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

# invoice.start

<Tip>
  Make sure to read the [Webhooks Overview](/api-reference/webhooks/overview) for important information about signature verification.
</Tip>

## Purpose

The `invoice.start` webhook is triggered when an **Invoice** has been calculated and is ready to receive payments.

## Payload format

Your configured endpoint will receive an [Invoice](/api-reference/webhooks/invoice/payload) payload.


## Related topics

- [Your email notifications](/settings/notifications/your-email-notifications.md)
- [Getting Started](/quickstart-guide/getting-started.md)
- [Search invoices](/api-reference/invoices/search-invoices.md)


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