> ## 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.

# TikTok Cost per Add to Wishlist: Wishlist Efficiency Metric

> Track your TikTok cost per wishlist addition to measure how efficiently your ads capture future purchase intent. Lower costs signal stronger wishlist appeal.

<Tip>
  Average spend per wishlist add from your TikTok ads—measures how efficiently your campaigns drive future purchase intent.
</Tip>

## Formula

<Info>
  **TikTok Cost per Add to Wishlist** = **TikTok Ad Spend** ÷ **TikTok Add to Wishlists**
</Info>

### Formula Components

| Metric                                                                                                          | Definition                                                 |
| --------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------- |
| [**TikTok Ad Spend**](/reference/metrics/advertising/tiktok/tiktok-spend/tiktok-spend)                          | Total amount spent on your TikTok ads                      |
| [**TikTok Add to Wishlists**](/reference/metrics/advertising/tiktok/tiktok-conversions/tiktok-add-to-wishlists) | Number of wishlist additions attributed to your TikTok ads |

| Metadata        |                               |
| --------------- | ----------------------------- |
| **Type**        | Currency                      |
| **Data Source** | [TikTok Ads](/sources/tiktok) |
| **Aggregation** | Ratio                         |

***

## Example

Your TikTok holiday campaign spent **\$1,800** and drove **4,500 wishlist additions**.

| Campaign           | Spend       | Wishlists | Cost/Wishlist |
| ------------------ | ----------- | --------- | ------------- |
| Holiday Gift Guide | \$1,200     | 3,200     | \$0.38        |
| New Arrivals       | \$600       | 1,300     | \$0.46        |
| **Total**          | **\$1,800** | **4,500** | **\$0.40**    |

***

## How It Works

TikTok tracks wishlist events through its Pixel or Events API. Upstack calculates cost per wishlist by dividing your total TikTok ad spend by the number of attributed wishlist additions during the selected period.

***

## When to Use

| Scenario                    | Action                                                             |
| --------------------------- | ------------------------------------------------------------------ |
| Measuring intent efficiency | Compare cost/wishlist across campaigns to find best performers     |
| Seasonal planning           | Track wishlist efficiency before major shopping events             |
| Creative testing            | Lower cost/wishlist signals more desirable product presentation    |
| Budget allocation           | Shift spend toward campaigns with lower wishlist acquisition costs |

***

## Related Metrics

| Metric                                                                                                           | Relationship                                          |
| ---------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------- |
| [TikTok Add to Wishlists](/reference/metrics/advertising/tiktok/tiktok-conversions/tiktok-add-to-wishlists)      | The denominator—total wishlist events                 |
| [TikTok Cost per Add to Cart](/reference/metrics/advertising/tiktok/tiktok-conversions/tiktok-add-to-carts-cost) | Next funnel stage—cost per cart addition              |
| [TikTok CPA](/reference/metrics/advertising/tiktok/tiktok-efficiency/tiktok-cpa)                                 | Cost per purchase—measures full conversion efficiency |

[See all TikTok Conversions metrics →](/reference/metrics/advertising/tiktok/tiktok-conversions)