Peer-to-Peer (P2P) crypto lending is the practice of directly lending or borrowing cryptocurrency between parties through blockchain-based protocols or platforms without the need for a traditional bank or financial institution as intermediary. In DeFi, this has evolved into a sophisticated ecosystem of lending protocols that manage billions in loans automatically through smart contracts.
HOW CRYPTO LENDING WORKS
Lenders deposit cryptocurrency into a lending protocol's smart contract pool. Borrowers post overcollateralised crypto as collateral and draw loans in another asset. Interest accrues continuously on loans. If collateral value falls below the required collateralisation ratio, the position is liquidated automatically the collateral is sold to repay the loan.
OVERCOLLATERALISATION: THE KEY MECHANISM
Unlike traditional loans based on creditworthiness, DeFi lending is overcollateralised; you must post more value as collateral than you borrow. On Aave, you might post $10,000 in ETH to borrow $6,000 in USDC (150% collateralisation ratio). This eliminates credit risk entirely, no identity verification needed, no credit score, no bank approval. The collateral speaks for itself.
MAJOR DEFI LENDING PROTOCOLS
Aave: The leading DeFi lending protocol with dozens of supported assets across Ethereum and multiple Layer 2s.
Compound: Pioneer of algorithmic interest rates that adjust automatically based on supply and demand.
Morpho: Capital-efficient peer-to-peer matching layer on top of Aave and Compound.
Sky Protocol (MakerDAO): Specifically for minting DAI stablecoin against crypto collateral.
Liquity: Zero-interest ETH-backed loans charging a one-time borrowing fee.
INTEREST RATES IN DEFI LENDING
Rates are algorithmic determined by utilisation ratio of the pool. When most of a pool is borrowed (high utilisation), rates rise to incentivise more supply. When utilisation is low, rates fall. Stablecoin supply rates typically range from 3-15% APY; volatile asset supply rates are lower.
WHY PEOPLE BORROW AGAINST CRYPTO
Tax efficiency (borrowing avoids triggering taxable disposal events on appreciated assets), leverage (access liquidity while maintaining crypto price exposure), and yield strategies (borrow assets, deploy in higher-yielding protocols).