EV and EBITDA
EV/EBITDA approximates how much operating profit is paid before depreciation. It makes it easier to compare different debt, but EBITDA is not cash: it excludes capex, working capital, interest and taxes.
EV/Sales
It is used when profits are negative or margins are changing. Two companies at 5x sales are not equivalent if one converts 30% in FCF and another loses money. The multiple only makes sense next to the sustainable margin.
Example
A: 4x EV/Sales and 25% target margin implies 16x EV/operating profit. B: 2x and 5% margin implies 40x. The seemingly cheap one can be more expensive.
Necessary settings
Includes debt, cash, leases and minorities consistently. Normalizes EBITDA without deleting recurring costs and checks capitalization of expenses. Use the same period and currency.
Use by scenarios
Project sales and margin, apply an exit multiple, subtract future net debt, and divide by diluted shares. Sensitize the three variables: small variations combined produce very different targets.