Unfortunately, I am not acquainted with Indian Tax law, so I am not able to advice you on this. But, I would presume that if you earn income from affiliate marketing, your profit from the business will be tax under your personal income. That is unless you create a company to run the operation, then it will be subject to corporate tax, and the dividends receive from the company will be subject to your local personal tax.
Owning and maintaining an online business gives entrepreneurs the freedom to make money remotely from anywhere in the world. The idea is enticing, and more possible than ever, but many entrepreneurs struggle with how to get started. The most important step in starting a profitable online business is finding a business idea that matches your skills and strengths.