Connect to the Dept. of Revenue API to automatically calculate Washington State Destination Based Tax. This only applies to Shops operating in Wa state.
Legend: 
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Report
-- Changed some text in the instructions to clear them up a little more. --No code changes
-- Added a php file to run the sql file without php admin see step 24 --no core changes to code
-- added added error code descriptions and a link to DOR in error alert email.
-- thanks to snarg - fixed the tax error email from returning incorrect code and all the time
-- added error codes to tax error email
included a missing function for admin report.
complete package+update guide
the report will enter the location code from earlier orders into the database
2.2b - the report now grabs missing location codes from DOR
improved the report in admin. Now totals zones are totaled and reports are generated by month&year
improved the report in admin. Now totals zones are totaled and reports are generated by month&year
The admin report code is in beta and far from complete but is posted here for further development and it adds the code to collect AND keep the wa location code.
08/11/08
added the location code result to database so it can be called up at anytime later on.
08/08/08
added a step to set wa tax zone in admin #18
added simple report for tax/zone in admin
full package+update
-- added code to not calculate WA tax for non taxable items-thanks to svegliando
-- moved the require for the tax function up in application top to improve compatibility.
***IMPORTANT***
CHANGE the following 9.0000 TO 0.0900
in catalog/includes/functions/wa_taxes.php
***FIND:
//uncomment the next line if you need to charge WA tax, but don't have an overall store tax rate
//return $wa_dest_tax_rate[rate]=9.0000*100;
***UNCOMMENT THE SECOND LINE editing the tax rate (9.0000) if needed.
corrected an bug in error reporting and added optional overall wa tax rate option in parse_dor function
Just made a few edits on the readme_install.txt file and on the first line of the catalog/includes/functions/wa_taxes.php file to reflect the file name and version. All credits go to lildog for this great contribution.
Full package
Fixed session variable that was not retaining retrieved tax rate. Reset session when a customer creates an account
Full Package+update guide.
Added basic error reporting and a session variable
Full Package+update guide
-moved function to it's own function file in preparation to add some sort of tracking of wrongly applied tax rates and reduce the number of times a shop calls to WA DOR site. My pages call an average of ten times per page.
- made PWA compatibility use the newer address variable(the older versions were pwa pre1.xx compatible only)
The v. 2.1.3 of July 15 (removed) does not contain anything, the upload failed use this version. Forgot to include some code changes to files in v2.1.2. See update guide.
Full Package
minor update fixes a query bug and adds PWA compatibility.
added the call to parse_DOR in general.php in instructions
minor update to install instructions. deleted reference to wa_dest_tax.php
All new version, connects to DOR's online database.
- fixed a file name
- v1.5 added ability to split state file into chunks for those with allowed_memory restrictions.
- fixed sql queries
- fixed download bug
Added 2 new ways to get the file to your server, depending on what (if any) restrictions your server has on your account. You can use the admin form to upload, you can manually FTP it to your server or you can direct download to your server.
Full Package
Still Beta
improved uploading for pre php 5. Still beta.
Full Package
Still in beta. Users without php 5 can now load tax rates in admin. Fixed major bugs and ommisions from 1.1.
Updated....still not for production servers yet.
Full Package.
http://forums.oscommerce.com/index.php?showtopic=292985
minor update to install docs, more comments, etc. Added step to fix admin box menu display. Still not for production....
Install doc only not full package
This hack is in the development and testing phase. It is being provided here for people to test.
Do NOT install this on a production site. If you site is currently working and properly accepting orders, do not install this module!!!
Washington state destination-based sales tax rate by address locator and admin DB updater.
The admin portion allows the store owner to upload address and rate databases supplied by the Washington State Department of Revenue for use in determining the sales tax rate from given street address and zip code.
Not really a module but more of a hack.
Add file to this package