> For the complete documentation index, see [llms.txt](https://yupana-finance.gitbook.io/yupana-document-portal/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yupana-finance.gitbook.io/yupana-document-portal/developer-space/interestrate-contract/on-chain-views/getborrowrate.md).

# getBorrowRate

calculates $$BorrowRate$$ against `params`

$$
U(x) = UtilisationRate(x)
$$

$$
BorrowRate = \begin{cases}
baseRate + U(params) \* multiplier & \text{if } U(params) \leqslant kink\\
baseRate + kink \* multiplier + (U(params) - kink) \* jumpMultiplier & \text{if } U(params) > kink\\
\end{cases}
$$