? tax_billing_state.patch
Index: tax.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/ecommerce/tax/tax.module,v
retrieving revision 1.16.2.3
diff -u -F^f -r1.16.2.3 tax.module
--- tax.module	8 Jun 2006 01:27:39 -0000	1.16.2.3
+++ tax.module	16 Aug 2006 17:59:13 -0000
@@ -49,7 +49,6 @@ function tax_checkoutapi(&$txn, $op, $ar
       $box['subject'] = t('Tax');
       $billing = $txn->address['billing'];
       $rules = tax_get_rules();
-      $states = store_build_states();
       $total_tax = 0;
       $taxable_amount = 0;
 
@@ -76,12 +75,11 @@ function tax_checkoutapi(&$txn, $op, $ar
             }
             break;
           case 'state':
-            if ($billing->state) {
-              if ($states[$billing->state] == $rule->realm_value && tax_rule_product_match($txn, $rule)) {
-                if ($tax = tax_calculate($taxable_amount, $rule->operand, $rule->operator)) {
-                  $total_tax += $tax;
-                }
-              }
+            if (isset($billing->state) &&
+                $billing->state == $rule->realm_value &&
+                tax_rule_product_match($txn, $rule) &&
+                $tax = tax_calculate($taxable_amount, $rule->operand, $rule->operator)) {
+              $total_tax += $tax;
             }
             break;
         }