Summary When using a Shopify discount function with fixedAmount, the discount amount loses precision when the presentment currency differs from the shop’s base currency. Shopify appears to convert the discount to base currency, round/floor it, then convert back — causing the applied discount to diff…

Hi all, apologies for the delay. This issue has now been resolved. Can you confirm whether you are still encountering any issues?

Hi @dostu , thanks for reaching out about this! I have a few questions before I start digging into this: Is this issue happening with normal discounts as well or just discounts based on Functions? Are you seeing this across multiple shops or some? What does the currency settings look like for the …

Thanks for the quick reply! For normal discounts it’s only allowed to set up the discount in base currency, so it doesn’t affect them. [Screenshot 2026-02-03 at 12.02.51] Yes, this seems to be the default behaviour for all stores now. No rounding is set up on Market level. [Screenshot …

Thanks for sharing! I’ll look into whether there has been any changes on our end recently and get back to you.

[image] Paige-Shopify: I’ll look into whether there has been any changes on our end recently and get back to you. I would be really grateful if you could nudge someone to look at @dostu ’s original post: Inconsistent Cents Rounding on Discounts Across Different Stores - #2 by bkspace It’s bee…

@Paige-Shopify any updates on this please? :folded_hands:

Hi @dostu , apologies for the delay. We needed to spend some time investigating this issue and are currently working on a fix. Your detailed report was incredibly helpful, thank you! I’ll provide an update here once the fix has been deployed.

@Paige-Shopify just checking in. Do you have a timeline for the fix?

@dostu Not at this time, it’s still being worked on.

Hey all! I’m looking in to this and the fix here should be in place. Let us know if you’re still seeing this behaviour though.

Thanks team! Will keep an eye on any new complaints :crossed_fingers:

Discount Function: fixedAmount loses precision with multi-currency conversion

Functions

dostu March 15, 2026, 2:32pm 12

@KyleG-Shopify we started to see another issue in the last few days with multicurrency, I wonder if it might be related to this fix?

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Discount Function: fixedAmount loses precision with multi-currency conversion

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