# Questions tagged [interest-rate]

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### can someone explain liquidations to me -for the case when price of borrowed asset suddenly goes up and in turn exceeds the supplied collateral value?

I understand concept of liquidations, which is when the value of collateral drops below the borrowed asset value - this can happen either when : collateral asset value drops borrowed asset value ...
104 views

### Why USDC interest rates are so high compared to USD interest rates?

USDC is a stable coin, pegged to USD, so there should be no risk (or very little) from owning some. However, the lending rate for USDC is between 3% and 13%: https://defirate.com/usdc/ Since higher ...
• 123
87 views

### Calculating AAVE intereset rate belonging to different users that transferred into a smart contract

I have a smart contract that accepts user funds and adds them to an AAVE lending pool (DAI for example). Something like this: lendingPool.deposit(stableCoinAddress, amount, address(this), 0); As you ...
429 views

### Rounding fixed point integers

If I'm using fixed-point arithmetic to represent rates, for example, 2% in ray (27 decimal precision) would be 102000000000000000000000000000. If I had a rate like 101333333333333333333333333333 (1.33%...
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183 views

### Converting to/from per-second and annualized interest rates with BigNumber.js

In the MakerDao contracts, there are conversions between annualized percentage rates and per-second percentage rates. For example, their Stability Fees documentation gives this example: If the ...
• 107
409 views

### How to Calculate How Long an Address Has Held A Token? (for paying interest/rewards)

I'm writing a smart contract function that rewards users some rate of interest/reward for holding my stablecoin over owning competitors (Dai, Tether, etc). What is the most efficient manner to ...
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