The 4 biggest problems with homemade billing systems

Drawing on experience building billing systems at Qonto, Vincent Pochet argues that developing a custom billing platform can become increasingly costly and complex as a company grows. He identifies frequent pricing changes, including annual plans, usage-based fees, regional variations, taxes, and enterprise contracts, as a major source of engineering work, alongside the operational challenge of processing large event volumes, calculating charges accurately, and generating invoices at scale. The article also highlights grandfathering, where legacy customers must retain old pricing rules while new plans are introduced, creating parallel systems that are difficult to maintain. Over time, billing can expand from a short project assigned to one engineer into a dedicated cross-functional team, while later migration to third-party software may be difficult because of accumulated custom logic and high switching costs.

No tracked trend matches for this post yet.

Use this post, company, and trend context to find content marketing opportunities, perform competitive analysis, or address product feature gaps via the Plushcap MCP server or the Plushcap API.