Kinked Interest Rate Curve
A kinked interest rate curve is a specific type of interest rate model where the interest rate increases linearly until a target utilization point is reached, and then rises at a much steeper rate beyond that point. The "kink" represents the optimal utilization level intended by the protocol designers.
This structure is designed to keep borrowing costs low during normal market conditions while rapidly increasing them to discourage borrowing when liquidity becomes scarce. It serves as a natural mechanism to preserve liquidity for those who need to withdraw their funds.
By penalizing high utilization, the model forces the market to find a new equilibrium. It is a widely used design in major decentralized money markets.
The model provides clarity and predictability for participants. It is a core feature of efficient capital management.
It is a clever use of incentives to manage pool health.