Wrong Total when Price including-Tax when Cart has active coupon

[zexperto]

Preconditions and environment

• Magento version: 2.4.7-p4
• Fresh Magento: no customization

Steps to reproduce

in Fresh Magento

1. Create Tax Zone and Rate (Switzerland with 8.1%)
2. Create new Rule for this Rate
3. set the default Country in Store->Configuration->Tax: default country - Switzerland
4. Store->Configuration->Tax: Tax Class for Shipping: Taxable goods
5. Store->Configuration->Tax: Catalog Prices: Including Tax
6. Store->Configuration->Tax: Shipping Prices: Including Tax
7. Store->Configuration->Tax: Enable Cross Border Trade
8. Create a Cart discount with 10%
9. Create Flat Rate shipping cost with 9.9
10. Create new simple Item with SKU: simple, name = Simple
11. Set the Price = 13.50
12. Tax Class = Taxable Goods
13. add the product to the cart then make the QTY = 6
14. you will see that the total of the cart is wrong

Subtotal CHF74.93
Discount (Valentin25) -CHF7.49
Shipping (Flat Rate - Fixed) CHF9.16
Tax CHF6.25
Order Total CHF83.41

I have attached here all needed screenshot

Expected result

the Expected total should be
74.93 - 7.49 = 67.44 + (the tax for 67.44 which is around 5.46) + 9.9
Order Total CHF82.80

Actual result

Order Total CHF83.41

Additional information

No response

Release note

Tax Zone and Rate

Tax Rate

Sales->Tax Configuration

Coupon

Simple Item:

Cart

Triage and priority

• 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”.

[m2-assistant]

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[m2-assistant]

Hi @engcom-Bravo. Thank you for working on this issue.
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[engcom-Bravo]

Hi @zexperto,

Thanks for your reporting and collaboration.

We have tried to reproduce the issue in Latest 2.4-develop instance and we are able to reproduce the issue.Kindly refer the screenshots.

Order Total CHF83.41.

Hence Confirming the issue.

Thanks.

[github-jira-sync-bot]

✅ Jira issue https://jira.corp.adobe.com/browse/AC-14291 is successfully created for this GitHub issue.

[m2-assistant]

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

[zexperto]

@engcom-Bravo not sure if it is possible but I believe this issue need to have a high priority as it affect the customer business, what do you think?

[jorgb90]

@zexperto
@engcom-Bravo

Same issue here! Very frustrating and this should be fixed quickly!

The setting "Apply Discount On Prices" isn't working. Doesn't matter if you select Including or Excluding Tax.

We also got a shop which prices are entered including tax, but we need to discount to be applied on the excluding price and then calculate tax, but it keeps doing the discount on the including tax price.