
The fintech space is growing exponentially.
Case in point: The number of fintech startups around the globe have more than doubled over the past five years (from 12k to 26k).
Given the growth in the space, each fintech company increasingly needs to adopt and apply product principles that can differentiate their platforms over time.
To help you figure out the ones you should adopt, we asked 3 fast-growing fintech startupsâAcctual, Basis, and Causalâabout the principles that guide their product decisions and investments.
You can read on to see what they shared.
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Acctual, a stablecoin billing and invoicing software, needs to provide an intuitive UX so that customers can create invoices and pay bills quickly and without any issues.
As they watched how users leveraged their platform, however, they found that users were consistently running into an issue within their invoice creation workflow.Â
More specifically, the users didnât know they had to create a contact first, which led them to receive error messages when they populated the rest of the invoice fields and tried to create it. This became a frustration for customers and led many of them to leave the platform to build the invoice elsewhere.
To tackle this, their team unbundled the contact creation and invoice creation workflow. Their team also made it more explicit within the UI that adding a contact is an action that needs to happen before creating an invoice. Taken together, they've significantly reduced the number of issues users face with the workflow.

Issa HassanâsâActualâs CTO and co-founderâtakeaway from this experience is that thereâs simply no replacing the efficiency of monitoring actual customer behavior:
A core product philosophy at Basis, an AI assistant for accounting firms, is building systems instead of point solutions.Â
For example, Basis has built a unified data architecture thatâs designed to generalize context across accounting processes. This allows their AI agents to take on entirely new workflows without having to âreinvent the wheel.â
Mitchell Troyanovsky, one of Basisâ co-founders, adds more context for this example.
For Causalâa financial planning platform recently acquired by Lucanetâaccessing and using customer data is table stakes.
Customer data (from systems like CRMs, HRISs, and ERPs) can power a wide range of financial models in Causal, whether thatâs related to profit and loss statements, headcount planning, or burn rate forecasts.

However, Causal needed to be mindful of how they offered their integrations. More specifically, putting the onus on customers to export files from their systems and import them into Causal was a poor user experience.
Lukas Koebis, Causalâs CTO and co-founder, adds more context on the issues of using file-based integrations and what they did instead:
While itâs important that every fintech company adopts inspiring and forward-thinking product principles, itâs even more critical that theyâre willing to make the resource investments necessary to successfully apply them every day.
The fintechs that do the latter most effectively over time are likely to come out on top, no matter how crowded their market gets.