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DeFi lending guide

DeFi lending lets you supply crypto to earn a variable rate or borrow against collateral without a bank. Start with Aave or Morpho. Use Inverse FiRM when you need a fixed rate, Resupply when your collateral already sits in Curve or Frax markets, and skip leverage until a plain supply is boring.

Written by the Decentralized Finance editorial team, reviewed by Kaiser Khan, Editor in Chief — protocol research and lending markets.

FAQ

DeFi lending — FAQ

What is DeFi lending?

DeFi lending is supplying crypto to a smart-contract pool to earn interest, or borrowing assets by posting collateral — all without a bank. Rates are set by supply and demand on protocols like Aave and Compound.

How do I judge whether a DeFi lending protocol is safe?

No lending protocol is 'safe' — weigh audit history, time in market, oracle design, collateral types, and governance concentration instead. Aave V3 and Compound V3 are the most battle-tested by these measures; newer designs like Morpho add curator-specific risk on top. Educational research, not financial advice.

What is the difference between Aave and Compound?

Aave supports multi-asset pools, eMode, and many chains. Compound V3 uses simpler Comet markets with one borrow asset per market. Inverse FiRM offers fixed-rate DOLA borrowing. Resupply mints reUSD against Curve and Frax lending positions. See our Aave vs Compound and Aave vs Resupply comparisons for a full breakdown.

Is Resupply the same as Curve LlamaLend V2?

No. LlamaLend V2 is Curve’s isolated lending product (first Ethereum markets: Inverse sDOLA and Frax sfrxUSD). Resupply is a separate CDP that takes Curve Lend and Fraxlend positions as collateral. Convex votes gauges for both surfaces. Educational research, not financial advice.

What happened with Morpho PT-reUSD in August 2026?

On 25 August 2026 a ~3% PT-reUSD oracle print liquidated about $36 million of looped Morpho debt in 14 minutes. Not a hack; lenders were reported whole. Skip PT looping if you cannot name the oracle and LLTV. See the incident log and the PT collateral how-not-to.