How Does Stablecoin Yield Work?
Where does stablecoin yield come from? How DeFi lending generates interest on USDC, USDT, and DAI explained simply.
When you earn yield on stablecoins, you might wonder: where does the interest actually come from? Unlike a bank, there's no central authority setting rates. The yield comes from real market activity.
DeFi lending: supply and demand
When you deposit USDC into Aave, you're lending it to borrowers. These borrowers pay interest because they want to: leverage their crypto positions, short-sell assets, or access liquidity without selling their holdings. The interest they pay flows to you.
Why do rates change constantly?
DeFi lending rates are set algorithmically based on utilization rate — the percentage of supplied funds that are borrowed. When more people borrow (high demand), rates go up. When borrowing slows, rates fall. This happens continuously and in real time.
CeFi: how companies generate yield
CeFi platforms like Binance use your deposited stablecoins in various ways: lending to institutional borrowers, market making, deploying to DeFi protocols themselves. They pay you a fixed rate and keep the difference as profit.
Is the yield sustainable?
Yes — stablecoin yield from lending is economically sustainable because it's backed by real borrowing demand. This is different from unsustainable 'yield farming' rewards which inflate token supplies. Lending yield (like on Aave) has existed since 2018 and continues today.