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https://issues.apache.org/jira/browse/OFBIZ-225?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jacques Le Roux updated OFBIZ-225:
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Attachment: OFBIZ-225.patch
I have merged the patch with trunk rev. 606126.
There is currently a problem when you use it without tax on promotions : you don't find the same total tax amount with and without the patch. I will look at it closerly tomorrow.
> Discussion about the interaction between order total promotions and sales taxes
> -------------------------------------------------------------------------------
>
> Key: OFBIZ-225
> URL:
https://issues.apache.org/jira/browse/OFBIZ-225> Project: OFBiz
> Issue Type: Wish
> Components: order
> Reporter: Jacopo Cappellato
> Assignee: Jacques Le Roux
> Priority: Minor
> Attachments: OFBIZ-225.patch, OFBIZ-225.patch
>
>
> Bug is sales tax adj when there is a promotion applied to the order total.
> I've set up a promotion, 10% applied to the order total, and a sales tax, 20%.
> When I create the order, a sales tax adjustment is attached to every order item without considering the promotion (20%) that is applied to the order total.
> For an example, see the attached picture: the order item subtotal is $500, the sales tax adj (20%) is $100 (!), even if there is a promotion for the order total (50$).
> All Comments Work Log Change History Sort Order: [navigator.ascending.order]
> Comment by David E. Jones [09/Aug/05 10:34 AM]
> [ Permlink ]
> This is an interesting issue, and has been around for a while.
> The main problem is that sales tax is calculated per-item and not per-order, so the adjustments go on each item. For order discounts the only way I can think of to handle them is to pro-rate the discount over each order item based on that item's value relative to the total value of the order. I guess that's not being done now...
> Anyone have any other ideas?
> -David
> Comment by Jacopo Cappellato [09/Aug/05 01:02 PM]
> [ Permlink ]
> My proposal: we could leave everything as is now and at the end we could add a new negative sales tax adjustment to compensate the total sales tax amount.
> Does it make sense?
> Comment by Si Chen [09/Aug/05 01:16 PM]
> [ Permlink ]
> This is not necessarily a bug. Some stores don't give you a promotion on the pre-tax amount. One "solution" is to change the promotion's description to say it is a discount on the after-tax amount.
> If we want to add a discount on the "pre-tax" amount, I think David's suggestion is right. Maybe we should calculate the order item adjustments, all the promotions, order totals. Then calculate the total tax on the order. Then use the order item's value / order total to pro-rate the tax against each item.
> The reason we don't want to add a separate item is if someone returns one of the items, it'll be very hard to track down the effect of returning an item if the adjustments and taxes aren't kept together.
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