[ic] Taxable item with non-taxable options

[Mike Heins]

Quoting Eric Chamberlain (eric at voxilla.com):
> I'm new to Interchange.  Can someone explain how to have a taxable item
> with non-taxable options?
> 
> We have hardware that we would like to sell with support and extended
> warranty options.

You would need to write a tax calculation routine which would traverse
the shopping cart and recognize the non-taxable options. 

Probably the smartest thing to do would be make the options be sub-items,
ie not options but separate line items grouped with the main item, and
then set them to be non-taxable via the multi/vat taxing setup that allows
taxability by category. I say this not just because of implementation
issues, but because it would be hard to trace and explain why an item's
tax is not corresponding to the taxing percentage * sale price.

-- 
Mike Heins
Perusion -- Expert Interchange Consulting    http://www.perusion.com/
phone +1.765.647.1295  tollfree 800-949-1889 <mike at perusion.com>

I am convinced that life is 10% what happens to me and 90%
how I react to it. And so it is for you... we are in charge
of our attitudes. -- Charles Swindoll