Track & query expenses via Telegram with GPT-4.1 mini & Google Sheets

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Important notice

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

1. Workflow Overview

Description Track and query your expenses effortlessly through Telegram using voice or text messages. This AI powered workflow transcribes voice input via AssemblyAI, processes transactions with a ...

Best for

Personal Productivity automation workflows
AI Chatbot automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.telegramtrigger, n8n-nodes-base.switch, n8n-nodes-base.telegram, n8n-nodes-base.httprequest, n8n-nodes-base.if, n8n-nodes-base.googlesheets, n8n-nodes-base.code, n8n-nodes-base.googlesheetstool

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Sridevi Edupuganti.

Original n8n.io source

1.1 Workflow description

Title: Track & query expenses via Telegram with GPT-4.1 mini & Google Sheets
Workflow name: Track & query expenses via Telegram with GPT-4.1 mini & Google Sheets

Description

Track and query your expenses effortlessly through Telegram using voice or text messages. This AI-powered workflow transcribes voice input via AssemblyAI, processes transactions with a GPT-4.1 mini agent, stores data in Google Sheets with comprehensive timestamp metadata, and responds with both voice and text confirmations.

Key Features:

Multi-modal input: Send expenses via voice messages or text
Intelligent processing: AI agent automatically categorizes transactions, calculates running balance, and handles multiple expenses in a single message
Conversational queries: Ask questions like "What did I spend on food last week?"
Voice responses: Get spoken confirmations using OpenAI TTS
Smart alerts: Automatic Gmail notifications for low balance thresholds
Cost tracking: Monitors and logs all API usage costs (LLM + TTS) in USD and INR

Perfect for:

Personal finance management with minimal effort
Small business expense tracking with audit trails
Shared household or team budgets
API cost monitoring for developers

Each transaction includes detailed metadata (timestamps, categories, run IDs, source text) enabling powerful time-based analytics and queries.

Requirements: Telegram bot, Google Sheets OAuth, OpenAI API key, AssemblyAI API key, Gmail OAuth (optional)

Support: Join n8n Discord or Community Forum README file available at https://drive.google.com/file/d/1mh9FRm7zemdazNpjyEq9uhHSc_9go7PN/view?usp=sharing

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 - Telegram Input

Type / Role: n8n-nodes-base.telegramTrigger - telegramTrigger
Config choices: Version 1.2

Block 2 - Route by Message Type

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 3.3

Block 3 - Check Voice Quality

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 3.3

Block 4 - Send Processing Notification (Voice)

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 5 - 🎙️ Download Voice File

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 6 - Upload to AssemblyAI

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 7 - Start Transcription

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 8 - Get Transcription Result

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 9 - Check Transcription Status

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

Block 10 - Send Processing Notification (Text)

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 11 - Read Transaction History

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 12 - Calculate Starting Balance

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 13 - Append Transaction to Sheet

Type / Role: n8n-nodes-base.googleSheetsTool - googleSheetsTool
Config choices: Version 4.7

Block 14 - Read Sheet for Queries

Type / Role: n8n-nodes-base.googleSheetsTool - googleSheetsTool
Config choices: Version 4.7

Block 15 - Send Low Balance Alert

Type / Role: n8n-nodes-base.gmailTool - gmailTool
Config choices: Version 2.1

Block 16 - GPT-4.1 Mini Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatOpenAi - lmChatOpenAi
Config choices: Version 1.2

Block 17 - Conversation Memory

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

Block 18 - Generate Voice Response

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 19 - Send Voice to Telegram

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 20 - Send Text to Telegram

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 21 - AI Expense Analyzer

Type / Role: @n8n/n8n-nodes-langchain.agent - agent
Config choices: Version 2.2

Block 22 - Wait for Transcription

Type / Role: n8n-nodes-base.wait - wait
Config choices: Version 1.1

Block 23 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 24 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Showing the first 24 of 32 workflow blocks. Download the JSON for the full node graph.

3. Summary Table

Workflow	Track & query expenses via Telegram with GPT-4.1 mini & Google Sheets
Complexity	advanced
Nodes	32
Categories	Personal Productivity, AI Chatbot
Author	Sridevi Edupuganti
Published	29 Oct 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/10290/10290.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 Personal Productivity workflows AI Chatbot workflows

Frequently asked questions

What does Track & query expenses via Telegram with GPT-4.1 mini & Google Sheets 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 Personal Productivity, AI Chatbot use case.

Sridevi Edupuganti

10 workflows

Nodes

n8n-nodes-base.telegramtrigger n8n-nodes-base.switch n8n-nodes-base.telegram n8n-nodes-base.httprequest n8n-nodes-base.if n8n-nodes-base.googlesheets n8n-nodes-base.code n8n-nodes-base.googlesheetstool

Complexity

advanced

Published 29 Oct 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/10290/10290.json

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Track & query expenses via Telegram with GPT-4.1 mini & Google Sheets

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Telegram Input

Block 2 - Route by Message Type

Block 3 - Check Voice Quality

Block 4 - Send Processing Notification (Voice)

Block 5 - 🎙️ Download Voice File

Block 6 - Upload to AssemblyAI

Block 7 - Start Transcription

Block 8 - Get Transcription Result

Block 9 - Check Transcription Status

Block 10 - Send Processing Notification (Text)

Block 11 - Read Transaction History

Block 12 - Calculate Starting Balance

Block 13 - Append Transaction to Sheet

Block 14 - Read Sheet for Queries

Block 15 - Send Low Balance Alert

Block 16 - GPT-4.1 Mini Model

Block 17 - Conversation Memory

Block 18 - Generate Voice Response

Block 19 - Send Voice to Telegram

Block 20 - Send Text to Telegram

Block 21 - AI Expense Analyzer

Block 22 - Wait for Transcription

Block 23 - Sticky Note

Block 24 - Sticky Note1

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