We came to know that we have to put our incomes in five buckets, get each bucket total, add them up to arrive at the Grand viz Gross Total.
Then we find what benefits we get, and total up such Deductions. We do a A-B, am not telling you whats A and whats B. We arrive at destination of Total Income also called Taxable Income. Its sometimes negative possible. But for negative we get a carry over, its not that Government pays tax to us.