I wish to allocate backup withholding tax paid by a trust to the trust's beneficiaries. IRS instructions for line 14 of Form 1041's Schedule G say that backup withholding can be distributed to beneficiaries by reporting a credit on Schedule K-1, box 13, code B for each beneficiary. As best I can determine, however, TurboTax Business makes no provision and provides no guidance for such a step and when I make manual entries in box 13 of Schedule K-1, TurboTax makes no adjustment for claimed withholding tax on Form 1041, leaving me in the untenable position of claiming a credit for backup withholding on the trust's Form 1041 while simultaneously allocating a credit for this withholding tax to beneficiaries. TurboTax generates no error message when I do so, effectively allowing me to claim a credit for withholding tax twice. Obviously, this cannot be right. What is the solution?