investing to build core insurance technology internally is always expensive, and that won’t come as a surprise.
The question is whether the cost is justified by what you get in return.
As an insurance business, if your internal build is giving you genuine differentiation - proprietary underwriting capabilities, distribution integrations, or customer experiences that you could not achieve on any available platform - then the cost may be justified.
If it is not - if most of the engineering investment is going into maintenance, and the system is becoming an anchor rather than an asset - then the question is not whether to move.
The question is how quickly you can afford not to.
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