Not getting subtotal in custom sales quote address total abstract model

Question

I have override Mage_Sales_Model_Quote_Address_Total_Abstract with my custom model to add and display custom additional fee to user but i am not getting the subtotal value in it.

I have used $address->getSubTotal() and it is returning zero.

Help me to get subtotal.

Thanks

Answer 1

Subtotal is calculated right before grand total. This means if your total is caluclated before the subtotal, there is no subtotal to get.

Answer 2

Subtotal can be found using:

$subtotal = $address -> getTotalAmount('subtotal');

It worked for me.