How much money should be in your cash float depends on the average value of sales your business conducts. If your average sales come to around $300, then keeping about $300 as float can work. But remember to stock your float with coins and small bills so that you can provide the appropriate amount of change. Try to avoid having too little or too much float. The too little float will mean you can’t give change to customers while too much float could open opportunities for theft and mismanagement.