form-1120-prep

Automate federal Form 1120 preparation with trial balance reconciliation and Schedule M-1/M-3.

Updated Mar 13, 2026
One-click install
npx skills add https://github.com/AeyeOps/aeo-basis-plugin-marketplace --skill form-1120-prep
Or copy as Structured Prompt for Agent
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Skill: form-1120-prep
Source: https://github.com/AeyeOps/aeo-basis-plugin-marketplace/tree/main/plugins/tax-prep/skills/form-1120-prep
Command: npx skills add https://github.com/AeyeOps/aeo-basis-plugin-marketplace --skill form-1120-prep

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill automates the complex process of preparing federal Form 1120 for C-corporations, ensuring accurate reconciliation of financial statements to tax returns and compliance with tax law.

Core Features & Use Cases

  • End-to-End Preparation: Guides users through the entire Form 1120 preparation workflow, from trial balance to final reconciliation.
  • Book-Tax Difference Identification: Systematically identifies and classifies permanent and temporary differences between book and tax accounting.
  • Schedule M-1/M-3 Reconciliation: Facilitates the accurate preparation of Schedule M-1 or M-3, crucial for reconciling net income.
  • GL Account Mapping: Provides a structured approach to mapping general ledger accounts to specific Form 1120 lines.
  • Use Case: A tax professional can use this Skill to efficiently prepare a Form 1120 return, ensuring all book-tax adjustments are correctly identified and reported, minimizing audit risk.

Quick Start

Use the form-1120-prep skill to prepare a federal Form 1120 C-corp return.

Frequently Asked Questions about form-1120-prep

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I prepare Form 1120 from a trial balance?

Preparing Form 1120 from a trial balance involves mapping general ledger accounts to specific tax form lines. The process automates trial balance reconciliation to systematically identify book-tax differences and ensure accurate return line reporting.

What is the best way to reconcile book-tax differences for a C-corp return?

Reconciling book-tax differences for a C-corp return is best handled by systematically identifying permanent and temporary accounting adjustments. This process synthesizes financial data with tax law to accurately classify adjustments for Schedule M-1 or M-3 preparation.

How does Schedule M-1 reconciliation work for C-corporation taxes?

Schedule M-1 reconciliation works by mapping identified book-tax differences to reconcile net income recorded on financial statements with taxable income. This ensures accurate classification of permanent and temporary accounting differences for the C-corporation return.

Can I automate general ledger account mapping for Form 1120?

Yes, you can automate general ledger account mapping for Form 1120. The process provides a structured approach to map GL accounts directly to specific tax form lines, synthesizing accounting data with tax law to ensure accurate reporting.

When do I need Schedule M-3 instead of Schedule M-1 for my C-corp return?

You need Schedule M-3 instead of M-1 for your C-corp return when detailed reconciliation of book-tax differences is required. The preparation workflow facilitates accurate completion of either schedule to properly reconcile net income and minimize audit risk.