Charcoal-Vat

Good Afternoon to all,

We are in hotel business, we purchasing the Charcoal from one of our vendor. He is registered the Vat. He is charging 5% Vat on the charcoal.

But as per my knowledge charcoal exempted from tax in karnataka,,, but he registered in Karnataka Govt.

So my question is Charcoal exempted from Tax but he registered in Govt. How is it possible..

Awaiting for your valuable replies....