One-Time Charge Feature for Add-On Prices
We’re excited to introduce a long-awaited feature requested by many merchants: One-Time Charge for Add-On Prices 🎉
This feature allows you to charge the add-on price only once, regardless of how many quantities of the main product are added to the cart. Even if customers increase the quantity of the main product, the add-on price will remain fixed at 1 unit in the cart.
Who Is This Feature For?
The One-Time Charge feature is especially useful if you offer:
- Gift boxes
- Gift messages
- Service fees or setup fees
👉 Example:
If a customer buys 3 items but selects a gift box add-on, the gift box fee will be charged only once, not 3 times.
How to Set Up One-Time Charge for Add-On Prices
Step 1: Create an Option Set
- Go to the Option set page.
- Click Create option set.
- Choose your option type:
- Single input
- Single selection
- Multiple selections
📘 Learn more about creating option sets here: https://help.qikify.com/en/article/set-up-option-set-1jzli88/
Step 2: Enable One-Time Charge
- In the option set editor, locate the One-Time Charge setting.
- Enable the One-Time Charge checkbox.
⚠️ Important note:
This feature does not work with:
- Quantity selector on option values
- Add charge price
Step 3: Apply the Option Set to Products
- Click Select products.
- Choose the products you want to apply this option set to.
- Click Apply and Create to activate the option set.
📘 Learn more about publishing option sets here:
Step 4: Test on the Storefront
After enabling One-Time Charge, we highly recommend testing the setup:
Place a test order with:
- Multiple quantities of the main product
- The add-on option enabled
Check the Cart page:
- You will see the add-on price applied only once
Proceed to Checkout to confirm the final pricing
📘 Learn how to create a Shopify test order here:
https://help.shopify.com/en/manual/checkout-settings/test-orders
Additional Notes
The One-Time Charge for Add-On Prices feature currently does not support:
- Quantity on option values
- Add charge price
These limitations are expected and working as designed at the moment.
We hope this guide helps you fully take advantage of the One-Time Charge for Add-On Prices feature to create a smoother and more flexible pricing experience for your customers 💛
Updated on: 03/02/2026
Thank you!