> ## Documentation Index
> Fetch the complete documentation index at: https://datum-4926dda5-docs-api-reference-demo.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Billing

> Billing on Datum Cloud — billing accounts, the projects bound to them, and the payment methods that fund service consumption.

Datum Cloud manages billing through the `billing.miloapis.com` API. A **billing account** is the entity within an organization responsible for paying for service consumption; you bind projects to it so their usage rolls up to a single payer, and you attach payment methods that fund the account. Billing accounts and payment methods are created with `datumctl apply -f` and inspected with `datumctl get` and `datumctl describe`.

<Warning>
  The Billing API is **alpha** (`v1alpha1`). Fields and behavior may change in backward-incompatible ways between releases.
</Warning>

## Resources

<CardGroup cols={2}>
  <Card title="BillingAccount" icon="file-invoice-dollar" href="/api/billing/billingaccount">
    A billing entity within an organization that is responsible for paying for service consumption.
  </Card>

  <Card title="BillingAccountBinding" icon="link" href="/api/billing/billingaccountbinding">
    Links a project to a billing account, establishing billing responsibility for the project's resource consumption.
  </Card>

  <Card title="PaymentMethod" icon="credit-card" href="/api/billing/paymentmethod">
    Associates a payment instrument with a billing account to fund it.
  </Card>
</CardGroup>

<Tip>
  Inspect the exact fields for any resource with `datumctl explain`, for example `datumctl explain billingaccounts.spec` or `datumctl explain paymentmethods.spec`.
</Tip>

## Learn more

* [API resources overview](/api/overview) — the resource reference landing page across all Datum Cloud services.
* [Changing resources](/datumctl/resources/changing) — how to apply, edit, and safely preview changes to these resources.