> ## 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 %: Percentage of Subscription Orders

> Measure what percentage of your orders are subscription initial purchases. Track subscription acquisition trends and forecast recurring revenue.

<Tip>
  The percentage of total orders that are subscription initial purchases.
</Tip>

## Formula

<Info>
  **Subscription Initial Purchase %** = ( [**Subscription Initial Purchase Orders**](/reference/metrics/orders/counts/subscription-initial-purchase-orders) ÷ [**Orders**](/reference/metrics/orders/counts/orders) ) × 100
</Info>

### Formula Components

| Metric                                                                                                            | Definition                                        |
| ----------------------------------------------------------------------------------------------------------------- | ------------------------------------------------- |
| [**Subscription Initial Purchase Orders**](/reference/metrics/orders/counts/subscription-initial-purchase-orders) | Orders where a customer starts a new subscription |
| [**Orders**](/reference/metrics/orders/counts/orders)                                                             | Total orders in the selected period               |

| Metadata        |                             |
| --------------- | --------------------------- |
| **Type**        | Percentage                  |
| **Data Source** | [Shopify](/sources/shopify) |
| **Aggregation** | Ratio                       |

***

## Example

Your store received **2,450 orders** in March, with **367 subscription initial purchases** — a rate of **14.98%**:

| Period   | Orders | Initial Subs | Rate   |
| -------- | ------ | ------------ | ------ |
| Week 1–2 | 1,180  | 165          | 13.98% |
| Week 3–4 | 1,270  | 202          | 15.91% |

***

## How It Works

Subscription initial purchases are identified by matching a `subscription_initial_purchase` event with the same order ID. This excludes recurring renewals and one-time purchases.

***

## When to Use

| Scenario                     | Action                                             |
| ---------------------------- | -------------------------------------------------- |
| Tracking subscription growth | Monitor rate changes week-over-week                |
| Evaluating campaigns         | Compare rates across subscriber-targeted campaigns |
| Forecasting LTV              | Higher rates indicate more recurring revenue       |

***

## Related Metrics

| Metric                                                                                                        | Relationship                              |
| ------------------------------------------------------------------------------------------------------------- | ----------------------------------------- |
| [Subscription Initial Purchase Orders](/reference/metrics/orders/counts/subscription-initial-purchase-orders) | Numerator: count of initial subscriptions |
| [Orders](/reference/metrics/orders/counts/orders)                                                             | Denominator: total order count            |
| [Total Revenue](/reference/metrics/orders/revenue/total-revenue)                                              | Revenue context for subscription mix      |

[See all Order Counts metrics →](/reference/metrics/orders/counts)