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

# Invoices

> Create invoices, collect payments, and manage retainers

Run client billing from your workspace with reusable settings, invoice delivery, payment tracking, and retainers.

<Note>
  Invoices is a built-in Kato workspace app. Stripe and QuickBooks are separate, optional connections for payments and accounting.
</Note>

## Enable the app

1. Enable Invoices for the workspace.
2. Open Invoices from the sidebar.
3. Optionally connect Stripe or QuickBooks for payments and accounting.

## Use it in Kato

Enable Invoices for the workspace, then open Invoices from the sidebar. Connect Stripe or QuickBooks when you want hosted payments or accounting sync.

## Check your setup

Open Invoices and prepare a draft. Review billing settings, amounts, and recipients before sending an invoice.

If the app is missing from the sidebar, ask a workspace owner or admin to check that it is enabled for your workspace.

## Related guides

* [All integrations](/integrations/overview)
* [Connect Stripe](/integrations/stripe)
* [Connect QuickBooks](/integrations/quickbooks)
* [Get help](/documentation/contact-support)


## Related topics

- [Webhook event reference](/api-reference/webhooks/events.md)
- [Stripe](/integrations/stripe.md)
- [Integrations](/integrations/overview.md)
- [Billing and plans](/documentation/billing-and-plans.md)
- [QuickBooks](/integrations/quickbooks.md)