When Income Can Replenish Principal
Trust accounting draws a firm line between income and principal. Income goes to current beneficiaries. Principal is preserved for remainder beneficiaries. But some expenses blur the line. A major roof replacement, a capital improvement on rental property, or a large brokerage commission can drain principal even though the expense benefits income-producing assets. This statute gives the trustee a practical tool: the authority to transfer funds from income to reimburse principal or build a reserve for future costs.
If a trustee makes or expects to make a principal disbursement described in this section, the trustee may transfer an appropriate amount from income to principal in one or more accounting periods to reimburse principal or to provide a reserve for future principal disbursements.
A.R.S. § 14-7428(A)The key word is "appropriate." The trustee has discretion to decide how much to transfer and over how many accounting periods to spread it. That flexibility lets the trustee handle uneven costs without shocking income beneficiaries with a single large deduction.
What Types of Costs Qualify
Not every principal expense triggers this reimbursement authority. The statute lists specific categories: unusually large charges that would normally come from income (like extraordinary repairs), capital improvements to trust property, costs to prepare property for rental (including tenant allowances and broker commissions), and periodic payments on a secured obligation when depreciation transfers are not keeping pace. The trustee can only reimburse principal to the extent a third party has not already covered or is not expected to cover the cost.
Principal disbursements to which subsection A of this section applies include the following, but only to the extent that the trustee has not been and does not expect to be reimbursed by a third party.
A.R.S. § 14-7428(B)This provision protects both sides of the trust. Income beneficiaries are not forced to cover costs that belong to principal, and remainder beneficiaries are not left absorbing costs that genuinely benefit the income stream.
