26 U.S.C. § 6034: Returns by certain trusts

Every trust described in section 4947(a)(2) shall furnish such information with respect to the taxable year as the Secretary may by forms or regulations require. the amount of the deduction taken under section 642(c) within such year, the amount paid out within such year which represents amounts for which deductions under section 642(c) have been taken in prior years, the amount for which such deductions have been taken in prior years but which has not been paid out at the beginning of such year, the amount paid out of principal in the current and prior years for the purposes described in section 642(c), the total income of the trust within such year and the expenses attributable thereto, and a balance sheet showing the assets, liabilities, and net worth of the trust as of the beginning of such year. all the net income for such year, determined under the applicable principles of the law of trusts, is required to be distributed currently to the beneficiaries, or the trust is described in section 4947(a)(1).