> ## 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 Initial Purchase ROAS: Return on Subscription Ads

> Track return on ad spend for subscription initial purchases in your Shopify store. Measure revenue efficiency of subscription acquisition campaigns.

<Tip>
  Revenue generated from subscription initial purchase orders per dollar spent on advertising.
</Tip>

## Formula

<Info>
  **Subscription Initial Purchase ROAS** = [**Subscription Initial Purchase Revenue**](/reference/metrics/orders/revenue/subscription-initial-purchase-revenue) ÷ **Spend**
</Info>

### Formula Components

| Metric                                                                                                               | Definition                                                             |
| -------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------- |
| [**Subscription Initial Purchase Revenue**](/reference/metrics/orders/revenue/subscription-initial-purchase-revenue) | Total revenue from subscription initial purchase orders                |
| **Spend**                                                                                                            | Total advertising spend for the selected period and attribution window |

| Metadata        |                                                              |
| --------------- | ------------------------------------------------------------ |
| **Type**        | Multiplier                                                   |
| **Data Source** | [Upstack Pixel](/pixel), [Shopify](/sources/catalog/shopify) |
| **Aggregation** | Ratio                                                        |

***

## Example

Subscription ROAS performance across advertising channels:

| Channel | Sub. Initial Revenue | Ad Spend | ROAS |
| ------- | -------------------- | -------- | ---- |
| Meta    | \$18,500             | \$5,000  | 3.7x |
| Google  | \$12,800             | \$3,200  | 4.0x |
| TikTok  | \$8,400              | \$2,500  | 3.4x |

***

## How It Works

Subscription Initial Purchase ROAS measures the revenue return specifically from orders that start subscriptions. A 3x ROAS means you earn \$3 in subscription initial purchase revenue for every \$1 spent on ads. Since subscribers typically have higher LTV, even lower initial ROAS may be profitable. Data syncs from your Shopify subscription orders.

***

## When to Use

| Scenario                          | Action                                                     |
| --------------------------------- | ---------------------------------------------------------- |
| Optimizing subscription campaigns | Allocate budget to highest subscription ROAS channels      |
| Comparing to standard ROAS        | See if subscription-focused ads perform differently        |
| Forecasting subscriber value      | Initial ROAS × expected retention = projected total return |
| Setting efficiency targets        | Establish minimum subscription ROAS for profitability      |

***

## Related Metrics

| Metric                                                                                                           | Relationship                      |
| ---------------------------------------------------------------------------------------------------------------- | --------------------------------- |
| [Subscription Initial Purchase CPA](/reference/metrics/orders/performance/subscription-initial-purchase-cpa)     | Cost efficiency for same audience |
| [Subscription Initial Purchase Revenue](/reference/metrics/orders/revenue/subscription-initial-purchase-revenue) | Numerator of this calculation     |
| [ROAS](/reference/metrics/orders/performance/roas)                                                               | Overall return on ad spend        |
| [New Customer ROAS](/reference/metrics/orders/performance/new-customer-roas)                                     | ROAS for all new customers        |

[See all Performance metrics →](/reference/metrics/orders/performance)