Please determine the tax consequences of the following transactions (consider the impact of all of these transactions together and not as separate fact patterns):

1. Tractor Corp receives $100,000 of interest income from a Bank based on its checking account balance.
2. Tractor Corp receives a dividend from Wheeling It, Inc., a U.S. subsidiary corporation, in the amount of $300,000 and a dividend of $50,000 from Microsoft stock. Tractor owns 85% of the stock of Wheeling It, Inc. and less than 1% of stock of Microsoft.
3. Tractor Corp makes a charitable contribution in the amount of $750,000 to the United Way (a public charity under IRC Section 501(c) (3).
4. Tractor Corp has an unused NOL carryforward from prior years in the amount of $1,250,000.