Posted by
Jacopo Cappellato on
URL: http://ofbiz.116.s1.nabble.com/OFBiz-Users-Ofbiz-use-in-the-UK-tp135221p135231.html
Hi all,
there are some situations (specific markets, countries, rules etc... see
the attached messages from this list) in which tax calculation can be
very complex.
In order to provide a flexible/extensible/customizable mechanism for tax
calculation and in the same time to keep things as simple as possible,
what about implementing all tax rules as services that implement the
same service interface?
The specific service to be used for tax calculation could be directly
linked to the product (for example adding a new field to the Product
entity); if you need to implement a new tax rule, you just have to
create a new service that implements the tax service interface and
attach it to the product.
In this way we could quickly collect a good library of tax calculation
algorithms (i.e. services) ready to be used.
This is obviously only a draft of design... I'd love to get your
feedback about it.
Jacopo
David E. Jones wrote:
>
>> I was just trying to point out how hellishly complicated VAT
>> classification, calculation and invoicing can get in the UK and
>> undoubtedly in other countries, too.
>>
>> For instance, I have just come another ludicrous rule from Customs &
>> Revenue: packaged animal feed incurs standard VAT if it is less than
>> 12.5 kg, otherwise zero VAT.
>>
>> There are specific rules for rounding (on which digit, when up, when
>> down); invoices need to detail VAT codes for every item, etc, etc
>>
>> I don't know OFBiz well enough yet to make an informed comment where
>> and how these tax issues are handled. I am just presuming that each
>> country will need its specific VAT implementation.
>
>
>
> Right now the tax calculation in OFBiz is fairly simple. Certain things
> can be accommodated, but there isn't a full-featured tax calculation
> piece in OFBiz. It is getting better over time, but like you say tax
> rules can get really funky... We have done integrations with TaxWare
> and the like in the past, but these are quite expensive and technically
> a pain to deal with too....
>
> If you're interested in helping with or sponsoring any of this, that
> would be great... We actually do have some funding for various tax
> extensions right now, so some stuff will be going in soon.
>
> -David
>
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