Not to be confused with Yukon wolf. The northwestern wolf, Canis lupus occidentalis, also known as the Mackenzie Valley wolf or northern timber wolf is a subspecies of gray wolf in western North America. It ranges from the upper Mackenzie River Valley, southward into central Alberta.
The executor must file a federal income tax return (Form 1041) if the estate has: 1  gross income for the tax year of $600 or more, or. 2  a beneficiary who is a nonresident alien.
What Information Is Needed for Tax Returns? A tax return is a document you must file with the government showing how much income you earned in a particular year. For personal federal income tax filings, there are three forms to choose from: Form 1040, Form 1040A and Form 1040EZ.