Let’s say you plan to use a C corporation to operate a newly acquired business or you have an existing C corporation that needs more capital. You should know that the federal tax code treats corporate debt more favorably than corporate equity. So for shareholders of closely held C corporations, it can be a tax-smart move to include in the corporation’s capital structure: Some third-party debt (owed to outside lenders), and/or Some owner debt. Tax rate considerations Let’s review some basics. The top individual federal income tax rate is currently 37%. The top individual federal rate on net long-term capital gains and qualified dividends is currently 20%. On top of this, higher-income individuals may also owe the 3.8% net investment income tax on all or part of their investment income,...