I want to enable reduced taxes because in my country (Greece) for some cities/towns we have reduced taxes.
In Taxes - Reduced Rates I add a row where I only enter the country's code, a postal code for a specific city with the reduced tax and the tax rate.
I was thinking that if the customer types his postal code in his address the system would understand that the reduced tax must be enabled but not. The system always applies the standard tax.
Maybe you could point me what I am doing wrong.