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How do you determine “excess cash” for Enterprise Value calculations from a balance sheet?
20% is almost certainly too high. I agree with 2%, as a very rough rule. It will vary significantly depending on the industry. I generally calculate an average of the previous 2-3 years working capital, and deduct that from cash. Working capital is Current Assets less Current Liabilities. Current Assets is comprised of cash, prepaid expenses, and significantly, accounts receivable. This means that CA is likely to be much higher than just cash, which leaves more excess cash after liabilities are deducted. Which reduces EV, which makes the EV/EBITDA ratio look even more pricey, as Dimitri noted. But a balance sheet is just a snapshot of the final day of the quarter. As such, and because of seasonal effects, it's critical to smooth this by averaging several periods. After calculating this for a few companies, compare to revenue. Is it close to 2%?