Why should a firm not carry too much cash?

A firm should avoid holding too much cash because excess cash creates opportunity costs. Cash is highly liquid and useful for transactions, precautionary needs, and flexibility, but it normally earns a lower return than productive investments such as equipment, expansion projects, debt reduction, or marketable securities with higher yields. When a company keeps more cash than needed for operations and risk management, it sacrifices the potential return that those funds could have earned elsewhere. Financial management emphasizes balancing liquidity against profitability. Too little cash can create distress and limit the ability to pay obligations on time, while too much cash can weaken overall performance by leaving resources idle. Choice C is correct because opportunity cost is the most direct financial drawback of excessive cash balances. Choice A is incorrect because firms do not pay interest simply for holding cash. Choice B is also incorrect because cash itself does not automatically create higher taxes in the way described. Choice D is not a valid financial objective. Therefore, C is the correct answer because unused cash can reduce shareholder value when it is not deployed in higher-return uses.

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