Decentralized Finance (DeFi) has recently experienced explosive growth in both activity and public interest. A major driver behind this surge is "liquidity mining"—a mechanism designed to bootstrap liquidity. Broadly speaking, liquidity mining involves DeFi users interacting with a protocol and receiving its native tokens as rewards.
One notable example is the liquidity mining program launched by Compound. Users who borrow or lend on the Compound protocol are rewarded with COMP tokens. This approach increases returns for lenders while subsidizing borrowers. Following its introduction, lending and borrowing activity on Compound surged dramatically.
In reality, liquidity mining is not an entirely new concept. As early as late 2018, several centralized exchanges in China experimented with similar incentive models. The most famous among them was FCoin.
FCoin offered substantial rewards to users who traded on its platform, hoping that the resulting liquidity would attract organic users. The exchange bet that users would stay even after the incentives ended—but that didn't happen.
Due to critical design flaws, FCoin’s liquidity program eventually failed. Traders could calculate whether the subsidies from mining rewards outweighed their transaction costs. When subsidies exceeded fees, arbitrage became profitable. As a result, FCoin’s trading volume once soared to $5.6 billion daily, making it appear as one of the world’s most liquid exchanges.
Nevertheless, most market observers recognized that this volume was artificial. Traders were simply mining and immediately selling FC tokens.
A similar phenomenon is occurring today. For instance, after Compound introduced liquidity mining incentives, users borrowing DAI could earn a net profit of around 3%. That’s right—some borrowers were effectively paid to take out loans.
While high-level metrics may suggest that Compound’s program is successful, its long-term viability remains uncertain. Initially, the incentives were reasonably designed. However, after COMP’s price increased tenfold, the fixed reward parameters led to annualized returns as high as 50%. This encouraged short-term speculation: the top ten liquidity miners acquired over 70% of distributed COMP and regularly sold their tokens.
Interestingly, the hype around liquidity mining can crowd out real users. As arbitrageurs flood the protocol, original interest rates become distorted. For example, when miners rushed to borrow BAT, real users who previously borrowed at 5% saw rates spike to 33% (excluding COMP rewards).
Once the "hot money" loses incentive to mine COMP, a significant portion of assets may flow out of Compound toward more profitable opportunities. This could happen if COMP rewards diminish, arbitrage opportunities dry up, or newer protocols emerge. That said, alternative opportunities might carry higher smart contract risks or capital constraints—factors liquidity miners must consider.
Moreover, the emergence of DeFi yield balancers (such as dForce’s dTokens, Staked’s RAY, or iearn.finance) could accelerate capital flight by dynamically reallocating funds to the highest-yielding protocols. Therefore, DeFi projects considering liquidity mining must carefully design their incentives to retain capital after short-term miners exit.
In this article, we explore the design space of liquidity mining and propose a framework to help DeFi teams create programs that encourage long-term capital retention.
Objectives of Liquidity Mining
The most critical step in designing a liquidity mining program is defining its precise goals. Common objectives include:
- Incentivizing long-term, sticky liquidity.
- Attracting capital to create momentum and raise product awareness.
- Distributing tokens without an ICO and decentralizing protocol governance.
Most DeFi teams aim to incentivize long-term liquidity. By offering users ownership stakes, they hope to foster loyalty. However, users vary in motivation, and filtering long-term participants from short-term arbitrageurs is essential. Currently, little evidence suggests that most users care about governance—while a minority might, the majority are profit-driven.
Using liquidity mining as a marketing tool to attract media attention and increase visibility can be effective. People are more likely to use a product they’ve heard about. But this approach must be carefully managed to avoid exhausting the entire incentive budget. In this sense, liquidity mining can be viewed as a time-bound marketing campaign.
For protocols aiming to decentralize governance, embedding voting rights in tokens is common. However, if governance tokens are highly concentrated, decentralization fails. Liquidity mining can be a powerful tool for distributing tokens to users—more so than targeted airdrops or other methods.
These goals can sometimes conflict. The ability to define and prioritize objectives is crucial for a team’s success.
Exploring the Design Space of Liquidity Mining
When building a liquidity mining strategy, we identify three key dimensions:
- Who receives rewards
- How much they receive
- When they receive rewards
Each dimension involves trade-offs, which we explore below.
Who Receives Rewards
The first question is: who gets rewarded? Most DeFi protocols involve three types of market participants: (1) makers (lenders or liquidity providers), (2) takers (borrowers or traders), and (3) service providers (such as liquidators, keepers, or oracle feeders). These participants provide value through liquidity and essential services.
Lending protocols like Aave and Compound often reward takers (borrowers). This increases outstanding loan value and protocol revenue. However, this design can encourage artificial borrowing/lending, distort interest rates, and crowd out organic users—as seen with Compound.
In trading protocols, incentivizing takers can boost volume and fees. But since takers may tolerate larger slippage, this can widen bid-ask spreads and harm organic takers.
Incentivizing makers (lenders or liquidity providers) is generally safer. But if rewards are too high, users may engage in wash trading or self-dealing. To prevent this, rewards should not exceed protocol fees.
Service providers are often overlooked yet critical for protocol operation. For example, insufficient liquidation resources contributed to MakerDAO’s struggles on March 12, 2020. In perpetual swap protocols like Perpetual Protocol or Futureswap, incentivizing insurance fund stakers is vital to ensure liquidity and solvency.
An under-explored innovation is rewarding users who are active on competing protocols. For instance, if Uniswap launched a liquidity mining program, it could offer multipliers to addresses that also provide liquidity on Balancer or Curve. This resembles centralized exchanges granting VIP status to traders from other platforms, or airlines offering elite status to frequent flyers of rivals—a strategy to attract high-value users.
Another consideration is whether to reward historical users—those active before the program launched. This rewards loyal users rather than profit-seeking "hot money." The downside is that it reduces the budget for attracting new liquidity.
How Much Reward They Receive
Determining the reward size involves three aspects: (1) total reward allocation, (2) distribution among participants (makers, takers, service providers), and (3) the reward calculation method.
For protocols seeking decentralized governance, distributing over 50% of tokens in a permissionless manner is ideal. Long-term, DeFi protocols should transition governance to the community, and distributing tokens broadly is the best way to achieve this.
Makers, takers, and service providers are all essential for a healthy protocol. Some protocols may benefit from incentivizing all three roles; others may focus on one or two.
Rewards for makers can be based on:
- Total liquidity provided (e.g., order size, duration, and proximity to mid-price in an order book exchange).
- The value of liquidity consumed by takers—a simple maker subsidy.
Rewards for takers can be based on:
- Trading or borrowing volume.
- Fees paid to the protocol or to makers—a simple taker subsidy.
Rewards for service providers can be based on:
- The dollar value of liquidations executed.
- The value of collateral held to backstop liquidations (e.g., funds in a insurance pool), which helps prevent events like MakerDAO’s "Black Thursday."
Most current programs distribute a fixed number of tokens over a fixed period. A more effective design might tie rewards to actual fees generated or paid by users. For example, Compound borrowers could earn rewards equal to the interest they pay to lenders or the protocol’s spread.
When They Receive Rewards
Most liquidity mining programs today have no lock-ups or time-based releases. Without lock-ups, arbitrageurs can easily calculate profitability. For instance, Compound borrowers can estimate hourly COMP rewards based on current prices. This encourages short-term mining, which may not benefit organic growth.
👉 Explore advanced reward distribution strategies
One countermeasure is to delay reward distribution. If COMP tokens were locked for 12 months, arbitrageurs would bear price risk and could become long-term stakeholders.
Lock-ups also enable clawback mechanisms. For example, a liquidity provider might need to maintain a minimum stake to keep their rewards. If they fall below the threshold, part of their rewards could be recycled into the incentive pool. This discourages worthless mining without alienating real users.
Alternatively, protocols can use a carrot-based approach: offering multipliers for long-term participation. For instance, a user who maintains liquidity for 60 days might earn extra rewards. This avoids the negative perception of penalties while achieving similar retention.
Finally, teams should consider gradually phasing out rewards rather than ending them abruptly. A sudden stop could cause liquidity to vanish overnight. A gradual reduction—e.g., decreasing subsidies from 100% to 75% year over year—eases the transition.
Frequently Asked Questions
What is liquidity mining?
Liquidity mining is a mechanism where DeFi protocols reward users with native tokens for providing liquidity, borrowing, trading, or performing other essential services. It aims to bootstrap network effects and distribute governance tokens.
How does liquidity mining differ from yield farming?
While often used interchangeably, yield farming typically involves optimizing returns across multiple protocols, whereas liquidity mining specifically refers to earning protocol-native tokens through participation.
What are the risks of liquidity mining?
Risks include smart contract vulnerabilities, impermanent loss (for liquidity providers), token price volatility, and potential capital flight once incentives diminish. Participants should assess protocols carefully.
Can liquidity mining lead to sustainable growth?
It can, if designed well. Programs that include lock-ups, historical rewards, and service-based incentives are more likely to retain long-term users than those focused solely on short-term subsidies.
How do protocols prevent artificial volume inflation?
Methods include delayed reward distribution, lock-up periods, clawbacks for reduced participation, and tying rewards to real fees generated rather than fixed token amounts.
What is the future of liquidity mining?
As DeFi matures, we expect more sophisticated designs that balance incentives for makers, takers, and service providers while aligning long-term interests between protocols and users.
Conclusion
Liquidity mining programs aim to bootstrap network effects. To retain users and foster genuine growth, teams must carefully design incentive structures and adjust variables based on their goals.
Looking at DeFi Pulse, three sectors are ripe for large-scale liquidity mining programs: automated market maker (AMM) exchanges, lending protocols, and order book exchanges.
Each protocol type can adjust variables differently, but the theme is consistent: if teams reward fixed token amounts without lock-ups and ignore historical participation, they will attract short-term arbitrageurs who crowd out organic users. For some protocols, this may be acceptable if the goal is attention and momentum.
However, most DeFi teams want long-term user retention and genuine governance participation. Subsidizing worthless trading often misallocates resources and grants network ownership to users providing little value. These teams should consider (1) locking mined tokens, (2) rewarding historical usage, (3) incentivizing service providers, and (4) pegging rewards to actual protocol fees rather than fixed token quantities.
Well-designed liquidity mining programs hold endless possibilities, and the DeFi space has only scratched the surface. We are excited to see how these schemes evolve.