> For the complete documentation index, see [llms.txt](https://docs.hashstack.finance/hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hashstack.finance/hub/concepts/permissible-cdr.md).

# Permissible CDR

Permissible collateral to debt ratio is a value calculated by the protocol. It *assess various parameters* to find the reliability and loan-to-value (LTV) ratio of a borrower such as repayment history, collateral to debt correlation, and overall market risk.