“Territoriality” is one of the key buzz words in this year’s tax reform lingo, with many proposals urging a shift away from our current “worldwide” system of income taxation for business income. This post expands on what features a “territorial” system might include.

The Basics.  A worldwide system of income taxation taxes residents of the taxing jurisdiction on all of their income, both foreign and domestic (usually with a credit for foreign taxes paid). A territorial system, on the other hand, theoretically taxes only income earned in the taxing jurisdiction. In practice, however, the lines between a territorial and worldwide system are rarely, if ever, this clear.
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