Which of the following is not taxable?

The correct answer is that allowances are generally not taxable income. In many financial contexts, certain allowances, like those provided for travel or subsistence, are designed to reimburse employees for costs incurred while performing their job duties. Since these allowances are intended to cover specific expenses rather than serve as compensation, they typically do not count as taxable income.

In contrast, bonuses are considered additional compensation for services rendered and do incur tax liabilities. Similarly, income generated from investments is subject to taxation, typically captured under capital gains taxes or as dividend income. Property sales may also be taxable, especially if there is a realized gain upon the sale of the property. Understanding these distinctions helps clarify the tax implications tied to different forms of compensation and income.