The first thing you need to do is open the “transaction-result_functions.php” file from the wp-e-commerce plugin. Then search for “$product_list_html.= $row['quantity'].” -  “. $product_data['name'].stripslashes($variation_list ).”  “. $message_price .”\n\r”;”

Then add this code right after that -

$region = $purchase_log['billing_region'];
$region_results = mysql_query("SELECT * FROM `wp_wpsc_region_tax` WHERE `id` = $region ");

while($r=mysql_fetch_array($region_results))
{
$tax_rate = $r['tax'];
}
$product_id[] = $product_data['id'];
$tax_percent = $tax_rate * .01;
$message_price_clean = str_replace("$","",$message_price);
$tax_sub_total = $message_price_clean * $tax_percent;
$tax_total[] = $tax_sub_total;

Then find this line – $product_list_html.= “Your Purchase No.: “.$purchase_log['id'].”\n\n\r”; and add this

$tax_total = array_sum($tax_total);
$tax_total = round($tax_total, 2);
$product_list_html.= "Tax: $" .$tax_total ."\n\r";
$product_list.= "Tax: $" .$tax_total ."\n\r";

This will add a tax line to both the email receipt and the transaction details screen, after a customer has a made a purchase. If it’s from a region where sales doesn’t apply, the tax will be zero.

By no means is this a complete list of all the plugins that everyone uses everytime, but it’s what I personally use for all of my installs.

I’ve compiled a zip file that contains the following plugins (in no particular order):

• All in One SEO Pack – Optimizes your WordPress site for search engines by automatically optimizing your titles and meta tags.
• WP Database Backup – Allows you to automatically schedule backups of your WordPress database. Download or send the backup to your email.
• Sitemap Generator – Quickly creates a human-readable sitemap for your WordPress site.
• Contact Form 7 – Let’s you quickly create contact forms for your WordPress site. Supports multiple contact forms and customize the form and content flexibly with simple markup. Supports AJAX submission and validation, CAPTCHA and Akismet spam filtering.
• My Page Order – Allows you to order your pages and subpages through the use of a drag and drop interface. Also supports a widget that uses all the page order options.
• Google Sitemap Generator – This plugin generates XML sitemaps that help search engines index your site with greater efficiency.

Download my Must Have WordPress plugins. My zip file includes a readme.txt file that has a link to each plugin homepage for install instructions, screen grabs and FAQs. Please feel free to contact me for any additional suggestions!

Download Must Have WordPress Plugins Zip