Does the section 44ADA really help to save tax?
Yes, if you are in one of the allowed professions.
What's the benefit if someone is earning the same amount from an Indian company and the same from a company outside India?
Pros: Taxable income is essentially cut into half if filing under 44ADA
Cons: No contributions to EPF/PPF. No sponsored insurances, etc. No further deductions on the ½ taxable, so 80C doesn't do anything. Also loans are hard to come by since you're technically "self-employed"
Also you gotta pay advance taxes and all that.
I've read the rule change if you make above 50L.
Since this FY, it's above 75L now.