> For the complete documentation index, see [llms.txt](https://credit-guild.gitbook.io/introduction/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://credit-guild.gitbook.io/introduction/key-concepts/surplus-buffer.md).

# Surplus Buffer

The surplus buffer is a shared reserve for the protocol which is used to absorb any [bad debt](/introduction/key-concepts/bad-debt.md) prior to gToken values being marked down. A portion of interest paid by borrowers accrues to the surplus buffer, currently 5%. This ratio can be adjusted by governance. The surplus buffer is on a per-market basis, so gWETH, gUSDC, etc each have their own surplus buffer.