Thanks for replying Taxoh, I looked there earlier, but did not see a definite answer for my situation. the grantor had been filing with option 1 using his SS (no 1041). When he passed the trustee obtained a EIN for trust, and he gave that number to brokerage to issue 1099s in that number. Said broker will not divide it into two EIN. Problem is part of year is going on his final 1040, and balance will be on the trust return after he passed, so can I use the EIN the trustee got for both the grantor trust 1041, and the 1041 after he passed