Credit memo tax error - off by 1 cent

[Sean820729]

Preconditions and environment

• Magento version: 2.4.6-p1
• Tax calculation settings
• Cart price rule

Steps to reproduce

1. Create a sales order with discount

2. Create 1st credit memo with 1 Qty

3. Create 2nd credit memo with 1 Qty

4. Create 3rd credit memo with 1 Qty

Expected result

The tax amount of the credit memo should be the same.

• 1st: $19.00
• 2nd: $19.00
• 3rd: $19.00

Actual result

• 1st: $19.00
• 2nd: $19.01
• 3rd: $18.99

Additional information

No response

Release note

No response

Triage and priority

• [X] Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• [ ] Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• [ ] Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• [ ] Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• [ ] Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

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[m2-assistant[bot]]

Hi @engcom-Dash. Thank you for working on this issue. In order to make sure that issue has enough information and ready for development, please read and check the following instruction: :point_down:

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).
• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue.
• 3. Add Area: XXXXX label to the ticket, indicating the functional areas it may be related to.
• 4. Verify that the issue is reproducible on 2.4-develop branch
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     - If the issue is reproducible on 2.4-develop branch, please, add the label Reproduced on 2.4.x.
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[engcom-Dash]

Hi @Sean820729

Thanks for reporting and collaboration.

Verified the issue in magento 2.4 dev instance and the issue is reproducible.

We are seeing tax error off by 1cent in the credit memos.

Please refer the attached video recording.

https://github.com/magento/magento2/assets/60198592/17099bfb-6094-4f8f-a87d-747e7bc848bf

[github-jira-sync-bot]

:white_check_mark: Jira issue https://jira.corp.adobe.com/browse/AC-10946 is successfully created for this GitHub issue.

[m2-assistant[bot]]

:white_check_mark: Confirmed by @engcom-Dash. Thank you for verifying the issue.
Issue Available: @engcom-Dash, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.