What is liquidity mining? Detailed explanation of liquidity mining and APY risks

In the summer of 2020, a governance token called COMP completely subverted the landscape of decentralized finance.

As a lending agreement on Ethereum, Compound began distributing COMP tokens to all users who borrow or lend money on its platform. In just a few weeks, hundreds of millions of dollars of money poured into smart contracts that previously held only a small amount of assets. Users not only earn interest through deposits, but also receive a second level of reward-governance tokens-on top of the basic income. They then deposited these tokens on other platforms to earn third-tier revenue. This mode of operation is called "profitable farming". During a short and fanatical period, the annualized rate of return of mainstream platforms once exceeded 1000%. These yields are unsustainable, the risks are not fully understood, and the strategies involved are indeed unprecedented innovations. Three years later, the boom subsided and unsustainable gains collapsed, but a permanent feature was left in the DeFi economy: the practice of proactively allocating capital across protocols to maximize benefits. Beneficial farming did not disappear with the end of "DeFi Summer", but gradually matured.

Summary

Revenue farming refers to the act of depositing cryptocurrency into the DeFi protocol to earn revenue such as transaction fees, loan interest, governance token rewards, or agreement incentive plans.

This strategy covers multiple types: providing liquidity on a decentralized exchange, borrowing in the money market, using an automated treasury strategy, and participating in a points plan that can be converted into future token allocations.

In DeFi, sustainable yields are typically 3-15% for stablecoin trading and 10-30% for volatility trading. Higher interest rates advertised often reflect temporary subsidies, token inflation or risks that are not reflected in the nominal interest rate.

The word "farming" comes from game culture and refers to players accumulating resources through repeated operations. In DeFi, resources are benefits, and repeated operations are investment of capital where the returns are highest. The metaphor is deeper than most people imagine: farming in the game is boring, repetitive, and rewards those who ruthlessly optimize the process. The same is true for DeFi revenue farming. Ordinary farmers deposit stablecoins in Aave and earn a 4% yield. Professional farmers spread their capital among eight agreements on four chains, reinvest it every hour through automated strategies, use option positions to hedge volatile losses, and earn 12-20% while monitoring the smart contract risk of each position. The difference between ordinary farmers and professional farmers lies not only in the rate of return, but also in the understanding of the source of income. Because benefits that seem to arise out of thin air must have their own sources, and farmers who do not know the source of benefits are often the "source of benefits" themselves.

How it works: What happens when you deposit assets

Streamlines revenue farming to its most basic form, which consists of three steps: you deposit tokens into a smart contract; you agree to use your tokens for some productive purpose; and you obtain a portion of the value generated by that purpose. Productive purposes vary according to the type of agreement, but are mainly divided into the following categories.

On decentralized exchanges such as Uniswap or Curve, the productive purpose is market-making. You deposit a pair of tokens, such as ETH and USDC, into a liquidity pool, and DEX uses your tokens to facilitate transactions between these assets. Whenever traders exchange ETH for USDC or vice versa, they pay a fee (typically 0.3% on Uniswap v2 and a variable rate on v3) that will be distributed prorated to all liquidity providers in the pool. Your return depends on the proportion of trading volume passing through the pool relative to its total size: a pool with $10 million in deposits and $1 million in daily trading volume will have a very different return than a pool with $10 million in deposits and $100,000 in daily trading volume. The gains are real and come from fees paid by real traders, but they are not without a cost: Providing liquidity exposes you to unpredictable losses, and if the ratio of the token price you deposit changes significantly, this cost may exceed the fees you earn.

In loan agreements such as Aave, Compound or Morpho, the productive purpose is credit intermediation. You deposit a token and agree to lend it to a borrower who pays interest, and you receive a portion of the interest. Borrowers must overcollate their loans (the value deposited is higher than the amount borrowed), which protects lenders from default risks at the protocol level, although smart contract risks still exist. Lending rates fluctuate with demand: When many people want to borrow USDC (usually leveraged during bull markets), interest rates rise; when borrowing demand falls, yields compress. In recent years, stablecoin lending rates have been driven almost entirely by market cycles, ranging from below 1% to above 15%.

On revenue aggregators such as Yearn Finance, Beefy, or Sommelier, the productive purpose is strategy execution. You deposit tokens into a vault, and the vault's smart contract automatically implements a farming strategy: deposit a loan agreement, provide liquidity, receive reward tokens, exchange them for underlying assets, and then redeposit them. The treasury automates the reinvestment and rebalancing operations that artisanal farmers need to complete themselves, and collects a performance fee (usually 10-20% of profits). Vaults are tools for passive farmers: they abstract the complexity of multi-protocol strategies and reduce Gas fees by batching all depositors 'operations. The costs are lack of transparency-you need to trust the vault's strategy and its smart contract code-and multiple levels of risk: vault contracts may fail, underlying agreement contracts may fail, and if market conditions change faster than vault rebalances, the strategy itself may perform poorly.

Classification: Types of profitable farming

The field of profitable farming has evolved into several different categories, each with different return characteristics and risk characteristics.

Liquidity-provided farming is the oldest and most direct form. You deposit the token pair into the DEX pool and earn transaction fees. On Concentrated Liquidity DEX such as Uniswap v3, you can specify a price range for liquidity and concentrate capital in the areas where trading activity is most active, earning more fees for every dollar invested. The cost is that when prices are outside your range, concentrated liquidity can amplify volatile losses, and proactively managing positions requires constant attention or the use of automated position managers.

Encouraging farming increases second-tier benefits. The agreement distributes its own governance tokens as subsidies to liquidity providers to attract deposits. During the "Summer of DeFi" of 2020, COMP, SUSHI and dozens of other tokens were distributed this way, generating three-digit APY and attracting billions of dollars in funding. Incentive models have evolved: modern incentive plans tend to be more targeted (rewarding specific pools or behaviors) and have time limits (attribution plans, lock-in or regressive emission rates). The basic dynamics have not changed: incentive gains are subsidized by token inflation, and the sustainability of returns depends entirely on whether the token price can remain stable as additional issuance dilutes supply.

Borrowing farming is less risky and less rewarding. Depositing stablecoins into Aave or Compound allows you to get the base interest rate on the payments made by the borrower. Some lending agreements add governance token incentives to this basis, thereby creating total returns that exceed the base interest rate. The appeal is that it is simple and non-volatile: your savings remain in the form of the asset you deposited, and your returns are denominated in the same asset. The risk is mainly smart contract risk. For non-stablecoin deposits, it also includes the price fluctuation risk of the underlying token.

Point farming will emerge as a new incentive model in 2024-2025. The agreement no longer distributes tokens directly, but rewards off-chain "points" by depositing capital or using products. Points are expected to be converted to governance tokens in a future token generation event, but until this event occurs, the conversion rate is unknown. EigenLayer's re-pledge points, Blast's ecological points, Ethena's fragment system, and Hyperliquid's point plan all adopt this model. Points farming introduces a unique risk: What you earn is ownership of a future asset whose value, circulation and allocation rules are unknown. The speculative elements are clear, and the return depends entirely on the price of the final token and your share of the total points supply.

Circular or leveraged farming amplifies the rewards and risks. Farmers deposit collateral into a loan agreement, lend out funds, deposit borrowed tokens into another agreement (or the same agreement), and then repeat the process. Each cycle earns an extra layer of income, but it also increases the farmer's liquidation exposure: if the price of any underlying asset falls, the entire chain of positions may be forced to close like a domino. Leveraged farming, which has led to some of the most high-profile crashes in DeFi history, remains a strategy reserved only for operators who know exactly what they leverage and the liquidation triggers.

The mathematics behind the numbers: APY, APR and what it means

The return of benefits from farming is usually expressed as APY or APR, but both numbers will "lie", albeit in different ways.

APR, the annualized percentage interest rate, is a simple interest rate that does not consider the re-investment effect. If a pool has a monthly deposit return of 1%, its APR is 12%. This number honestly reflects past interest rates but does not say anything about the future: APR is retrospective and an annualized measure of recent performance, while DeFi rates change daily or hourly based on capital flows and demand. A pool that shows a 50% APR when you check it may show a 5% APR a week later because new deposits of $100 million diluted earnings.

APY, the annualized percentage rate of return, includes the reinvestment effect. The same 1% monthly gain generated an APY of approximately 12.68% after reinstatement. In DeFi, the frequency of reinvesting varies: some vaults reinvesting daily, some reinvesting weekly, and for high-yield positions, the APY can vary significantly. This number is useful for comparing strategies with different recall frequencies, but it also adds a layer of abstraction that may obscure the base interest rate.

When applied to incentive farming, both indicators have a common flaw: they evaluate incentive tokens at current prices. A pool that displays 200% APY (Governance Token Rewards), assuming that governance tokens maintain their current price throughout the year. If the token price falls by 80%(which is not uncommon for newly issued DeFi tokens), the actual APY becomes 40%. Moreover, if all those farming the token sell their rewards at the same time (which is usually the case), the selling pressure itself drives down the price, creating a self-reinforcing cycle that causes the gains of publicity to self-destroy.

An honest way to assess benefits from farming is to break down the benefits into their sources and evaluate the sustainability of each. Fee benefits from trading volume are sustainable as long as trading volume continues. Interest from borrowing is sustainable as long as the demand for borrowing exists. Governance token incentives are sustainable only if the token price can withstand the additional issuance plan without collapsing. The gains based on points were completely speculative before the launch of the token. Any APY that exceeds 15-20% for stablecoin strategies, or 30-50% for volatile coin pairs strategies, should be skeptical and broken down into sources before investing money.

Impermanent losses: costs concealed by promotional rates of return

Impermanent losses are the most important concept in profitable farming and the least understood by most farmers. Whenever you provide liquidity to a constant-product automatic market maker, and the token price ratio you deposit changes relative to the time of deposit, a volatile loss occurs.

The mechanism is mathematical and inevitable. The constant product AMM maintains the invariant of x * y = k, where x and y are the number of two tokens in the pool and k is a constant. When external prices change, arbitrageurs trade with the pool to align their internal prices with market prices. This rebalancing changes the composition of your position. If you deposit 50% ETH and 50% USDC, and the price of ETH doubles, the arbitrageur will buy ETH from the pool and deposit USDC, resulting in a decrease in ETH in the pool and an increase in USDC. At this point, the value of your position is lower than the value of the original token you simply held.

The magnitude of the loss depends on price changes. A price change of 1.25 times will produce a volatile loss of approximately 0.6%. A two-fold change resulted in 5.7%. A five-fold change produces 25.5%. For concentrated liquidity positions, where funds are allocated within a narrow price range, volatile losses are amplified proportionally to the concentration factor, creating a trade-off between higher expense gains and higher risk of volatile losses.

The word "impermanence" is misleading. Such losses are "impermanent" only when the price ratio returns to its original value. In fact, prices rarely return exactly to where they started. For trend assets, losses are permanent and grow. For the stablecoin-stablecoin pair, impermanent losses are negligible because both tokens anchor the same price. For highly volatile trading pairs, erratic losses can easily exceed transaction fees earned, resulting in a net loss, even though APY appears to be positive.

The practical significance is that impermanent losses must be subtracted from the advertised rate of return to determine the actual return. A pool that shows 30% APY (transaction fee) but experiences a volatile loss of 15%, the actual yield is 15%. A pool that shows 10% APY but experiences a volatile loss of 12% is actually losing money. Tools such as APY.vision, Revert.finance, and DeBank allow farmers to track actual profits and losses, including erratic losses, and anyone who provides liquidity without tracking this number is flying blindly.

Risk hierarchy: Sort by frequency where things may go wrong

The risks of profitable farming constitute a hierarchy, and the most common risks are not those that make the headlines.

Falling token prices are the most common source of loss. If you farm with volatility tokens and the token price drops by 40%, your 15% APY doesn't matter: you lose money. This is not a risk unique to DeFi, but a market risk, and income farming amplifies it by encouraging capital to be invested in opportunities for the highest yield (and often the highest volatility).

Impermanent losses, as mentioned above, are the second most common source of loss for liquidity providers. It is predictable, measurable, and almost always underestimated.

Smart contract vulnerabilities are the most damaging risks. The DeFi protocol is code, and the code is flawed. In 2024, more than $1.7 billion was stolen from the DeFi protocol due to smart contract vulnerabilities, oracle manipulation and governance attacks. The funds you deposit are placed in smart contracts that can be exploited, and the composability of DeFi creates cascading risks: vulnerabilities in downstream protocols can affect all protocols built on them. Auditing can reduce but not eliminate this risk; some of the largest attacks target audited code.

Carpet pulling and protocol abandonment are different from vulnerabilities. In smaller, newer agreements, the development team may sweep away the agreement funds and disappear, or simply stop maintaining the code, allowing the agreement to gradually decline. Carpet pulling is less common on major, mature protocols, but remains a significant risk in the long tail of DeFi, especially on new chains where the protocol ecosystem is less mature.

Liquidation risk applies to leveraged farming strategies. If you borrow against your savings and the collateral falls in value, the agreement liquidates your position and sells your collateral to pay off the loan, often at a significant loss. During sharp market declines, chain liquidations cause forced selling, exacerbating the crash, with leveraged farmers bearing the brunt.

Regulatory risks are the slowest but potentially the most damaging risks. Centralized revenue products have been closed or reorganized under SEC enforcement. Pure DeFi revenue farming, that is, interacting directly with smart contracts that do not require permission, has not yet become a direct target, but the regulatory line between "decentralization" and "centralization" is legally blurred, and the DeFi front ends with which most users interact are operated by companies subject to jurisdiction.

Curve Wars and the Economics of Liquidity Incentives

The discussion of profitable farming would be incomplete without mentioning the Curve Wars, the chapter that reveals the deepest driving force of the profitable farming mechanism.

Curve Finance, a DEX optimized for the exchange of stablecoins and similar assets, has introduced a system where CRV token holders lock their tokens for up to four years, get a voting custody CRV, and can decide to which specific liquidity pools the agreement will target token emissions. Getting a pool of more emissions attracts more liquidity providers, which deepens liquidity, improves trade execution, attracts more trading volume, and thus incurs more fees. The right to target CRV emissions effectively became the right to attract liquidity, so agreements whose stablecoins or tokens required deep Curve liquidity began to compete for this right.

Competition takes the form of bribes: Agreements pay veCRV holders a fee to vote for their preferred pool. Convex Finance emerged as the main middleman, aggregating CRV deposits and voting rights and selling governance voting rights to the highest bidder. At the peak of the Curve War, the agreement paid a bribe of $1.50 -2.00 for every $1 of CRV emissions directed to its pool, a ratio that was reasonable because the liquidity attracted by those emissions was worth to the agreement more than the cost of the bribe.

The Curve War reveals a basic fact about the economics of profitable farming: liquidity is a commodity that flows to the highest bidder, and the return on profitable farming, in the long run, is determined by the cost the agreement is willing to pay to rent this liquidity. When the agreement pays high incentives, the yield is high. When they stop paying, yields collapse and capital moves elsewhere. Farmers who understand this dynamic--that is, they are selling a service to agreements that are willing to lease liquidity--have a much clearer view of their positions than farmers who believe that high yields are inherent in DeFi.

Revenue farming and U.S. taxes: The reality of compliance

The tax treatment of revenue farming in the United States is complex, lacks specific guidance, and places a heavy record burden on active farmers.

Every profitable farming reward is a taxable event. The IRS treats proceeds from transaction fees, loan interest, governance token distribution, or treasury profits as ordinary income calculated at its fair market value when received. If you receive 100 COMP tokens worth $50, you will have to pay income tax on the $5000, whether or not you sell the tokens. If you later sell these tokens for $80, you will be subject to tax on the $3000 capital gains. If you sell for $20, you have a $3000 capital loss that can offset other gains.

Re-investment will cause tax nightmares. A treasury that automatically reinvested will generate a taxable event during each reinvested cycle. A daily reinvested treasury generates 365 taxable events per year, each of which requires calculating the fair market value of the token at the time of reinvested. No DeFi protocol issues a 1099 form. The burden of tracking every incident falls entirely on the farmers.

There is no clear tax treatment for impermanent losses. The IRS has not yet clarified whether impermanent losses constitute realized losses or unrealized losses. Most tax advisers view volatile losses as only realized when an LP position is withdrawn, but the treatment has not yet been determined.

Token exchanges within policies are taxable. If a treasury sells governance tokens in exchange for stablecoins as part of its reinvestment strategy, each exchange is a taxable disposal. A multi-hop strategy involving three to four token exchanges, with each jump producing a taxable event.

Practical advice for U.S. income farmers: Use a cryptocurrency tax tracking platform from day one. Traceability tracking across multiple chains, multiple protocols, and multiple wallet addresses is much more difficult than real-time tracking. Budget tax compliance costs as a cost of farming because the marginal benefits of active benefit farming may be significantly reduced by the tax and accounting costs required to record these benefits.

How to get started: A practical path for beginners

If you want to explore profitable farming, a step-by-step approach can minimize risks while building your understanding.

Start with stablecin borrowing. Save USDC or USDT to Aave on the Ethereum main network or Arbitrum. Yields are moderate and depend on market conditions, but the risk profile is the simplest among DeFi: no erratic losses, single asset exposure, and Aave is one of the most audited and tried agreements in the ecosystem. This step teaches you the basics of connecting your wallet, approving transactions, making deposits, and monitoring positions.

Advance to stable coin LP positions. Provide USDC/USDT liquidity on Curve and earn transaction fees from stablecoin swaps while maintaining minimal volatile losses. Yields are usually higher than simply borrowing, and this experience teaches you how to work LP positions, how to read pool statistics, and how to claim and reinvest rewards.

Explore the revenue aggregator vault. Depositing to a Yearn or Beefy vault automates the reinvestment process and gives you access to vault strategies that may span multiple protocols. Read the treasury's policy description to understand what protocols it deposits, and check the treasury's TVL and lifetime. Only after you are satisfied with these steps should you consider liquidity provision, concentrated liquidity positions, or leveraged strategies for volatile trading pairs. With each step up the ladder of complexity, risks increase, and the most common gains and losses from farming come from farmers who jump to advanced strategies before understanding the basics.

No matter what strategy you use, please follow the following operating principles: Use a mature protocol that has been audited multiple times and has a large number of TVLs. Invest capital that you can afford to lose. Monitor your positions regularly. Use a hardware wallet for large deposits. Diversify investment across multiple protocols and chains. Track your taxes from day one. And remember the fundamental question: If you don't know where the revenue comes from, then you are the source of it.

FAQs

Will farming be profitable in 2026? Yes, but the nature of profitability has changed. The three-digit APY for the 2020 "DeFi Summer" in mainstream agreements has disappeared. The sustainable rate of return on stablecoin deposits is between 3 and 10%. Volatility trading pairs provide liquidity yields of 10-30%, but carry the risk of erratic losses. Point farming and early agreement incentives can produce higher short-term returns, but there is significant uncertainty. Professional income farmers earn competitive returns through proactive management across multiple protocols and chains, but ordinary farmers who adopt the "save and leave" approach can only earn a meager income equivalent to a savings account level on stablecoin.

What is the difference between income farming and pledge? Pledge is used to protect the security of the Proof-of-Interest blockchain network and earn verifier rewards. Income farming provides liquidity, borrowing capital or strategic deposits to the DeFi protocol and earns transaction fees, interest or incentive tokens. Risk characteristics are different: pledge risks are mainly forfeiture and lock-in periods; revenue farming risks include impermanent losses, smart contract loopholes, token price collapses and liquidation. Some activities blur the boundaries: depositing liquidity pledge tokens into DeFi lending agreements combines pledge and revenue farming in one position.

Can Bitcoin be used for revenue farming? It cannot be done directly on Bitcoin's blockchain because it does not inherently support the smart contracts required by the DeFi protocol. However, wrapped bitcoins can be deposited into the Ethereum DeFi protocol for revenue farming. Some Bitcoin Layer 2 networks and sidechains are building native DeFi capabilities, but the ecosystem is much smaller and far less tested than Ethereum. The packaging process itself introduces risks: Your BTC is held by the custodian or smart contract that issued the packaging token, and that intermediary is a single point of failure.

What is the safest profitable farming strategy? On the Ethereum main network or main Layer 2 network, deposit stablecoins into mature lending agreements that have gone through years of multiple audits. The strategy eliminates unpredictable losses, minimizes token price risk, and uses the most rigorously tested smart contracts in DeFi. The yield is moderate, but the risk-reward profile is the most conservative in decentralized finance. Even this strategy carries non-zero smart contract risk and stablecoin decoupling risk, but both are well known and rare in history on mature platforms.

How much money does it take to start profitable farming? The answer entirely depends on which blockchain you use. On the Ethereum main website, Gas fees for deposits, rewards and withdrawals can be as high as $50 -200 per transaction, making income farming with less than $5,000 - 10,000 in capital impractical. On second-tier networks, Gas costs are typically less than $1, making $500 - 1,000 farming practical. On Solana, transaction costs are less than a penny, and farming can be carried out even if the amount is smaller. The minimum is determined by Gas economics, not agreement requirements: Most agreements do not have a minimum deposit amount, but if your Gas fees exceed expected returns, then the position is economically unreasonable.

Disclaimer: This article is for reference only and should not be regarded as financial or investment advice.