Life insurance companies use this form to report income, gains, losses, deductions, credits, and to figure their income tax liability. Current Revision Form 1120-L PDF Instructions for Form 1120-L (Print Version PDF) Recent Developments Relief from additions to tax for underpayments applicable to the new corporate alternative minimum tax -- 21-DEC-2023 Guidance on Determining a Corporation’s Estimated Tax Payment –- 20 -JUN-2023 Schedules Schedule M-3 (Form 1120-L), Net Income (Loss) Reconciliation for U.S. Life Insurance Companies With Total Assets of $10 Million or More This schedule reconciles financial statement net income (loss) with taxable income reported on Form 1120-L. It must be filed by life insurance companies with total assets of $10 million or more, and may be voluntarily filed by life insurance companies that are not otherwise required to file Schedule M-3 (Form 1120-L). Schedule M-3 (Form 1120-L) PDF Instructions for Schedule M-3 (Form 1120-L) (Print Version PDF) Other Items You May Find Useful All Form 1120-L Revisions EFTPS: The Electronic Federal Tax Payment System Taxpayer Advocate Service — Your Voice at the IRS About Publication 15 (Circular E), Employer's Tax Guide About Publication 463, Travel, Entertainment, Gift, and Car Expenses Other Current Products Related About Form 1042, Annual Withholding Tax Return for U.S. Source Income of Foreign Persons About Form 1118, Foreign Tax Credit - Corporations About Form 1120-X, Amended U.S. Corporation Income Tax Return