> ## 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.

# Complete Payment: Track Payment Completion Events

> Track complete payment events captured by the Upstack Pixel. Count successful payment completions to measure checkout funnel performance and revenue attribution.

<Tip>
  Complete Payment counts the total number of payment completion events tracked by the Upstack Pixel on your site.
</Tip>

## Formula

<Info>
  **Complete Payment** = **COUNT** ( Complete Payment Events )
</Info>

### Formula Components

| Metric                      | Definition                                                                                   |
| --------------------------- | -------------------------------------------------------------------------------------------- |
| **Complete Payment Events** | Each complete payment event tracked when a visitor successfully finishes the payment process |

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

***

## Example

Your store tracked **3,847 complete payments** across attribution channels in January.

| Channel    | Complete Payments | % of Total |
| ---------- | ----------------- | ---------- |
| Meta Ads   | 1,654             | 43.0%      |
| Google Ads | 1,039             | 27.0%      |
| Organic    | 731               | 19.0%      |
| Direct     | 423               | 11.0%      |
| **Total**  | **3,847**         | **100%**   |

***

## How It Works

Complete Payment counts every payment completion event tracked by the Upstack Pixel. When a visitor successfully completes the payment step in your checkout flow—confirming their payment method and finalizing the transaction—the pixel fires a complete payment event. This metric captures the moment a customer commits to their purchase, providing accurate attribution data for conversion tracking and funnel analysis.

***

## When to Use

| Scenario                      | Action                                                      |
| ----------------------------- | ----------------------------------------------------------- |
| Measuring checkout completion | Track successful payment completions across channels        |
| Analyzing checkout funnel     | Compare complete payments to checkout initiations           |
| Evaluating payment flow       | Identify drop-off between payment initiation and completion |
| Attribution analysis          | Attribute completed transactions to marketing channels      |

***

## Related Metrics

| Metric                                                                       | Relationship                                 |
| ---------------------------------------------------------------------------- | -------------------------------------------- |
| [Purchases](/reference/metrics/funnel/conversions/purchases)                 | Final transaction confirmation after payment |
| [Initiate Checkout](/reference/metrics/funnel/engagement/initiate-checkouts) | Upstream step in the checkout funnel         |
| [Add Payment Info](/reference/metrics/funnel/conversions/add-payment-info)   | Payment details entry before completion      |

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