In a way GST will also pave way for higher tax sharing between centre and states and shall strengthen federalism - income tax sharing is the next in line. And slowly India shall become a union of states as it should have been.
In a way GST will also pave way for higher tax sharing between centre and states and shall strengthen federalism - income tax sharing is the next in line. And slowly India shall become a union of states as it should have been.
If the Centre collected all the revenues, the states would be entirely dependent on the Centre. Sure, 42% of the revenue needs to be shared with the states, but the proportion is at the Centre's discretion. I would expect that the party in power at the Centre would funnel funds towards states which are electorally important (UP, Maharashtra) and away from ones that don't play much of a role in national politics (TN, North Eastern states). That's great if you live in UP, not so much if you're Tamil. In such a situation, I foresee that it could actually fuel resentment in states from where wealth is taken and cause the Union to weaken. We see this happening in Catalonia in Spain, for example.
I agree with everything else that you said, that there will be short term contraction but this simplified tax code will be helpful for businesses in the long run. Simplifying it even further and making it a central tax only would be a boon for businesses, but possibly not for the Union.