I applied for my nephews itin along with my 1040 last march, in April they sent me a letter asking me for more information, I sent the information the last week of April, last Wednesday they sent me a letter saying that my itin number got rejected because I didn't send back the information that they asked me for, also the letter said that my 1040 was going to be processed and the amount that I was claiming was going to be recalculated since the itin was rejected. Today I checked the mailbox and there was a letter from the IRS with his itin number, so what is going to happened now? They are going to send me my return recalculated and I have to amend after that with the itin number that I got, or I am going to get the amount that I was claiming originally?

You will know when you get your refund or tax due letter.

More than lilely, you are going to have to amend the return because they will re-calculate it, bt you will nt know for sure until you get the refund.

If the refund is LESS than what you expect it to be, then you need to amend the return.

If it is what you expect or slightly more (due to interest paid by the IRS), then they did NOT recalculate and you will be good to go.