# Supply & Borrow APY

last updated on: Mar 28 2022

APY is Initialism of annual percentage yield. It intends the total amount of interest over one year. The annual percentage yield is expressed as an annualized rate. The adjustment of APY is based on the utilization rate of the asset.

*The Utilization Rate is how much of the asset has been utilized*and is calculated a

*s*:

$Utilization Rate = Borrowing/(Supplying-Reserves)×100$

When the utilization rate is

**less than 90%**, the annuaized interest rate is calculated as:$Borrow APY= 1.9+ 15 × Utilization Rate$

When the utilization rate is

**greater than or equal to 90%**, the annualized interest rate is calculated as:$Borrow APY = - 746 + 846 × Utilization Rate$

$SupplyAPY= Borrow APY×Utilization Rate × 0.85$

When the utilization rate is

**less than 80%**, the annuaized interest rate is calculated as:$Borrow APY= 1.9+ 15 × Utilization Rate$

When the utilization rate is

**greater than or equal to 80%**, the annualized interest rate is calculated as:$Borrow APY =-330.5+430.5×Utilization Rate$

$SupplyAPY= Borrow APY×Utilization Rate × 0.85$

When the utilization rate is

**less than 60%**, the annuaized interest rate is calculated as:$Borrow APY= 2+ 10.5× Utilization Rate$

When the utilization rate is

**greater than or equal to 60%**, the annualized interest rate is calculated as:$BorrowAPY = - 54.25 + 104.25 ×Utilization Rate$

$SupplyAPY= Borrow APY×Utilization Rate × 0.8$

When the utilization rate is

**less than 60%**, the annuaized interest rate is calculated as:$Borrow APY= 2 + 10.5×Utilization Rate$

When the utilization rate is

**greater than or equal to 60%**, the annualized interest rate is calculated as:$BorrowAPY = - 54.25 + 104.25 ×Utilization Rate$

$SupplyAPY= Borrow APY×Utilization Rate × 0.75$

Asset | Max Collateral ratio |
---|---|

USDT | 80% |

USDC | 80% |

BUSD | 80% |

VAI | 70% |

BTC | 60% |

ETH | 60% |

WBNB | 60% |

ZIL | 35% |

BABY | 25% |

WING | 35% |

ONT | 50% |

ONG | 45% |

The collateral ratio is depended on the token activity, and can be adjusted through voting.

Last modified 9mo ago