The free cash flow to firm (FCFF) equation is used to calculate the amount available to debt and equity holders.
Where:
EBIT=Earnings before interest and taxes
Capex= Capital expenditures
`Delta`WC= Change in working capital
t= Tax rate
FCFF is a measurement of a company's profitability after all expenses and reinvestments. It is one of the many benchmarks used to compare and analyze financial health.