> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stigg.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

<Note>
  Invoicing Integration is currently in **Private Beta**. Contact your Stigg account team to enable it for your environment.
</Note>

Stigg's Invoicing Integration enables self-serve checkout flows with built-in invoice generation and payment collection. Customers select a plan, complete checkout, and Stigg automatically provisions their subscription and generates an invoice.

## PLG flow: checkout with invoicing

Customers select a plan, enter payment details, and Stigg provisions their subscription automatically. An invoice is generated and the payment is processed.

```mermaid theme={null}
flowchart TD
    A[Customer selects plan] --> B[Checkout - Stigg widget]
    B --> C[Payment - Airwallex or Stripe]
    C --> D[Invoice generated + Subscription provisioned]
```

## Airwallex payment support

Airwallex is a Payment Service Provider (PSP) that Stigg integrates with directly. It is the recommended payment method for teams with cross-border or international revenue because it:

* Supports local payment methods across 150+ countries
* Reduces FX conversion costs compared to USD-only billing
* Authors invoices and collects payment in the customer's preferred currency

Airwallex is available for the PLG checkout flow and as a payment method on SLG contracts.

## Setting up

In the [Stigg app](https://app.stigg.io), go to **Settings > Integrations > Apps**.

1. Select the **Invoicing** category
2. Select a third-party payment integration — **Airwallex** or **Stripe**
3. Complete the setup for that provider

Multiple integrations are supported. You can connect both Airwallex and Stripe simultaneously.

## Capability matrix

| Capability                     | PLG                  |
| ------------------------------ | -------------------- |
| Invoice preview                | ✅                    |
| Invoice PDF generation         | Via billing provider |
| Invoice payment link           | Via billing provider |
| Automated dunning              | Via billing provider |
| Immediate payment collection   | ✅                    |
| Financial reporting (ARR, MRR) | Via billing provider |
| Revenue recognition            | Via billing provider |