Ability to set default tax rate on income accounts Merged

I had a customer yesterday who expressed that for her invoicing needs it would be much easier if she could default a tax rate calculation by customer, so that when she does a receivable charge to ABC, each income line defaults to add gst (or whatever they choce to be the default).

The customer expressed frustration because she was trying to enter a long invoice and felt it was redudant and time consuming to have select a tax option for each row.