What is TVL?
TVL — Total Value Locked — is the total value of assets users have deposited into a protocol's smart contracts, usually quoted in US dollars. It is DeFi's headline metric: a rough proxy for how much capital trusts a protocol enough to sit inside it, and the default yardstick for ranking lending markets, DEXes, staking protocols, and entire chains against each other.
How it works
TVL is computed from on-chain data: sum the token balances held in a protocol's contracts — liquidity pools, lending markets, staking vaults — and multiply each by its current market price. Because prices move constantly, TVL changes even when no deposits or withdrawals happen; a market-wide rally lifts every protocol's TVL, and a crash shrinks it.
The subtlety is in what counts. DefiLlama, the standard aggregator, defines TVL as value locked in a protocol's own contracts by users and splits contested categories into toggles: native-token staking, "pool2" liquidity paired with the protocol's own governance token, and borrowed funds are tracked separately rather than bundled into the headline number. It also excludes assets a protocol issues that are locked in other protocols, to avoid counting the same dollar twice as it moves through the composability stack.
Raw TVL is also gameable, which is why analysts increasingly adjust it. Deposits chasing token emissions can vanish the day incentives end; a single whale looping one position can inflate a lending market's headline deposits, though DefiLlama excludes borrowed funds from core TVL and its founder has publicly disputed that looping meaningfully inflates its numbers. DefiLlama's listing rules also reject "unproductive or artificial" liquidity positions with no real trading activity or user engagement, and it has removed such deposits so that TVL better reflects real economic activity — and serious protocol analysis pairs TVL with revenue, user counts, and depth of liquidity rather than reading it alone.
Why it matters
TVL is the fastest way to size a protocol or chain and to spot capital rotation across the ecosystem. But it measures deposits, not profits or safety — a high TVL bought with emissions can evaporate overnight, and TVL says nothing about whether the contracts holding it are secure.
Real-world examples
DefiLlama tracks TVL across thousands of protocols and chains, with per-protocol toggles for staking, pool2, and borrowed funds. Analysts compare lending protocols like Aave and Compound by TVL, and track chain-level TVL to follow liquidity migrating between Ethereum, its layer 2s, and alternative L1s.
Related terms
Read deeper: Assessing TVL quality in DeFi · How to check a protocol's TVL and audits
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