Borrow Rate

At any point in time one may query the contract to get the current borrow rate per block.

OErc20 / OEther

function borrowRatePerBlock() returns (uint)
  • RETURN: The current borrow rate as an unsigned integer, scaled by 1e18.


OErc20 oToken = OToken(0x3FDA...);
uint borrowRateMantissa = oToken.borrowRatePerBlock();

Web3 1.0

const oToken =;
const borrowRate = (await oToken.methods.borrowRatePerBlock().call()) / 1e18;

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