# AI expense receipt processor with Google Drive: n8n workflow

> Started by an event in a connected app, and works across Google Drive, Google Sheets and Slack.

Source: https://millionrounds.com/workflow/ai-expense-receipt-processor-with-google-drive (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)

# AI expense receipt processor with Google Drive

Started by an event in a connected app, and works across Google Drive, Google Sheets and Slack. 8 steps, 1 branch: small enough to read in one sitting and change without fear.

Small

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fai-expense-receipt-processor-with-google-drive)

**8 steps** Small: readable in one sitting

**1** Branch: places the flow splits

**0** Loops or waits

**3** Services it connects to

## The flow

Starts it 1 Logic 2 Service 5

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

- 1 **Google Drive Trigger** Google Drive trigger *Starts it*
- 2 **Download receipt** Google Drive *Service*
- 3 **PDF Vector - Extract Expense** Pdf Vector *Service*
- 4 **Process & categorize** Code *Logic*
- 5 **Log expense** Google Sheets *Service*
- 6 **Over $500?** If *Logic*
- 7 **Request approval** Slack *Service*
- 8 **Confirm logged** Slack *Service*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 8, with 1 branch
- **Size:** Small: readable in one sitting
- **Connects to:** Google Drive, Google Sheets, Slack
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Google Drive, Google Sheets and Slack accounts. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an event in a connected app.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Not long. At 8 steps it can be read in one sitting and changed without fear.

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 8 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%2Fai-expense-receipt-processor-with-google-drive)
- **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.

[Google Drive](https://millionrounds.com/workflows?service=Google+Drive#library)[Google Sheets](https://millionrounds.com/workflows?service=Google+Sheets#library)[Slack](https://millionrounds.com/workflows?service=Slack#library)

## Workflows like it

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

- [**Automate PDF invoice generation & delivery with Google Drive** 8 steps · Email, Google Drive](https://millionrounds.com/workflow/automate-pdf-invoice-generation-and-delivery-with-google-dri)
- [**Automate client invoicing & payments with Stripe** 8 steps · Gmail, Google Drive](https://millionrounds.com/workflow/automate-client-invoicing-and-payments-with-stripe)
- [**Automate payroll processing with OpenAI and Google Sheets** 8 steps · Email, Google Sheets](https://millionrounds.com/workflow/automate-payroll-processing-with-openai-and-google-sheets)
- [**CRM to professional PDF Proposals with Gmail and Drive** 8 steps · Gmail, Google Drive](https://millionrounds.com/workflow/crm-to-professional-pdf-proposals-with-gmail-and-drive)
- [**Deliver encrypted payroll PDFs with Google Drive and Sheets** 8 steps · Gmail, Google Drive](https://millionrounds.com/workflow/deliver-encrypted-payroll-pdfs-with-google-drive-and-sheets)
- [**Extract invoice data from Gmail to Google Sheets** 8 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/extract-invoice-data-from-gmail-to-google-sheets)