How to automate invoicing with n8n
Invoicing is one of the processes that takes the most time while adding nothing: copying order data into the invoice, sending it, checking who has paid and reminding those who have not. All of it can be automated.
n8n is an automation tool that connects your apps through workflows. This is what a typical invoicing workflow looks like.
Step 1: what triggers the invoice
The workflow starts with an event: a payment confirmed in your gateway (for example Stripe), an order completed in your store or a service marked as done in your CRM.
Step 2: create the invoice in your system
n8n collects the customer and order data and creates the invoice in your ERP or invoicing software (Holded, Odoo or another) through its API, with the right numbering and taxes.
It matters that the invoice is issued from a system that complies with your country's invoicing rules, such as VeriFactu in Spain or DIAN e-invoicing in Colombia.
Step 3: send and record it
The workflow emails the invoice to the customer and records it in the CRM, so the sales team sees where each customer stands.
Step 4: payment reminders
For unpaid invoices, a scheduled workflow checks daily which are overdue and acts:
- ✓A friendly first reminder a few days after the due date.
- ✓A firmer second reminder if it is still unpaid.
- ✓An alert to someone on the team for manual follow-up.
Step 5: reconciliation and cost
When the payment arrives (from the gateway or the bank), the workflow marks the invoice as paid and stops the reminders.
The cost depends on how many systems must be connected and on your rules. We need the detail to assess it, but as a reference automating one process with n8n starts from €390 (plus VAT where applicable).
Questions about how to automate invoicing with n8n
Usually not. n8n connects to the one you already use if it has an API. If it does not, we look for alternatives.
Yes, if the workflow logs each step and flags errors. Invoices are still issued by your invoicing system, not by n8n.
n8n can be self-hosted with no licence cost (you pay for the server) or used in its cloud version on a subscription.
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