Module 9: DeFi Deep Dive
Yield Farming, Incentives, and Points
Chapter 10 of 14 · about 5 minutes
10.1 1,000% APY
Mint found a new pool advertising "1,000% APY." Deposits were pouring in.
Two weeks later, the APY had dropped to 80%. The reward token had fallen 85%. Mint's deposit, measured in dollars, was worth less than when it started, even counting the rewards.
"How can a 1,000% yield lose money?" Mint asked.
"Because the yield was paid in a token that everyone was selling as fast as they received it," said Hash. "Yield farming can be lucrative early, but the headline number is usually the least reliable thing on the page."
10.2 What yield farming is
Yield farming means moving capital into DeFi protocols to earn rewards, often in the protocol's own token, on top of any fees or interest. The rewards are called liquidity incentives or liquidity mining.
Protocols use incentives to attract users and liquidity quickly, especially when they launch. In a competitive market, incentives help a new protocol get the deep liquidity and activity it needs to be useful (Module 5, Chapter 13).
10.3 APR versus APY
Yields are quoted in two ways, and the difference matters.
APR (annual percentage rate) is a simple annual rate, without compounding.
APY (annual percentage yield) includes compounding: reinvesting rewards so they earn rewards too.
| APR | APY with daily compounding |
|---|---|
| 5% | ~5.1% |
| 20% | ~22.1% |
| 100% | ~171.5% |
At high rates, compounding makes APY look much larger than APR. But compounding assumes you actually reinvest daily, which costs gas and effort, and that the rate stays the same, which it rarely does. Advertised APYs on new pools are often calculated from a single day's rewards, extrapolated over a year.
10.4 Why headline yields collapse
| Reason | Effect |
|---|---|
| More deposits arrive | Fixed rewards are shared among more capital, so APR falls |
| Reward token price falls | Farmers sell rewards, pushing the token down, which lowers the dollar value of yield |
| Emission schedules decline | Many programs reduce rewards over time |
| Programs end | Incentives stop entirely |
Mint's pool showed all four. The 1,000% was real for the first few depositors, for a few days. After that, it was a number on a screen.
10.5 Measuring real farming returns
Farming return in dollars ≈ fees and interest + (reward tokens received × their price when sold) − impermanent loss − change in value of deposited tokens − gas and fees
The reward tokens' value depends heavily on when you sell. Rewards held for months may be worth far less than when they were earned. Many experienced farmers sell rewards regularly, rather than assuming they'll hold value.
10.6 Mercenary capital
Capital that moves wherever incentives are highest, and leaves as soon as they drop, is called mercenary capital (Module 5, Chapter 7). It inflates TVL and activity metrics temporarily, then disappears.
For protocols, this means incentives must be judged by how much activity remains after they end. For users, it means early farming can pay well, but late arrivals often get the worst of it: lower yields and falling reward tokens.
10.7 Points
Many newer protocols replace tokens with points: non-transferable credits for using the protocol, with the implied promise that points may later convert into a token airdrop.
| Token incentives | Points | |
|---|---|---|
| Value now | Tradable, has a market price | No market price; value unknown |
| Can you sell? | Yes | No, until any conversion |
| Dilution | Visible in token supply | Hidden until conversion |
| Rules | Usually public emission schedules | Often changeable at the protocol's discretion |
| Risk | Token price falls | Points may convert to little, or nothing |
Points let protocols attract users without committing to token economics upfront. For users, farming points is a bet on an uncertain future airdrop, while carrying the full risks of the underlying protocol. Points programs have also encouraged sybil farming (Module 6, Chapter 10), which protocols may filter out at conversion.
"So with points, I'm taking real risk for a promise of an unknown reward," said Mint.
"Often, yes," said Hash. "Sometimes the reward is generous. Sometimes it isn't. Price that uncertainty into your decision."
10.8 Vote-escrow and bribes
Some DeFi ecosystems use vote-escrow models, where users lock tokens for long periods to receive voting power over where incentives go (Module 5, Chapter 6). This created markets where protocols pay token holders, sometimes called bribes or vote incentives, to direct emissions to their pools.
These systems can align long-term holders with the protocol, but they're complex, and the value of locked tokens depends on continued demand for incentives.
10.9 Farming sensibly
- Identify every source of yield and whether it's fees, interest, incentives, or points.
- Value incentives conservatively, assuming the reward token may fall.
- Account for impermanent loss and gas.
- Check the underlying protocol's safety (Module 5, Chapter 10).
- Sell rewards on a plan, rather than holding by default.
- Be skeptical of very high APYs, especially from new, unaudited protocols.
- Use a separate wallet for experimental farms (Module 2, Chapter 12).
10.10 Try it yourself
Find a pool advertising a high APY that includes incentives. Break the APY into fees, interest, and incentives. Find the reward token's price chart over the past 30 days. Estimate what a $1,000 deposit would have actually earned in dollars over the last month, assuming you sold rewards weekly.
Key takeaways from this chapter
- Yield farming earns protocol incentives on top of fees or interest, often used to bootstrap liquidity.
- APY includes compounding and can look much larger than APR, often based on extrapolated short-term data.
- Headline yields collapse as deposits grow, reward tokens fall, emissions decline, and programs end.
- Real farming returns depend on the dollar value of rewards when sold, minus impermanent loss and costs.
- Mercenary capital chases incentives and leaves when they end; late arrivals often fare worst.
- Points offer uncertain future rewards with no current value and changeable rules.
- Farm sensibly: trace yield sources, value incentives conservatively, check safety, and sell rewards on a plan.