The term "other business purposes" is a broad and vague phrase that can refer to any number of activities or transactions related to running a business. It generally refers to anything that does not fall under the specific categories of expenses such as rent, utilities, salaries, supplies, etc., but is still necessary for the overall functioning and success of the company.
Some examples of "other business purposes" could include: marketing or advertising costs, travel expenses related to meetings or conferences, legal fees, office equipment purchases, research and development, or any other cost that is deemed necessary for the operation of a business but does not fit into one of the standard categories.
In short, "other business purposes" encompasses any activity or expense that supports the overall goals and objectives of the company, but may not be directly related to its day-to-day operations.