Question

Is it possible that the same good may be included in GDP in some transactions, but excluded in others? For example, is milk bought by households and milk bought by Haagen Dazs treated the same?

Answer 1

Yes, it is possible.

When a good is final product of the transaction like in case of milk bought by households, it would be a part of GDP. But when the same good is intermediate good of a transaction like hagen daiz buys milk to produce icecream and sell it, it would not be a part of GDP. GDP only contains value of those goods, which are final products of the transactions. Same good can be a final good for one and intermediate good for the other transactions.