Borrow Rate

At any point in time one may query the contract to get the current borrow rate per block.
AErc20 / CEther
function borrowRatePerBlock() returns (uint)
  • RETURN: The current borrow rate as an unsigned integer, scaled by 1e18.
AErc20 aToken = AToken(0x3FDA...);
uint borrowRateMantissa = aToken.borrowRatePerBlock();
Web3 1.0
const aToken =;
const borrowRate = (await aToken.methods.borrowRatePerBlock().call()) / 1e18;