Changing wording of 'custom discount' on checkout page

Store Design

Topic summary

A merchant using the B2B app SparkLayer needs to change the “custom discount” label on the checkout page, which appears in Dutch (“Aangepaste korting”) regardless of the site’s language settings (English/German).

Core Issue:

  • SparkLayer applies line-item discounts for quantity pricing that Shopify displays as “custom discount” at checkout
  • The label doesn’t translate properly across the store’s three languages
  • Standard theme content editing hasn’t resolved the problem

Attempted Solutions:

  • Editing theme content strings (unsuccessful)
  • Checking Admin discount settings (not applicable since discount isn’t manually created)
  • Contacting SparkLayer support (they indicated it’s controlled by Shopify’s content)
  • Reaching out to multiple support teams (no success)

Current Status:
The issue remains unresolved. The original poster has accepted the limitation after exhausting support options. Another user expressed interest in the same solution. A late suggestion recommends navigating to: Online Store > Themes > Edit default theme content > Checkout & system > Checkout order summary > Custom discount, though it’s unclear if this differs from previous attempts or will successfully address the translation issue.

Summarized with AI on October 29. AI used: claude-sonnet-4-5-20250929.
1

Hi there,

Is there any way to change the wording of the label “custom discount” on the checkout page?
This isn’t a discount that i generate myself with a coupon code or something like that.
I’m using the b2b app SparkLayer with has a quantity pricing functionality. SparkLayer essentially applies a “line item discount” behind the scenes. When this arrives into Shopify, it is then treated as a standard discount when viewing an order.

This discount shows up as "custom discount’ on the checkout page. Well, actually it shows up as “aangepaste korting” because the main language of my shop is dutch. I run 2 other languages on the site (German and English), but on each language the checkout page shows the dutch term.

So, 2 questions:

  1. How can i change the wording of the label “Aangepaste korting (custom discount)”?

  2. How can i add translations for this term?

I’ve already tried editing the theme content. It doesn’t work, or it’s not the right string.

Thanks,
Karin

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2

Hi @lamiseto ,

You can change title of discoun.

  1. Go go Admin → discount → Aangepaste korting

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  1. Update " Aangepaste korting " to your text

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3

Thanks for your reply!

The discount is not being generated by a discount code i’ve created myself, so it’s not in the discount list at the place you mention.
The discount is generated by the b2b app SparkLayer with has a quantity pricing functionality. SparkLayer essentially applies a “line item discount” behind the scenes. When this arrives into Shopify, it is then treated as a standard discount when viewing an order.

Thanks though!

4

Hi,

I think you should contact this app to they guide you update. All apps will have the document to guide. Hope you can resolve this issue.

5

Hi there,

Yes, i’ve already reached to them but they say they can’t change it, because it’s Shopify’s content…

Thanks for your help!

6

Hi Lamiseto,

I’m from SparkLayer and would like to say this is possible via changing the theme language strings for the checkout. If you search for “custom discount” in the Theme content editor this affects it.

Thanks

7

Hi there!
Thanks for your reply :slightly_smiling_face:
I’ve already tried editing the theme content but it doesn’t work unfortunately.
You guys have access to my shop if you want to give it a try yourself!

Kind regards,
Karin

8

Hi there @lamiseto ,

Just checking if you already have a solution for this? Wanting to do the same to change the ‘Custom Discount’ label.

Kind Regards,

Riz

9

Hi Riz,

No unfortunately it seems impossible to change this ??‍ :female_sign:
I’ve reached out to so many support teams, none of them were able to help me, so i’ve just accepted it :disappointed_face:

If you ever do find a solution, i would love to know!

Kind regards,
Karin

10

You could try going to the Theme Content (Online Store > Themes > Select “…” of the theme you want to edit > Edit default theme content > Checkout & system > Checkout order summary > Custom discount)

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