Reconcile bank transactions and generate reports with GPT-4 and Gmail

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Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

How It Works This workflow automates end to end financial transaction processing for finance teams managing high volume bank data. It eliminates manual reconciliation by intelligently classifying t...

Best for

Document Extraction automation workflows
AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.scheduletrigger, n8n-nodes-base.set, n8n-nodes-base.httprequest, n8n-nodes-base.merge, @n8n/n8n-nodes-langchain.agent, @n8n/n8n-nodes-langchain.lmchatopenai, @n8n/n8n-nodes-langchain.outputparserstructured, @n8n/n8n-nodes-langchain.toolcalculator

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Cheng Siong Chin.

Original n8n.io source

1.1 Workflow description

Title: Reconcile bank transactions and generate reports with GPT-4 and Gmail
Workflow name: Reconcile bank transactions and generate reports with GPT-4 and Gmail

How It Works

This workflow automates end-to-end financial transaction processing for finance teams managing high-volume bank data. It eliminates manual reconciliation by intelligently classifying transactions, detecting anomalies, and generating executive summaries. The system pulls transaction data from Fable Bank, routes it through multiple AI models (OpenAI GPT-4, NVIDIA NIM) for classification and analysis, reconciles accounts, and distributes formatted reports via email. Finance managers and accounting teams benefit from reduced processing time, improved accuracy, and real-time anomaly detection. The workflow handles transaction categorization, reconciliation schema generation, account matching, journal entry creation, and comprehensive reporting—transforming hours of manual work into minutes of automated processing with AI-enhanced accuracy.

Setup Steps

Configure Fable Bank API credentials for transaction data access
Add OpenAI API key for GPT-4 classification and reconciliation models
Set up NVIDIA NIM credentials for anomaly detection services
Connect Google Sheets for reconciliation schema storage
Configure Gmail account for automated report distribution

Prerequisites

OpenAI API account with GPT-4 access

Use Cases

Monthly financial close automation, daily transaction monitoring for fraud detection

Customization

Replace Fable Bank with your banking API

Benefits

Reduces reconciliation time by 90%, eliminates manual data entry errors

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Daily Accounting Run

Type / Role: n8n-nodes-base.scheduleTrigger - scheduleTrigger
Config choices: Version 1.3

Block 2 - Workflow Configuration

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 3 - Fetch Bank Transactions

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 4 - Fetch Accounting System Data

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 5 - Combine Financial Data

Type / Role: n8n-nodes-base.merge - merge
Config choices: Version 3.2

Block 6 - Transaction Classifier Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3.1

Block 7 - Account Reconciliation Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3.1

Block 8 - Journal Entry Generator Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3.1

Block 9 - Error Detection Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3.1

Block 10 - Financial Statement Generator Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3.1

Block 11 - Tax Report Generator Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3.1

Block 12 - Tax Agent Communication Agent

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 3.1

Block 13 - OpenAI GPT-4

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.3

Block 14 - Transaction Classification Schema

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 15 - Reconciliation Schema

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 16 - Journal Entry Schema

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 17 - Error Detection Schema

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 18 - Financial Statement Schema

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 19 - Tax Report Schema

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 20 - Calculator Tool

Type / Role: @n8n/n8n-nodes-langchain.toolCalculator - toolCalculator
Config choices: Version 1

Block 21 - Gmail Tool

Type / Role: n8n-nodes-base.gmailTool - gmailTool
Config choices: Version 2.2

Block 22 - Post Journal Entries to System

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 23 - Format Final Report

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 24 - Send Summary Email

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.2

Showing the first 24 of 38 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Reconcile bank transactions and generate reports with GPT-4 and Gmail
Complexity	advanced
Nodes	38
Categories	Document Extraction, AI Summarization
Author	Cheng Siong Chin
Published	01 Jan 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/12377/12377.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Document Extraction workflows AI Summarization workflows

Frequently asked questions

What does Reconcile bank transactions and generate reports with GPT-4 and Gmail do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Document Extraction, AI Summarization use case.

Cheng Siong Chin

203 workflows

Nodes

n8n-nodes-base.scheduletrigger n8n-nodes-base.set n8n-nodes-base.httprequest n8n-nodes-base.merge @n8n/n8n-nodes-langchain.agent @n8n/n8n-nodes-langchain.lmchatopenai @n8n/n8n-nodes-langchain.outputparserstructured @n8n/n8n-nodes-langchain.toolcalculator

Complexity

advanced

Published 01 Jan 2026

Likes 0

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Install path: /data/workflows/12377/12377.json

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Reconcile bank transactions and generate reports with GPT-4 and Gmail

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

How It Works

Setup Steps

Prerequisites

Use Cases

Customization

Benefits

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Daily Accounting Run

Block 2 - Workflow Configuration

Block 3 - Fetch Bank Transactions

Block 4 - Fetch Accounting System Data

Block 5 - Combine Financial Data

Block 6 - Transaction Classifier Agent

Block 7 - Account Reconciliation Agent

Block 8 - Journal Entry Generator Agent

Block 9 - Error Detection Agent

Block 10 - Financial Statement Generator Agent

Block 11 - Tax Report Generator Agent

Block 12 - Tax Agent Communication Agent

Block 13 - OpenAI GPT-4

Block 14 - Transaction Classification Schema

Block 15 - Reconciliation Schema

Block 16 - Journal Entry Schema

Block 17 - Error Detection Schema

Block 18 - Financial Statement Schema

Block 19 - Tax Report Schema

Block 20 - Calculator Tool

Block 21 - Gmail Tool

Block 22 - Post Journal Entries to System

Block 23 - Format Final Report

Block 24 - Send Summary Email

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions