Form 1120 – C Corporation Income Tax

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This course is designed for those interested to learn the basics of using Form 1120 in filing C corporation income tax by putting together a systematic format of entering data and using M1 adjustments to isolate adjustments and review tax forms in worksheets.

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About This CourseBeginner

This course currently consists of a comprehensive problem showing the data input process of a C Corporation into tax Form 1120. It will put together a systematic format of entering data into a Form 1120 that will minimize errors, isolate problems as they happen, and remove the possibility of having to start the process all over again.

We will enter each M-1 adjustment individually into both the tax return and an Excel worksheet so that we fully understand how M-1 adjustments function. We will start by reviewing the data for the comprehensive problem. Then we will enter the data into an Excel worksheet that will be used to help us organize the information.

The course will demonstrate how to enter the data into the tax forms in stages to reduce potential mistakes and to identify mistakes as they happen so they can be fixed as easily as possible.

We will start the data input with the balance sheet. Then we will enter the income statement as it is formatted in the adjusted trial balance. Next, we will systematically go through the M-1 adjustments. We will isolate these adjustments, reviewing them on the tax forms, in the software, and using our Excel worksheet. We will then review the tax forms.

Our Promise to You

By the end of this course, you will have learned income tax input to Form 1120.

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Get started today and learn more about using Form 1120 for C Corporation income tax.

Course Curriculum

Course Sections

C Corporation Income Tax Introduction

Downloadable Materials – Form 1120 C-Corp Income Tax

Review Data

Excel Worksheet

Review Tax Return

Enter Beginning Balances


Balance Sheet

Income Statement

Retained Earning Reconciliation

Book Depreciation Adjusting Entry

M-1 Depreciation

M-1 Sale Of Equipment

M-1 Federal Income Tax

Depreciation Fix Error

M-1 Meals

M-1 Bad Debt

M-1 Tax Exempt Interest

Schedule C Dividends

Schedule D Capital Gain

Capital Loss Carryover

Officer Compensation

Interest Income Adjustment

Cost Of Goods Sold

Estimated Payments

Review And Diagnostics


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