# Invoice processing workflow with Google Drive: n8n workflow

> Started by an event in a connected app, and works across Google Drive and Google Sheets. 9 steps: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/invoice-processing-workflow-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)

# Invoice processing workflow with Google Drive

Started by an event in a connected app, and works across Google Drive and Google Sheets. 9 steps: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Finvoice-processing-workflow-with-google-drive)

**9 steps** Medium: a working afternoon

**0** Branches: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 2 Logic 2 Service 5

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

- 1 **When clicking ‘Test workflow’** Manual trigger *Starts it*
- 2 **On new file in Google Drive** Google Drive trigger *Starts it*
- 3 **Load files from Google Drive folder** Google Drive *Service*
- 4 **Get already processed rows from Sheets** Google Sheets *Service*
- 5 **Filter processed files** Merge *Logic*
- 6 **Download file for OCR** Google Drive *Service*
- 7 **OCR recognize** Http Request *Service*
- 8 **Unserialize response JSON** Code *Logic*
- 9 **Save OCR result into Sheets** Google Sheets *Service*

## How it's built

- **Starts on:** An event in a connected app
- **Steps:** 9
- **Size:** Medium: a working afternoon
- **Connects to:** Google Drive, Google Sheets
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Google Drive and Google Sheets 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?

Plan an afternoon. 9 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 9 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%2Finvoice-processing-workflow-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)

## Workflows like it

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

- [**Automate cancellation feedback collection with Stripe** 9 steps · Email, Google Sheets](https://millionrounds.com/workflow/automate-cancellation-feedback-collection-with-stripe)
- [**Automate medical billing with Google Sheets and Gmail** 9 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/automate-medical-billing-with-google-sheets-and-gmail)
- [**Create Stripe invoices from Airtable orders with Google Sheets** 9 steps · Airtable, Google Sheets](https://millionrounds.com/workflow/create-stripe-invoices-from-airtable-orders-with-google-shee)
- [**Detect duplicate invoice PDFs from Gmail with Google Sheets** 9 steps · Gmail, Google Sheets](https://millionrounds.com/workflow/detect-duplicate-invoice-pdfs-from-gmail-with-google-sheets)
- [**Extract batch invoice data from form uploads** 9 steps · Google Sheets](https://millionrounds.com/workflow/extract-batch-invoice-data-from-form-uploads)
- [**Extract invoice data from Google Drive PDFs with Mistral** 9 steps · Google Drive, Google Sheets](https://millionrounds.com/workflow/extract-invoice-data-from-google-drive-pdfs-with-mistral)