During the last Indian financial year (Apr 2010- Mar 2011), I was salaried in US (H1b) from Apr to Sep and earned 50,000 USD, from which money is deducted/withheld for US federal and state income tax purposes. I returned back to India in Oct and started working independently and will earn approximately 20 lac rupees until Mar 31st. If I stay outside of India for 20 days before 31st March, I will be a NRI, else a ROR. I understand that I will be taxed on my Indian income irrespective of my resident status - right? I want to know whether my salaried income in US from Apr-Sep will be taxable in US as well as in India if I were 1. a NR or 2. ROR? Will I be double taxed and which status can save that?

This forum is about the U.S. taxes. Income earned while in U.S. is U.S. income to be reported on U.S. tax return.
Also if you are citizen or resident of U.S. you must report worldwide income on your tax return.
For India taxes, you can post your question at mytaxes - Index

If you opt to file as a resident for all of 2010 on the U.S. return, you can file Form 1116 to claim the Foreign Tax Credit for taxes paid to Indian from October to 31 December 2010.

You also need to submit a Residency Termination Statement to the IRS, either WITH the return or separately.

If you need professional help with the U.S. tax return, contact me at [email protected].