# Monitor revenue tax compliance and auto-correct anomalies: n8n workflow

> Started by a clock, and works across Gmail and WhatsApp. It hands the judgement calls to Claude. 17 steps: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/monitor-revenue-tax-compliance-and-auto-correct-anomalies (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Money admin](https://millionrounds.com/workflows?category=Money+admin#library)

# Monitor revenue tax compliance and auto-correct anomalies

Started by a clock, and works across Gmail and WhatsApp. It hands the judgement calls to Claude. 17 steps: a working afternoon to understand properly.

Medium Calls a model: Claude

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fmonitor-revenue-tax-compliance-and-auto-correct-anomalies)

**17 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Model 10 Logic 2 Service 4

The steps in the order they run, from what starts it.

- 1 **Weekly/Monthly Schedule** Schedule trigger *Starts it*
- 2 **Categorization Output Parser** Output Parser Structured *Model*
- 3 **Anomaly Detection Output Parser** Output Parser Structured *Model*
- 4 **Correction Output Parser** Output Parser Structured *Model*
- 5 **Anthropic Model - Categorization** Lm Chat Anthropic *Model*
- 6 **Anthropic Model - Anomaly Detection** Lm Chat Anthropic *Model*
- 7 **Anthropic Model - Correction** Lm Chat Anthropic *Model*
- 8 **MCP Client Tool** Mcp Client Tool *Model*
- 9 **Workflow Configuration** Set *Logic*
- 10 **Tax Categorization Agent** Agent *Model*
- 11 **Anomaly Detection Agent** Agent *Model*
- 12 **Correction Agent** Agent *Model*
- 13 **Fetch Revenue Data** N8n *Service*
- 14 **Sync to Accounting Software** Http Request *Service*
- 15 **Format Compliance Summary** Set *Logic*
- 16 **Send Summary to Tax Agent** Gmail *Service*
- 17 **Send WhatsApp Alert** Whats App *Service*

## How it's built

- **Starts on:** A clock
- **Steps:** 17
- **Size:** Medium: a working afternoon
- **Connects to:** Gmail, WhatsApp
- **Model:** Claude

## Questions

What does it need to run?

An n8n account, plus your own Gmail and WhatsApp accounts, and a key for Claude. You connect your own accounts after importing it; none are included.

What starts it?

It starts on a clock.

Does it use AI?

Yes. It calls Claude. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 17 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 17 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fmonitor-revenue-tax-compliance-and-auto-correct-anomalies)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Gmail](https://millionrounds.com/workflows?service=Gmail#library)[WhatsApp](https://millionrounds.com/workflows?service=WhatsApp#library)

## Workflows like it

Also money admin, with the same services where possible, closest in size first.

- [**Auto-extract & approve invoices with OpenAI and Jotform** 17 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/auto-extract-and-approve-invoices-with-openai-and-jotform)
- [**Automate tax compliance validation with OpenAI** 17 steps · calls a model · Gmail](https://millionrounds.com/workflow/automate-tax-compliance-validation-with-openai)
- [**Automated invoice data extraction with LlamaParse and Gemini** 17 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/automated-invoice-data-extraction-with-llamaparse-and-gemini)
- [**Automatic email invoice archiving & data extraction with Gmail** 17 steps · calls a model · FTP, Gmail](https://millionrounds.com/workflow/automatic-email-invoice-archiving-and-data-extraction-with-g)
- [**Check supplier invoices from Gmail with OpenAI** 17 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/check-supplier-invoices-from-gmail-with-openai)
- [**Escalate payment issues with Azure OpenAI and Google Sheets** 17 steps · calls a model · Gmail, Google Sheets](https://millionrounds.com/workflow/escalate-payment-issues-with-azure-openai-and-google-sheets)