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

# fCash

fCash tokens are the building blocks of the Notional system. fCash are transferable tokens that represent a claim on a positive or negative cash flow at a specific point in the future. 

![](https://1632304260-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MI0SmezuP0sAu-OXOVm%2F-MIpcQofe_ca2fuoHsuE%2F-MIVcutl5jmKoDsqFnwL%2Ffcash%201.png?alt=media\&token=d0c6bcd3-92fb-4fa2-927a-7fe5ad018f1d)

fCash tokens are always generated in pairs: assets and liabilities. Assets and liabilities always net to zero across the Notional system.

![](https://1632304260-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MI0SmezuP0sAu-OXOVm%2F-MIpcQofe_ca2fuoHsuE%2F-MIVd7RweQgMGSsf80xl%2Ffcash2.png?alt=media\&token=56fd8215-ee56-4196-ba2a-0c3947d4a324)