Topic: Revised ITR Form

I have following queries:
1) I am a salaried employee(since 2005) and have home loan(since 2007). Last year I(as per the advise of my tax consultant) filed ITR-1. But I think I should have filed ITR-2. So what corrections I can do for last year wrongly filed ITR form. Can I RE-SUBMIT the income tax return for last year with ITR-2 now? Please let me know what are the best possible things that I can do to correct this now.

2) From last year, my wife started to do stock trading(not intraday) and also taking tuitions. Last year she(as per the advise of our tax consultant) filed ITR-2. But I think she should have filed ITR-4. So what corrections she can do for last year wrongly filed ITR form. Can she RE-SUBMIT the income tax return for last year with ITR-4 now? Please let us know what are the best possible things that she can do to correct this now.

I have heard that a person can file the revised return by one year or before the assessment doneby IT department. Is this true? If yes, then one year is already gone and by the way how a person can know whether his ITR is assessed or not by now. Please guide me.

how can i file revised return

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