In order for manufacturing to kick start, taxes need to drop. 30% is huge and no manufacturer will come to India, unless of course they can offset it by paying the plebs next to nothing.
Heck, even trump has reduced corporate taxes. Governments are always the most inefficient allocators of capital. Best to reduce taxes and let private business decide.
Secondly income tax in India is too high. Tax free up to 2.5 lacs?? What a joke. That is the deposit for an average house in Bangalore. Contrast that with the tax free amount in the UK which is about 10x the average deposit of a flat in London. And the UK is considered a high tax country- when you compare it to the likes of US or even France (single bread earners can use the tax free amount of a non working spouse). As with corporate taxes, best to give money to people and give them incentives to spend or save in government funds that can be used for building infrastructure (as they have done in Japan). They should make the first 10lacs tax free, next 40 lacs 10% and 20% beyond 50lacs income.
Will jetli reduce taxes? Probably but only a token amount, the man is working against modi. He needs to be retired