UK Vat change from 17.5 to 15% - How will this affect your code?

Question

The UK VAT system is changing from 17.5% to 15%. What strategies have you used in your code to store the VAT, and how will the change affect your applications. Do you store

Answer 1

I found a table in the code last night that stored important configuration settings for the application.

Table tbl_config
   config_id int
   config_name varchar(255)
   config_value varchar(255)

One of these settings was our main admin username and password combination for the server (unhashed). I guess the dev who created it always wanted access to it in case he forgot! Needless to say, it's disappeared now.