Tax module in Magento

Tax module is one of coremodules in Magento and it includes Block, Helper, Model, ect andsql file structures.The table schema is in the sql directory andtable<wbr>tax_class,tax_calculation_rate,tax_calculation_rule and tax_calculation are created for thismodule.</wbr>

Table tax_class: define the class name andclass type;

Tabletax_calculation_rate:definethe taxrate and location relationship;

Table tax_calculation: define the relationship betweentax rule, tax rate and tax class.

There are three files in the ect directory:config.xml, system.xml and adminhtml.xml.

config.xml isused fortax module's configuration;

system.xml isused toconfigure the values byadministratorinterface;

adminhtml.xmlis used tocreate menu in the admindashboard and callcorresponding<wbr></wbr>actions.