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

# Billing Runs

> Use Billing Runs in the Midaz Console to preview volume and maintenance fees for a daily, weekly, or monthly period before any charges are posted to accounts.

A **Billing Run** previews the fees for a given period, based on your configured packages. It does not charge anything — it only calculates a preview. Use it to check amounts, reconcile expected revenue, and review the results before you apply any charge.

<Note>
  Enable the Fees Engine in [Midaz module settings](/en/platform/console/plugin-settings) before you use this page.
</Note>

## Key concepts

***

* **Preview, not a charge** — A Billing Run shows an extract of what it *would* bill for the selected period. It posts nothing until you act on the result.
* **Period type** — The length of the period: **daily**, **weekly**, or **monthly**. With a reference date, it sets the date range that the run evaluates.
* **Reference date** — The date that sets the period range. A monthly run covers the full month, a weekly run the ISO week, a daily run that day. You can also choose a **custom range**.
* **Package type** — Which packages the run includes:
  * **Volume** — fees on the number of transactions.
  * **Maintenance** — a fixed fee per account.
  * **All** — both Volume and Maintenance packages.
* **Scope to specific packages** — Limit the run to selected packages instead of every package of the chosen type.
* **Extract** — The result of the run. It has a summary and one preview line per package. The summary shows the total results, the Volume and Maintenance totals, and a net total.

## Accessing Billing Runs

***

<Steps>
  <Step title="Open the Fees Engine">
    In the Midaz Module sidebar, expand **Fees Engine**.
  </Step>

  <Step title="Select Billing Runs">
    Choose **Billing Runs** to open the run page.
  </Step>

  <Step title="Set the run parameters">
    Pick the **period type** and **reference date**, or a custom range. Choose the **package type**. To narrow the run, select specific packages.
  </Step>

  <Step title="Calculate the preview">
    Run the calculation to see the extract. Review the summary and the per-package results. If the period has no fees to bill, the preview shows an empty state.
  </Step>
</Steps>

## Where to go next

***

<Columns cols={2}>
  <Card title="Managing Fee Packages" icon="box" horizontal href="/en/midaz/fees/console/managing-fee-packages">
    Create, edit, and delete the packages that Billing Runs evaluate.
  </Card>

  <Card title="Fees Engine overview" icon="gauge" horizontal href="/en/midaz/fees/console/fees-engine-overview">
    Understand how the Fees Engine, packages, and rules fit together.
  </Card>
</Columns>