# Automatic invoice due date reminders: n8n workflow template

> Started by a clock, and works across Google Calendar. 8 steps, 2 branches: small enough to read in one sitting and change without fear.

Source: https://millionrounds.com/workflow/automatic-invoice-due-date-reminders (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)

# Automatic invoice due date reminders

Started by a clock, and works across Google Calendar. 8 steps, 2 branches: small enough to read in one sitting and change without fear.

Small

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fautomatic-invoice-due-date-reminders)

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

**2** Branches: places the flow splits

**0** Loops or waits

**1** Service it connects to

## The flow

Starts it 1 Logic 4 Service 3

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

- 1 **Schedule Trigger** Schedule trigger *Starts it*
- 2 **Get Stripe Invoices** Http Request *Service*
- 3 **Split Invoices** Item Lists *Logic*
- 4 **Filter Due Invoices** If *Logic*
- 5 **Google Calendar Get Events** Google Calendar *Service*
- 6 **Check Invoice Exists** Set *Logic*
- 7 **IF Not Exists** If *Logic*
- 8 **Google Calendar Create Event** Google Calendar *Service*

## How it's built

- **Starts on:** A clock
- **Steps:** 8, with 2 branches
- **Size:** Small: readable in one sitting
- **Connects to:** Google Calendar
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Google Calendar account. You connect your own accounts after importing it; none are included.

What starts it?

It starts on a clock.

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%2Fautomatic-invoice-due-date-reminders)
- **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 Calendar](https://millionrounds.com/workflows?service=Google+Calendar#library)

## Workflows like it

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

- [**Generate daily business digest with Notion and Gmail** 6 steps · calls a model · Gmail, Google Calendar](https://millionrounds.com/workflow/generate-daily-business-digest-with-notion-and-gmail)
- [**Send a monthly summary of days off to payroll** 13 steps · Email, Google Calendar](https://millionrounds.com/workflow/send-a-monthly-summary-of-days-off-to-payroll)
- [**Send Stripe invoice reminders with Google Sheets and Slack** 13 steps · calls a model · Email, Google Calendar](https://millionrounds.com/workflow/send-stripe-invoice-reminders-with-google-sheets-and-slack)
- [**Automate Xero invoices and payments with PostgreSQL** 14 steps · Google Calendar, Postgres](https://millionrounds.com/workflow/automate-xero-invoices-and-payments-with-postgresql)
- [**Send payment check due-date reminders with Google Calendar** 16 steps · Google Calendar, Telegram](https://millionrounds.com/workflow/send-payment-check-due-date-reminders-with-google-calendar)
- [**Review and approve employee expenses with OpenAI** 16 steps · calls a model · Gmail, Google Calendar](https://millionrounds.com/workflow/review-and-approve-employee-expenses-with-openai)