How is new cost basis determined on a stock that spins off a new stock & get cost basis for that new stock?

Answer 1

Dashel is right. If you want the easiest way, start with the company web site and go to investor relations. They almost always have details of the spin off that you can view and print.

Answer 2

You need to contact the Investor Relations of that particular organization - they will determine what the cost basis is for all shares involved in a merger and/or spin off.