Custom Tax rule is not wokring

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I created a tax rule called “Output Tax” I then added CST tax (all states in India other than West Benal) at 5% to this rule. I also added VAT (Only for west bengal state) at 5% to this rule.

 

All products have “Output” set as the tax Rule on the prices tag. Dependent on customers’ location either 20%, 5% or no tax is charged.

 

But the problem is that, when I selected tax rule as "Output-tax", the "Pre tax retail price" and "Retail price with tax" remain same.

 

Like, if my pretax retail price is Rs. 100/- and I choose Output tax as tax rule then my retail price with tax should be 105/-. But it remains same.

 

Any help will be appreciated. Thanks in advance.