A sinking fund is a fund created by an organization to:
Replace fixed assets when they become obsolete, or
Repay long-term liabilities at the time of maturity.
It is a long-term provision to ensure that funds are available when needed, without affecting regular operations.
Other options:
Capital Reserve: Created from capital profits, not for repayment or replacement.
Reserve Capital: Portion of uncalled capital kept as a backup, not actively used.
Common Good Fund: Used for community or member welfare purposes.