Dear DrByte,
Thank you for your reply. Yes I am frustrated. I have gone through the forum posts for the last few weeks. Most of the questions regarding taxes by counties (or some other geopolitical area) have gone unanswered. The answeres I did see clearly did not address nor solve the problem. I guess my frustration is merely an echo of what I am reading.
There is a good module called "Local Sales Tax Module" written by LadyHLG. It allows you to collect by what she calls "suburb" which is actually the second address line in the customer record. The problem is, as has been well documented by users, that there is no way to tell the clients to enter their county name in "Address Line 2". Besides, it should only apply for clients who live in your state if you do not collect tax from other states. I have seen requests from her users to have her modify the customer form so that there is a drop-down "County" field that could be used, but she stated that she does not know how to do this.
The frustration so prevalent regarding taxes could be easily dismissed if it was not such a huge problem. Many have said that they use Zen Cart successfully, including tax collection, and I am very happy for them. However, I have also read many posts from users who employ the zip code method even though they know that it is not "perfect". I just hope they never get audited.
I do not know how to reprogram the customer data entry form to add another pull-down field for "Taxing authority". If someone could implement it, then I am sure that LadyHLG could use that field with her module and solve the problem.
Is there anyone out there capable of taking on this task? It seems to me that this is possibly the last hurdle towards making Zen Cart a truly universal open-source shopping cart. I have much programming experience myself, but have no clue where to even begin to look for the necessary "hooks".
I also looked into TaxCloud and other services, but they all have other problems.
Thank you for your time.
Robert