Liquidity Impact Simulations For Interest Rates
Using the interest rate model to simulate the impact of large deposit and borrow events on Aave.
What Liquidity Impact shows
The Liquidity Impact section on the Aavescan website shows how interest rates will change if a large deposit occurs or if a large amount is borrowed. This information helps users to understand the sensitivity of market rates and can help users to plan deposits and manage risk. For example, the liquidity impact section can tell you if the supply APR will decrease dramatically if you were to make a large deposit.
Here's a screenshot of the Liquidity Impact section for Aave V3 USDT:
| Deposit | Supply APR | Borrow APR | Utilization |
|---|---|---|---|
| Current | 4.26% | 5.32% | 88.94% |
| $100.0M deposit | 4.10% (-0.15%) | 5.11% (-0.43%) | 75.39% |
| $250.0M deposit | 3.82% (-0.29%) | 4.80% (-0.74%) | 53.09% |
| $500.0M deposit | 3.52% (-0.42%) | 4.48% (-1.09%) | 44.81% |
| $1.00B deposit | 3.02% (-1.24%) | 3.62% (-1.95%) | 34.95% |
How the calculations work
Aavescan simulates the onchain mechanism which determines the supply APR and borrow APR for a given market state. Using a set of parameters, known as the interest rate model, we can calculate how sharply rates will increase as more or less assets are borrowed from the lending pool.
Aavescan uses the exact same parameters and calculations as those contained within the Aave lending contracts in order to simulate rate changes with precision.
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Inputs:
- U – current utilization (borrowed / supplied).
- Curve – a function mapping the utilization to the borrow rate, using the optimal utilization and slope parameters.
Practical considerations
- Simulations show theoretical outcomes that may be invalidated in practice. For example, a large borrow could cause a sharp increase in interest rates only for them to be brought back down again by new deposits soon after. With that understanding, the value of the liquidity impact simulation is to give a sense of the market shape and configuration.
- Interest rates are driven by market behaviour which is determined by many external factors. Some participants respond immediately and automatically when rates deviate from benchmarks.
- Interest rate parameters can change frequently while the Aave team is managing risk and incentives, especially during volatile market periods. Aavescan uses live market parameters to ensure the simulation is accurate.
- Interest rates reflect the instantaneous rewards for supplying in a market and do not account for bonus rewards from liquidation fees and compounding.
Where to access the data
You can explore the Liquidity Impact section directly on any asset page at aavescan.com. The same inputs that power the simulation are also available through the Aavescan API so you can recreate the calculation programmatically.
Practical uses
- Preview the rate impact of a planned deposit or borrow.
- Estimate how much headroom for borrows and withdrawals remains before rates increase sharply.
- Understand the sensitivity of the market configuration in comparison with other markets.
Disclaimer: Information provided is educational and not financial advice. Always conduct your own research before using DeFi platforms.