&lt;p&gt;The Sales Tax (added) Manager section allows you to tax any order based on a defined set of&amp;nbsp;variables. The available variables are drawn from the registration form fields. Tax will be applied (if the user&#039;s registration details match the defined variables) to the order total after any discounts have been applied but before any shipping charges are added.&lt;/p&gt;
&lt;p&gt;You need to enable the &lt;strong&gt;Use Sales Tax (added) Method&lt;/strong&gt; in the Tax Configuration page in order for this function to work.&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;If you don&#039;t see any values in the first drop down list (&lt;strong&gt;firstname&lt;/strong&gt;), please see the Registration Form section to configure the form.&lt;/li&gt;
&lt;li&gt;Select the value in the first drop down list.&lt;/li&gt;
&lt;li&gt;Select the value in the second drop down list (operand).&lt;/li&gt;
&lt;li&gt;Enter the value that would be matched to the customer&#039;s entered value. The system will only work correctly if the value is an exact match. We recommend that you should use a drop down type for this form field, so that customers are only able to select the value that you have entered here, instead of entering their data into a field.&lt;/li&gt;
&lt;li&gt;Enter the percentage value.&lt;/li&gt;
&lt;li&gt;Click &lt;strong&gt;Add,&lt;/strong&gt; to add the new Tax criteria.&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;e.g. Assuming that you want to charge the customers who are in the State of Illinois (IL) 8.5%, all other states 5% and outside of the United States 0% then do the following. We assume you have the &lt;strong&gt;State&lt;/strong&gt; and &lt;strong&gt;Country&lt;/strong&gt; fields setup in the Registration Form section.&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Creating IL State Tax&lt;/strong&gt;&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;Select the &lt;strong&gt;State&lt;/strong&gt; in the first drop down list.&lt;/li&gt;
&lt;li&gt;Select &lt;strong&gt;Equal&lt;/strong&gt; in the second drop down list.&lt;/li&gt;
&lt;li&gt;Enter the &lt;strong&gt;IL&lt;/strong&gt; to the third text box field. We assume that the &lt;strong&gt;IL&lt;/strong&gt; is in the &lt;strong&gt;State&lt;/strong&gt; drop down list that you initially entered when creating the registration form.&lt;/li&gt;
&lt;li&gt;Enter 8.5 to the &lt;strong&gt;Then Charge&lt;/strong&gt; field.&lt;/li&gt;
&lt;li&gt;Click the &lt;strong&gt;Add&lt;/strong&gt; button.&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;&lt;strong&gt;Creating Other State&#039;s Tax&lt;/strong&gt;&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;Select the &lt;strong&gt;State&lt;/strong&gt; in the first drop down list.&lt;/li&gt;
&lt;li&gt;Select &lt;strong&gt;Not Equal&lt;/strong&gt; in the second drop down list.&lt;/li&gt;
&lt;li&gt;Enter the &lt;strong&gt;IL&lt;/strong&gt; in the third field text box.&lt;/li&gt;
&lt;li&gt;Enter 5 to the &lt;strong&gt;Then Charge&lt;/strong&gt; field.&lt;/li&gt;
&lt;li&gt;Click the &lt;strong&gt;Add&lt;/strong&gt; button.&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;&lt;strong&gt;Creating Other Countries Tax (Outside US)&lt;/strong&gt;&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;Select Country in the first drop down list (We assume that you have the country drop down field in the registration form).&lt;/li&gt;
&lt;li&gt;Select &lt;strong&gt;Not Equal&lt;/strong&gt; in the second drop down list.&lt;/li&gt;
&lt;li&gt;Enter USA in the third field text box (We assume that the USA value is in the Country drop down list that you initially entered when creating the registration form).&lt;/li&gt;
&lt;li&gt;Enter 0 to the &lt;strong&gt;Then Charge&lt;/strong&gt; field.&lt;/li&gt;
&lt;li&gt;Click the &lt;strong&gt;Add&lt;/strong&gt; button.&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;The above configuration will charge any customers who&#039;s State is IL 8.5%, all other states 5% and 0% for any customers who&#039;s country is outside of the United States.&lt;/p&gt;
&lt;p&gt;&amp;nbsp;&lt;/p&gt;