Posted On: January 28, 2008 by Michael J. Hamblin

Tax Issues in Converting a Michgian C Corporation to an S Corporation

One advantage Michigan C corporations have over S corporations is the ability to reinvest profits in the corporation at a lower tax cost than S corporations. This is because the current lowest corporate income tax bracket is 15% for profits up to $50,000. The individual income tax bracket of a company's owner is often higher than 15%. So if that owner wanted to reinvest S corporation profits back into the S corporation, he or she could do so only after paying personal income tax on those profits at their personal income tax rate (because of the "flow through" tax treatment of S corporations). Since a C corporation is not a "flow through" tax entity, any profits not distributed to the shareholders (such as those reinvested back into the corporation) are taxed at the corporate level only.

So, let's say a start-up corporation decides to operate as a C corporation to take advantage of the lower tax cost of reinvesting profits back into the company. At some point, the company may exhaust its desire for reinvesting its profits, and decide that it wants to start distributing its profits to its shareholders. At this point, double taxation becomes an issue because in a C corporation, profits will first be taxed at the corporation level when they are booked, then again at the shareholder level when they are distributed to the shareholders.

The answer may be to convert the C corporation to an S corporation so that profits will only be taxed one time. The mechanics of switching from a C corporation to an S corporation are simple enough. Becoming an S corporation is simply a tax election that is made by filing the appropriate paperwork with the IRS. A corporation's shareholders can make this election any time during the corporation's existence. If the shareholders elect S corporation status, all future earnings will be taxed at their individual income tax rates, without being taxed at the corporate level.

But, corporations contemplating this move must be very careful. This is because any of the corporation's earnings before the S election will forever be marked and given special tax treatment under rules governing S corporations. If those earnings are ever distributed to the corporation's shareholders, they will be taxed as dividends and, even worse, will be subject to the double tax regime imposed on C corporations.

Corporations or stockholders who are contemplating changing their C corporation to an S corporation should consult with a Michigan business lawyer who can help them work through the possible tax pitfalls of making this move.