Yield Farming: Understanding APY vs. APR in DeFi
If you've spent any time in Decentralized Finance (DeFi), you've seen massive numbers like "1,000% APY." But what do these numbers actually mean, and how do they differ from APR? Understanding the APY vs. APR distinction is the first step to becoming a successful yield farmer.
The Basic Definitions
APR (Annual Percentage Rate)
APR is the simple interest rate over a year. It does not take into account the effect of compounding.
- Example: If you invest $1,000 at 10% APR, you will have $1,100 at the end of the year.
APY (Annual Percentage Yield)
APY is the interest rate that does include the effect of compounding.
- Example: If that same 10% is compounded monthly, your APY becomes 10.47%. If compounded daily, it’s even higher.
Why Yield Farmers Prefer APY
Yield farming is all about speed. By taking your rewards and immediately putting them back into the pool (compounding), you grow your principal faster. In DeFi, many protocols automate this process for you, which is why they advertise the APY.
The "Degen" APY Trap
High APY (e.g., 500%+) usually comes from new, highly volatile tokens. While the math looks good, the token price might drop 90% in a week, resulting in a net loss regardless of the yield. Always check the Impermanent Loss before entering a high-yield pool.
How to Maximize Your Yield
- Compound Frequently: The more often you compound, the higher your APY. Use a Compound Interest Calculator to see the difference between daily and monthly compounding.
- Watch Gas Fees: On Ethereum, compounding daily might cost more in transaction fees than you earn in interest.
- Diversify Pools: Don't put all your capital in one farm. Split between stablecoin pools and volatile pools to balance risk.
Summary
APR tells you the base rate; APY tells you the potential. If you aren't compounding your rewards, you are earning the APR, not the APY.
Verify the Numbers
Don't be fooled by protocol dashboards. Use our Yield Farming Calculator to see exactly what you'll earn after factoring in compounding and fees.