Before getting into induldged one should be clear about the concept. Fund flow is the movement of Current Assets or Current liabilities in a defined period which may result into increase/ decrease in the working capital of an entity or even it may be stable in case where inflows and outflow of funds is equal.
Now as a layman we may concentrate on the issue;
The movement of funds may be from non Current item to Current item or vice-versa.,e.g, Acquisition of A Fixed Asset or its disposal.
Or, the movement may be from Balance Sheet Item to Revenue item appearing in P&L A/c.e.g, Funds from Operations.
So, we should first find out inflows and outflows from Operational Activities.
Thereafter, we may find out the inflows/Outflows from Non Current Assets/Liabilities to Current Assets/Liabilities.
The effect of all these items is the fund flow during the period and the same may be applied on the Opening Working Capital to derive the Closing Working Capital.
Cash Flow Statement may be prepared from the Fund Flow Statement by giving effect of change in Current Assets and Liabilities other than cash in the given period.