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

# Upgrade and Downgrade Plans

> Upgrades apply immediately with proration and downgrades wait for renewal, whether customers change plans in the portal or you do it in the dashboard.

Customers change plans through the [Customer Portal](https://commet.co/docs/customer-portal.md) or from the dashboard. Commet handles proration, feature transitions, and billing adjustments automatically.

## Plan change behavior

| Change | Behavior | Example |
| - | - | - |
| **Upgrade** | Applied immediately with prorated billing | Starter ($29) → Pro ($99) |
| **Downgrade** | Takes effect at next renewal | Pro ($99) → Starter ($29) |
| **Interval change (up)** | Applied immediately | Monthly → Yearly |
| **Interval change (down)** | Takes effect at next renewal | Yearly → Monthly |

Both plans must be in the same [Plan Group](https://commet.co/docs/plan-groups.md) for customers to change plans themselves through the portal. Free-to-paid changes require a new checkout — the customer is redirected to complete payment.

An immediate upgrade is rejected with a seat-limit error when the customer's current seats exceed the target plan's included seats for a seat feature that is not unlimited and has overage disabled. Reduce seats first, or pick a plan with enough included seats. Interval-only changes and scheduled downgrades are not affected.

If you need to expand features or limits temporarily without changing the subscription's plan, price, or billing cycle, use a [Plan Grant](https://commet.co/docs/plan-grants.md) instead.

## Dashboard

From a customer's subscription detail page, click **Change Plan** and select the new plan. The same upgrade/downgrade rules apply.

## Learn more

* [What Happens When a Customer Changes Plans](https://commet.co/docs/what-happens-when-a-customer-changes-plans.md)
* [How Is Proration Calculated](https://commet.co/docs/how-is-proration-calculated-when-changing-plans.md)


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