doubt on miscelleneous taxes

Hi Experts,

I have setup taxes like freight,packing charges etc. in structures .

But my doubt is where these charges values are stored that is in which table also wat are the accounts i should create in g/L

"Charges on Purchase " can be the account name and it should be part of the purchase group in COA. If you are loading the value on inventory these accounts will not be used while posting and the amount will be added in the account defined as purchase account.