Bad Code Is a High-Interest Loan: How Technical Debt Slowly Kills Team Velocity

We were moving fast. Features shipped every week. Stakeholders were happy. The backlog was finally under control. Then, almost without noticing, everything slowed down. A feature that should have taken a day took three abd a small change broke something unrelated. Fixing bugs started taking longer than building new features. And at some point, someone said: “But this used to be faster, right?” They weren’t wrong. At some point in the past, things were faster, but that speed came at a cost. A cost that wasn’t visible at the time. A cost that quietly accumulated. This is something I’ve often wanted to explain to non-technical stakeholders: we didn’t suddenly become slower, we’re just paying back what we borrowed. TL;DR Technical debt behaves like a high-interest loan: it feels cheap at first, but becomes expensive over time. The real problem isn’t having technical debt, it’s letting it compound unmanaged. Refactoring isn’t a cost, it’s an investment with measurable ROI in team velocity.