For many years, U.S. companies and their residents could own foreign companies that were inactive business and at the same time could access extremely lower tax rates while the income generated was not returned to the United States. This was before the Tax and Employment Cuts Act was effectively in place, as Accounting Today recently reported about the impact of the Trump tax reform on international companies with U.S. owners Active business income occurs when almost all of the company's gross profits come from its commercial activities. But on the other hand, we have what is known as a passive activity, which will occur when a company has income specifically from investors or rental, and when this was not managed by a U.S. resident. However, companies will have a limit on how much passive activity they can have. If they overcome it, they will run the risk of becoming passive companies. One of the changes brought about by the new tax reform is the possibility of reducing, even a little, the high rate that U.S. residents had. With the new reform, the percentage will decrease to 37%. The companies managed to benefit more from this new reform since their percentage decreased to 21%. This new percentage means that the difference in percentages with countries such as Ireland is considerably reduced. In turn, greater compliance on the part of residents could generate a major shift towards the United States for those people who own a business.