Use this form to report the income, gains, losses, deductions, credits, and to figure the income tax liability of insurance companies, other than life insurance companies.
Tax Reform Guidance for 1120 filers-- 09-APR-2018
Other Items You May Find Useful
About Publication 15 (Circular E), Employer's Tax Guide
About Publication 463, Travel, Entertainment, Gift, and Car Expenses
About Publication 526, Charitable Contributions.