1.  Corporate Tax (C-corps)

Previously, income was taxed on a graduated basis with income over $10M at a rate of 35%.  The overhaul revises this to a flat tax rate of 21%.  Corporate AMT was also repealed.

2.  Accounting Method

The cash method of accounting has been expanded to include taxpayers with gross receipts averaging less than $25M in the 3 prior tax years.  This includes farming C corps.  Entities that meet the $25M threshold will also not be required to account for inventories under section 471.

3.  Expenses and Deductions

Disallowed deductions going forward include:  expenses related to activities of entertainment or recreation, membership dues for clubs that are generally designed for business, pleasure, recreation, or another social purpose.