Lending protocol UI showing collateral and borrowed amount

DeFi lending protocol interface displaying collateral and borrowed amounts in real time.

About this subject

Decentralized lending protocols such as Aave, Compound, and MakerDAO have revolutionized access to credit by removing intermediaries. In this interface, users can view the deposited collateral value (usually in cryptocurrencies like ETH or stablecoins) and the borrowed amount, with dynamic interest rates adjusted by supply and demand algorithms. The collateral-to-loan ratio is critical to avoid liquidations: if the collateral value drops below a threshold (e.g., 150% of the loan), the position is automatically liquidated. These protocols operate 24/7 on blockchains like Ethereum, Polygon, and Avalanche, processing billions of dollars in volume. Transparency is complete: anyone can audit the smart contracts and verify balances in real time. Security, however, depends on code quality and decentralized governance, which can vote on changes to risk parameters.

Frequently Asked Questions

What is collateral in a DeFi lending protocol?

Collateral is the value in cryptocurrencies that the user deposits as security to take out a loan. It must exceed the borrowed amount to protect the protocol against default.

How do interest rates work in DeFi loans?

Interest rates are determined by algorithms based on supply and demand for the asset. High demand for loans raises rates, while excess liquidity lowers them.

What happens if the collateral does not cover the loan?

If the collateral-to-loan ratio falls below the minimum threshold, the position is liquidated: the protocol sells the collateral to recover the loan amount, and the user loses part or all of the collateral.