Automate corporate tax filing for SMEs with GPT-5.2-Pro, Gmail, and Google Drive
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
Nodes used (11)
- Schedule Trigger
n8n-nodes-base.scheduleTrigger - Edit Fields (Set)
n8n-nodes-base.set - AI Agent
@n8n/n8n-nodes-langchain.agent - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Calculator
@n8n/n8n-nodes-langchain.toolCalculator - Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured - Gmail Tool
n8n-nodes-base.gmailTool - Google Drive Tool
n8n-nodes-base.googleDriveTool - If
n8n-nodes-base.if - Code
n8n-nodes-base.code - HTTP Request
n8n-nodes-base.httpRequest
What it does
How It Works This workflow automates monthly tax filing processes by retrieving financial data, performing AI-driven tax calculations, coordinating pre-filing reviews with key stakeholders, incorporating feedback, and managing overall submission readiness. It pulls accounting records, executes GPT-5–based tax calculations with transparent reasoning, formats comprehensive pre-filing reports, and routes them to a submission coordinator via email for review. The system captures reviewer feedback through structured prompts, intelligently applies necessary corrections, archives finalized records in Google Drive, and continuously tracks filing status. It is designed for accounting firms, tax practices, and finance departments that require coordinated, multi-stakeholder tax filing with minimal manual intervention. Setup Steps 1. Connect accounting system and configure financial data fetch parameters. 2. Set up OpenAI GPT-4 API for tax calculations and reasoning extraction. 3. Configure Gmail, Chat Model, and Google Drive credentials. 4. Define submission coordinator contacts and configure feedback. Prerequisites Accounting system access; OpenAI API key; Gmail account; Google Drive Use Cases Tax firms managing multi-client monthly filings with partner review Customization Modify tax calculation prompts for jurisdictions, adjust feedback collection fields Benefits Eliminates manual filing coordination, reduces submission errors