# Manage Custom Domain usage

## What you are charged for

You can configure a [custom domain](/docs/guides/platform/custom-domains) for a project by enabling the [Custom Domain add-on](/dashboard/project/_/settings/addons?panel=customDomain). You are charged for all custom domains configured across your projects.

Note: Custom Domains are **not** covered by the [Spend Cap](/docs/guides/platform/cost-control#spend-cap).

## How charges are calculated

Custom domains are charged by the hour, meaning you are charged for the exact number of hours that a custom domain is active. If a custom domain is active for part of an hour, you are still charged for the full hour.

### Example

Your billing cycle runs from January 1 to January 31. On January 10 at 4:30 PM, you activate a custom domain for your project. At the end of the billing cycle you are billed for 512 hours.

| Time Window                                 | Custom Domain Activated | Hours Billed | Description         |
| ------------------------------------------- | ----------------------- | ------------ | ------------------- |
| January 1, 00:00 AM - January 10, 4:00 PM   | No                      | 0            |                     |
| January 10, 04:00 PM - January 10, 4:30 PM  | No                      | 0            |                     |
| January 10, 04:30 PM - January 10, 5:00 PM  | Yes                     | 1            | full hour is billed |
| January 10, 05:00 PM - January 31, 23:59 PM | Yes                     | 511          |                     |

### Usage on your invoice

Usage is shown as "Custom Domain Hours" on your invoice.

## Pricing

$0.0137 per hour ($10 per month).

## Billing examples

### One project

The project has a custom domain activated throughout the entire billing cycle.

| Line Item                     | Hours | Costs   |
| ----------------------------- | ----- | ------- |
| Pro Plan                      | -     | $25     |
| Compute Hours Small Project 1 | 730   | $15     |
| Custom Domain Hours           | 730   | $10     |
| **Subtotal**                  |       | **$50** |
| Compute Credits               |       | -$10    |
| **Total**                     |       | **$40** |

### Multiple projects

All projects have a custom domain activated throughout the entire billing cycle.

| Line Item                     | Hours | Costs   |
| ----------------------------- | ----- | ------- |
| Pro Plan                      | -     | $25     |
|                               |       |         |
| Compute Hours Small Project 1 | 730   | $15     |
| Custom Domain Hours Project 1 | 730   | $10     |
|                               |       |         |
| Compute Hours Small Project 2 | 730   | $15     |
| Custom Domain Hours Project 2 | 730   | $10     |
|                               |       |         |
| **Subtotal**                  |       | **$75** |
| Compute Credits               |       | -$10    |
| **Total**                     |       | **$65** |

### Add-on disabled after a day

Project add-ons are billed in arrears based on how many hours you used them.
If you remove the custom domain add-on, you are no longer billed from the time of removal onward.

| Line Item                     | Hours | Costs      |
| ----------------------------- | ----- | ---------- |
| Pro Plan                      | -     | $25        |
|                               |       |            |
| Compute Hours Small Project 1 | 730   | $15        |
| Custom Domain Hours Project 1 | 24    | $0.33      |
|                               |       |            |
| **Subtotal**                  |       | **$40.33** |
| Compute Credits               |       | -$10       |
| **Total**                     |       | **$30.33** |

## Optimize usage

- Regularly check your projects and remove custom domains that are no longer needed
- Use free [Vanity subdomains](/docs/guides/platform/custom-domains#vanity-subdomains) where applicable