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

# Billing

> Upgrade, change or cancel your plan, update payment details and download invoices.

Manage your paid plan. An account admin can go to **Settings > Billing > Manage subscription** in Calcs.com to open the Stripe customer portal, where you can change your plan, payment details and invoices.

<CardGroup cols={3}>
  <Card title="Upgrade Your Plan" icon="book" href="/docs/plans/billing/upgrade-your-plan">
    How to move to a higher Calcs.com plan to unlock more calculators and features.
  </Card>

  <Card title="Change Your Users or Billing Period" icon="book" href="/docs/plans/billing/change-users-billing-period">
    Add or remove users, or switch between annual and monthly billing.
  </Card>

  <Card title="Change Your Credit Card Details" icon="book" href="/docs/plans/billing/change-credit-card-details">
    Update your card number, expiry date, billing email and billing address.
  </Card>

  <Card title="View Your Billing History and Past Invoices" icon="book" href="/docs/plans/billing/view-billing-history-invoices">
    See past transactions and download invoices as PDFs from the Stripe customer portal.
  </Card>

  <Card title="Cancel Your Plan" icon="book" href="/docs/plans/billing/cancel-your-plan">
    How to cancel your paid plan, what happens to your access, and how to re-activate.
  </Card>
</CardGroup>