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

# Subscription Created Cost: Ad Spend per New Subscription

> Calculate advertising cost per new subscription. Optimize your subscription acquisition efficiency.

<Tip>
  Subscription Created Cost measures how much you spend on advertising for each new subscription.
</Tip>

## Formula

<Info>
  **Subscription Created Cost** = **Ad Spend** ÷ **Subscription Created**
</Info>

### Formula Components

| Metric                                                                                 | Definition                                         |
| -------------------------------------------------------------------------------------- | -------------------------------------------------- |
| [**Ad Spend**](/reference/metrics/advertising/blended/blended-spend)                   | Total advertising cost from connected ad platforms |
| [**Subscription Created**](/reference/metrics/funnel/conversions/subscription-created) | Count of new subscriptions                         |

| Metadata        |                         |
| --------------- | ----------------------- |
| **Type**        | Currency                |
| **Data Source** | [Upstack Pixel](/pixel) |
| **Aggregation** | Ratio                   |

***

## Example

You spent **\$10,000** on advertising in January and drove **283 new subscriptions**.

| Metric                    | Value    | Notes                     |
| ------------------------- | -------- | ------------------------- |
| Ad Spend                  | \$10,000 | Monthly advertising cost  |
| Subscription Created      | 283      | New subscriptions         |
| Subscription Created Cost | \$35.34  | Cost per new subscription |

***

## How It Works

This metric divides your total ad spend by the number of new subscriptions to calculate your cost per subscription acquisition. This is a key metric for understanding the economics of subscriber growth.

***

## When to Use

| Scenario           | Action                                       |
| ------------------ | -------------------------------------------- |
| CAC benchmarking   | Track cost to acquire recurring customers    |
| Channel comparison | Identify most efficient subscription sources |
| Budget allocation  | Shift spend to lowest-cost channels          |
| Unit economics     | Factor into LTV/CAC calculations             |

***

## Related Metrics

| Metric                                                                                         | Relationship                        |
| ---------------------------------------------------------------------------------------------- | ----------------------------------- |
| [Subscription Created](/reference/metrics/funnel/conversions/subscription-created)             | The denominator in this calculation |
| [Subscription Created Value](/reference/metrics/funnel/conversions/subscription-created-value) | Revenue from new subscriptions      |
| [Trial Converted Cost](/reference/metrics/funnel/conversions/trial-converted-cost)             | Cost for trial-originated subs      |

[See all Conversions metrics →](/reference/metrics/funnel/conversions)