we know nothing about the Family trust that got the K-1 and other tax documents. the FT could be a Simple Trust - 1041 required - all ordinary income passes through to its beneficiaries. a Complex Trust. if the income was not distributed in accordance with the trust document and the tax laws, the trust would report all the income and pay the taxes. Grantor trust with its Tax ID # on the K-1 and other tax documents received. - file a 1041 grantor trust return. the income also gets reported on the grantor's return. Grantor Trust with the grantor's SSN on all the tax documents - no 1041 required. pick up the income directly on the taxpayers's return with the matching SSN.
your best clue is to look at prior returns.
