In the United States, the threshold for a business to begin owing income taxes depends on the business type and the taxable income. Sole proprietorships, for example, must file a tax return if they make $400 or more in net earnings from their business. However, the thresholds are different for corporations and can be quite complex due to the various tax laws and regulations in place. It's imperative to consult with a tax professional or tax advisor to understand your specific tax obligations better. Remember, in our metaphorical chess game of tax planning, having a knowledgeable advisor is akin to having a grandmaster guiding your moves!