> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.trueprofit.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Set up Custom Cost for TikTok Shops

Custom Costs is a feature for you to add more costs to TrueProfit manually. As a seller on Shopify, there might be many different kinds of costs that incur in your store, for example Shopify subscription, KOL/influencers, or even Ad Agencies costs. Basically, any costs that don’t fall into other existing categories in TrueProfit can be created and customized in the Custom Costs feature.

![](https://storage.crisp.chat/users/helpdesk/website/61f3f962f1727800/image_qrnx1j.png)

### In this article:
* [How to set up Fixed Costs](#2-how-to-set-up-fixed-costs)
* [How to set up Variable Costs](#2-how-to-set-up-metric-based-costs)

# Fixed Costs vs. Variable Costs

* **Fixed Costs **: Fixed amount, can be set as recurring, or one-time expenses
* **Variable Costs**: Expenses that use formulas based on a metric for your store (i.e. costs depending on monthly revenue)

# How to add Fixed Costs

**Step 1:** When you click on Custom Costs, you are redirected to the Fixed Costs page
**Step 2:** Click **Add cost** to add a new fixed custom cost

![](https://storage.crisp.chat/users/helpdesk/website/61f3f962f1727800/image_1w4jycs.png)
**Step 3:** In the popup modal, enter the cost name and amount of money
**Step 4:** Choose a frequency to calculate this cost: **Monthly**, **Weekly**, **Daily**, or **One-time**. Your total cost amount will be divided evenly within the date range you selected.
**Step 5:** Select the Start and End dates. If the cost doesn't have an ending date, choose **This is an ongoing cost**
**Step 6:** Click **Add** to save your new Fixed Cost

![](https://storage.crisp.chat/users/helpdesk/website/61f3f962f1727800/image_12t2l1m.png)
The new fixed cost will be saved and added to your total costs calculation.

# How to set up Variable Costs

**Step 1:** Go to **Cost Settings** > **Custom Cost** > click on **Variable Costs**

![](https://storage.crisp.chat/users/helpdesk/website/61f3f962f1727800/image_u978ut.png)
**Step 2:** Click **Add cost** to add a new Variable Costs
**Step 3:** In the popup modal, enter the cost name
**Step 4:** In the **Amount** section, choose a metric then **enter the percentage** to deduct from your selected metric
*For example, if you outsource your TikTok Ad Campaign to an agency, and they charge you 10 percent of TikTok Ad Spend. Then in the drop down menu, select % TikTok Ad Spend and enter the value "10" into the text box.*

![](https://storage.crisp.chat/users/helpdesk/website/61f3f962f1727800/image_1a73b1m.png)
**Step 5:** Select the Start and End dates. If the cost doesn't have an ending date, choose **This is an ongoing cost**
**Step 6:** Click **Add** to save your new Variable Cost

The new Variable Cost will be added to your total costs.

If you need help in setting up Custom Costs for your shop, don't hesitate to contact our support team for help!