The agent has been running for eleven months. It works. Leadership is satisfied. Then a regulator asks for the authorization record, the document showing who approved this agent's deployment, what it was authorized to do, and who is accountable for its behavior.
The compliance team asks IT. IT asks the team that built it. The team that built it was reorganized seven months ago. The agent is still running. Nobody owns it in writing. Nobody defined its authorized scope before it went live. Nobody named the human responsible if it produces a harmful output.
The debt accumulated with every week nobody asked those questions. It became visible the day someone external did.
Governance Debt is the accumulated accountability design work an organization has deferred while deploying AI systems at speed. It accumulates the moment a deployment goes live without a documented authorization record, a named accountable owner, a defined scope, and a compliance review completed before deployment.
Each deployment without these four elements is a unit of Governance Debt. The debt grows with every subsequent deployment that skips the same steps. Organizations accumulate it faster than they recognize it because the cost of accumulation is invisible until an external event makes it visible.
The external events are predictable: a regulatory examination, a security incident, a litigation discovery request, a board question that nobody can answer from existing documentation.
