What does '$9,999.99' indicate?

The indication of '$9,999.99' represents a currency format. This format is used to denote financial amounts, typically in US dollars, and includes the dollar sign at the front followed by the numerical value broken down into whole dollars and cents.

When presented in this manner, it clearly communicates that the figure refers to a specific monetary value, differentiating it from other formats such as percentages, which are expressed as a fraction of 100; quantities, which refer to amounts of items; or decimals, which can represent numerical values generally without a direct financial context. The specific use of the dollar sign is a hallmark of currency formatting, clearly signaling that the displayed number is intended to express money.