Compound COMP: DeFi Lending & Borrowing Protocol

Compound is a decentralized finance protocol built around onchain lending and borrowing markets. Its core model allows users to supply supported digital assets to liquidity markets and earn market-driven yield, while borrowers can access liquidity by depositing collateral. The current Compound platform describes itself as a global market for capital, with markets designed around earning, borrowing, collateral management, and transparent risk parameters.

At the center of the broader Compound ecosystem is COMP, the protocol’s governance token. Compound’s current platform also includes institutional-focused markets alongside its established DeFi infrastructure. Users can interact with supported markets through the Compound application, while governance and ecosystem development are supported through community-oriented infrastructure. This article explores how Compound works, how lending and borrowing operate, what COMP does, and how the protocol approaches security, risk management, and institutional markets.

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What Is Compound and How Does Its DeFi Lending Model Work?

Compound is an onchain lending and borrowing protocol that allows users to supply supported crypto assets and access liquidity through smart contracts. Instead of relying on a traditional financial intermediary to match individual lenders with individual borrowers, Compound uses blockchain-based markets, collateral requirements, and algorithmic interest-rate models to manage lending activity. In Compound III, users can supply supported assets as collateral to borrow a designated base asset, while users supplying the base asset can earn interest according to the applicable market conditions.

The basic model connects three elements: supplied assets, borrowing capacity, and collateral. A user can deposit supported assets into a Compound market, while another user can access liquidity by borrowing against eligible collateral. The amount a user can borrow depends on the collateral factors assigned to the assets supplied. For example, if an asset has an 85% borrow collateral factor, its value can support borrowing up to 85% of that value in the market’s base asset, subject to the protocol’s other risk parameters.

Supplying Assets and Earning Interest

Supplying assets is one of the primary ways users interact with Compound. In Compound III, the base asset can earn interest when supplied, with the applicable supply rate determined by the protocol’s interest-rate model. Collateral assets, by contrast, are supplied primarily to support borrowing and do not themselves earn interest under the Compound III model. This distinction is important because not every asset deposited into the protocol serves the same economic function.

Interest rates are market-driven through utilization. Compound III calculates supply and borrowing rates according to how much of the available base asset is being utilized. As utilization changes, the corresponding supply and borrow rates adjust according to the configured rate model. The model also includes a utilization threshold, or kink, after which the interest-rate slope increases more rapidly. This allows lending conditions to respond to changing demand for liquidity rather than relying on one permanently fixed rate.

Borrowing Against Crypto Collateral

Borrowing allows users to access liquidity without necessarily selling their existing crypto assets. A user supplies eligible collateral and can then borrow the protocol’s base asset within the limits established by the relevant collateral factors. This creates a way to obtain liquidity while maintaining exposure to the deposited collateral, although borrowing also introduces requirements around collateral value and liquidation risk.

If the value of a borrower’s collateral falls sufficiently relative to their outstanding debt, the position can become eligible for liquidation. Compound III uses liquidation collateral factors to determine when positions can be absorbed, with the protocol taking control of eligible collateral to address the outstanding borrow.

COMP and Compound Governance

COMP is the governance token of the Compound ecosystem. COMP holders and delegates participate in governance by proposing and voting on changes to the protocol. Governance can influence protocol parameters, supported markets, and other administrative functions through Compound’s governance contracts and Timelock system.

This gives COMP a role distinct from the basic lending process. Suppliers and borrowers interact with Compound’s markets to provide or access liquidity, while COMP holders participate in the governance system that helps determine how the protocol evolves. Together, these components form Compound’s broader DeFi model: smart contracts provide the lending infrastructure, collateral supports borrowing, market utilization influences interest rates, and decentralized governance coordinates protocol changes.

Compound Lending Markets and Earning Yield

Compound’s lending markets allow users to put supported digital assets to work within an onchain liquidity system. In Compound III, users can supply assets to a market through the protocol’s supply function, which transfers the asset into the protocol and records the corresponding balance for the user. Depending on the asset and its role in a particular market, supplied tokens can serve as collateral or as the market’s base asset. The initial Compound III deployment uses USDC as its base asset, while other markets use different base assets and support various collateral assets.

How Supplied Assets Support Borrowing

When users supply assets, those assets become part of the liquidity available within the Compound market. This pooled structure means borrowers do not need to negotiate directly with an individual lender. Instead, eligible borrowers interact with the protocol and can withdraw the market’s base asset when they have sufficient collateral and satisfy the applicable borrowing requirements. Collateral factors determine how much borrowing capacity a supplied asset provides, while market parameters help manage the amount of risk associated with each supported asset.

This creates a straightforward relationship between suppliers and borrowers. Suppliers provide liquidity to the protocol, while borrowers access that liquidity against qualifying collateral. The result is an automated lending environment in which smart contracts handle balances, collateral requirements, borrowing limits, and interest calculations rather than relying on traditional loan agreements.

Market Conditions Drive Supply-Side Returns

Yield on Compound is not a fixed payment promised to suppliers. In Compound III, users with a positive balance of the market’s base asset earn interest according to the applicable supply-rate model. Supply rates are connected to utilization, meaning the relationship between supplied and borrowed liquidity affects the rate. The protocol’s interest-rate model also includes a utilization “kink,” after which rates can change more rapidly as utilization increases.

This makes Compound yield inherently variable. A market with changing borrowing demand can experience changes in utilization and, consequently, changes in the supply rate. Users should therefore view displayed APR or APY figures as market-dependent rates rather than guaranteed returns.

Withdrawals and Available Liquidity

Compound’s pooled-market design is intended to make supplied assets accessible without requiring a supplier to wait for a particular borrower’s loan to mature. The original Compound whitepaper describes this liquidity model, while the current Compound documentation provides withdrawal functions for removing eligible balances. In practice, withdrawals remain subject to the protocol’s rules and the liquidity available in the relevant market.

Compound markets can support assets such as ETH, WBTC, USDT, and USDC, although the exact role of each asset depends on the specific market and network. Current Compound market data, for example, lists these assets across active markets.

Compound connects deposited liquidity with borrowing demand through programmable markets. However, variable DeFi yields can change as market utilization changes, and they should not be treated as guaranteed income.

Compound Borrowing and Collateralized Liquidity

Compound allows users to access onchain liquidity by borrowing against supported collateral rather than selling assets they already hold. In the current Compound III model, users supply eligible assets as collateral and can then borrow the market’s designated base asset when their collateral provides sufficient borrowing capacity. This creates a lending system where access to liquidity is determined by programmable collateral and risk parameters rather than a traditional credit assessment.

Borrowing Against Supported Collateral

The basic borrowing process begins when a user supplies an eligible collateral asset to a Compound market. Each collateral asset has a defined collateral factor that determines how much borrowing power it provides. If the account has enough qualifying collateral, the user can withdraw the market’s base asset and create a borrow balance.

This structure gives users another way to access capital from their existing crypto holdings. Instead of selling ETH, WBTC, or another supported asset to obtain liquidity, a user may be able to use that asset as collateral and borrow against it. The borrowed funds can then be used elsewhere while the original collateral remains subject to Compound’s borrowing and liquidation rules.

Why Compound Uses Overcollateralized Lending

Collateral is central to Compound because the protocol does not rely on traditional unsecured credit relationships. Borrowers must maintain sufficient collateral relative to their outstanding debt. This overcollateralized structure provides a buffer against fluctuations in crypto-asset prices and helps protect the liquidity supplied by other market participants.

The amount a user can borrow depends on the specific collateral asset and its risk parameters. Rather than treating every cryptocurrency equally, Compound assigns different collateral factors and liquidation thresholds according to the configuration of each market.

Key factors can include:

• Collateral factor: Determines the borrowing capacity provided by an asset.
• Liquidation parameters: Define when collateral becomes eligible for liquidation.
• Asset support: Only assets configured for a particular market can be used according to that market’s rules.

These parameters allow Compound markets to account for differences between supported digital assets and their associated risks.

Borrowing Rates Follow Market Conditions

Borrowing on Compound does not generally involve a single fixed interest rate for every asset. Rates are determined by the individual market and respond to utilization. As borrowing demand changes relative to available liquidity, the applicable borrow rate can change as well.

Compound’s interest-rate model uses utilization and a defined kink to adjust rates. When utilization reaches higher levels, the borrowing rate can increase more rapidly, helping create an economic incentive for liquidity to remain available in the market. As a result, borrowers should expect their borrowing costs to change rather than assuming that the rate at the time of borrowing will remain constant.

Liquidation Helps Maintain Market Solvency

Because crypto collateral can fluctuate significantly in value, Compound needs a mechanism for dealing with accounts that no longer maintain sufficient collateral. Liquidation addresses this risk. When a borrower’s position falls below the required collateral conditions, eligible collateral can be liquidated to help repay outstanding debt.

Liquidation is therefore an important part of Compound’s risk-management framework. It protects the lending market by addressing undercollateralized positions before they can create larger losses for liquidity providers. For borrowers, this means collateral selection and borrowing levels matter: taking on debt against volatile assets can create a greater risk of liquidation when market prices move unfavorably.

Compound’s borrowing model combines collateral, market-based interest rates, and automated liquidation rules to provide access to crypto liquidity while maintaining safeguards around the assets supplied to its markets.

Compound Markets, Collateral, and Risk Parameters

Compound does not treat every lending market or collateral asset as having the same risk profile. Each market can be configured around a specific base asset, supported collateral, liquidity conditions, and set of risk parameters. These settings determine how much borrowing capacity an asset provides and when a position can become subject to liquidation. Compound’s market interface displays parameters such as collateral factors, liquidation factors, and liquidation penalties for individual collateral assets, allowing users to examine the rules that apply to a particular market before supplying or borrowing.

Collateral Factors and Borrowing Capacity

Collateral factors are central to determining how much liquidity a user can borrow. When an asset is supplied as collateral, its value is multiplied by the applicable collateral factor to determine the borrowing capacity associated with that asset. A lower factor creates a larger buffer between the value of collateral and the amount that can be borrowed, while a higher factor allows greater capital efficiency but leaves less room for adverse price movements.

Compound’s markets can also impose borrowing or supply limits on individual assets. These limits help prevent a single collateral type or position from creating excessive exposure within a market. As a result, users should consider more than the headline borrowing rate when evaluating a lending market. Relevant parameters include:

• Collateral factor: Determines the borrowing capacity generated by supplied collateral.
• Borrowing caps: Limit how much can be borrowed against particular assets or within defined markets.
• Liquidation factor: Establishes the point at which a collateralized position becomes eligible for liquidation.
• Liquidation penalty: Determines the additional cost associated with collateral liquidated to repay debt.

These parameters work together to establish the risk boundaries of a Compound market.

Why Curated Collateral Matters

Collateral selection is another important part of market design. A market that supports a narrowly selected group of established, liquid assets can use parameters tailored to those assets rather than applying one broad framework to a much wider range of tokens. This is particularly relevant when assets differ substantially in liquidity, volatility, market depth, and price behavior.

Compound’s recently launched Institutional Market illustrates this approach. The market is built around USDC borrowing and a curated collateral set of ETH, wstETH, WBTC, and cbBTC. Its published terms set loan-to-value ratios of 87% for ETH, 85% for wstETH, and 81% for both WBTC and cbBTC. Each collateral asset also has a $10 million borrowing cap.

Institutional Market Risk Parameters

The Institutional Market also publishes liquidation ranges that differ by collateral asset. ETH has a 93% liquidation factor and a 5% liquidation penalty, while wstETH has a 92% liquidation factor and a 7% penalty. WBTC and cbBTC have 86% liquidation factors and 10% liquidation penalties. These differences show how Compound can configure risk settings according to the collateral used rather than relying on identical terms for every asset.

The broader lesson is that Compound’s lending conditions are market-specific. A parameter that applies to one market should not automatically be assumed to apply elsewhere. Risk settings can also be updated as market conditions, liquidity, collateral characteristics, or governance decisions change.

Users should check the current collateral factor, borrowing limits, liquidation factor, liquidation penalty, available liquidity, and other published parameters for the specific Compound market they intend to use. These settings can materially affect both borrowing capacity and liquidation risk, making them an important part of evaluating any Compound position.

Compound COMP represents the governance layer of an established decentralized lending ecosystem built around onchain capital markets. Compound allows users to supply supported assets and earn market-driven yield while borrowers can access liquidity against collateral. Its current platform also includes an institutional market designed around USDC borrowing, curated collateral, transparent risk parameters, and dedicated support.

DeFi lending has always offered opportunity, but there is a catch: rates can move when you least expect them. What if you could lock borrowing costs instead? That is the idea behind TermMax TMX, a fixed-rate borrowing and lending marketplace designed to bring greater predictability to on-chain capital markets. 

Beyond lending and borrowing, Compound places significant emphasis on security, market risk assessment, governance, and ecosystem development. COMP connects token holders with the protocol’s governance process, while the broader Compound ecosystem continues to provide infrastructure for decentralized and institutional capital markets. For readers exploring DeFi lending, Compound offers a useful example of how blockchain-based markets can coordinate liquidity, collateral, borrowing, governance, and risk management through programmable financial infrastructure.