TVL (Total Value Locked) is an estimate of the market value of the assets that a methodology includes within a protocol, network, or other DeFi scope at a given time. It is a stock measure: it is not cash flow, an audited balance-sheet item, or a safety rating.
In plain terms — TVL tries to answer “what are the assets counted here worth now?” Understanding the number requires two more questions: which assets are included, and which prices value them?
How the number is produced
A general form of the calculation, within a stated scope, is:
TVL at time t = sum of included quantities × their price at time t
If a contract holds 100 units of an asset, their contribution changes when units enter or leave, but also when the price used to convert them into the reporting currency changes. Dollar TVL can therefore rise while deposited quantities remain unchanged, or fall without users making withdrawals.
The word “locked” does not necessarily mean that assets are unavailable until a maturity date. Many protocols allow withdrawal under the contract's rules and prevailing liquidity conditions. DefiLlama, for example, defines protocol TVL as the value of coins held in its smart contracts; other datasets may use different inclusions, prices, and classifications.
Why two TVL figures may not be comparable
The scope may cover one protocol, one version, one network, or several networks. Providers may also treat staking, collateral, borrowed assets, duplicated pools, receipt tokens, and deposits routed into other protocols differently. A methodology revision can alter a historical series even when no on-chain movement occurred at the same moment.
Double counting arises when the same economic exposure reappears at several steps. A user deposits an asset and receives a token representing the claim; if that token is deposited into a second protocol, an unadjusted aggregate can count both the original asset and its representation. Bridges, liquid staking, and composed strategies therefore need explicit rules, not a simple addition of figures displayed on different pages.
TVL, activity, and risk answer different questions
TVL does not directly measure protocol use. Volume and transaction count describe activity; fees are amounts paid by users; revenue is the share of fees retained by the protocol under the dataset's methodology. Large deposits can coexist with little activity, while a service with less capital can process substantial volume.
TVL also does not establish exit liquidity, solvency, decentralization, or robustness. A faulty oracle, a depegged asset, a compromised bridge, an admin key, or a fragile liquidation mechanism can harm a position even when the aggregate is large. Those relationships are covered in DeFi protocol risk.
How to make a reproducible comparison
Before comparing two values, record the date and time, denomination, price source, and scope. Then check which contracts, networks, and asset categories are included, how receipt tokens and reused collateral are treated, and whether the provider changed its methodology.
When reading a change, separate at least three components: deposits or withdrawals, price movement, and classification changes. A TVL-to-token-market- cap ratio also compares different quantities: it is not a valuation rule and does not replace analysis of economic rights, emissions, fees, and risks.
Sources
- DefiLlama — Data Definitions — the “Total Value Locked”, “USD Inflows”, “Fees”, and “Revenue” sections define and separate stock, flow, and activity measures in the dataset.
- DefiLlama — double-counting FAQ — explains the “Doublecount” filter and how receipt tokens and liquid staking are treated in aggregates.
- ESMA — Decentralised Finance in the EU: Developments and risks — p. 6 and note 4 use TVL as a sector-size measure and state its valuation basis.
- Financial Stability Board — The Financial Stability Risks of Decentralised Finance — p. 33 highlights measurement problems caused by collateral reuse, interconnectedness, and double counting.
Links
Liquidity pool · Tokenomics · Smart contract risk · DeFi protocol risk · Decentralized finance (DeFi)