Principal vs. income in a trust accounting, explained.
It's the distinction generalists most often get wrong — and the one a court accounting depends on. Here's what principal and income actually mean, why beneficiaries care, and how the rules allocate each.
The short version
- Income is what the assets produce: interest, dividends, rents.
- Principal is the assets themselves and changes in their value: the property, sale proceeds, capital gains.
- Two beneficiary groups are paid from those two buckets, so every dollar has to land in the right one.
- UFIPA sets the rules — CA Prob. Code §16320 (eff. 1/1/2024), FL Ch. 738 (eff. 1/1/2025).
Why a trust splits "principal" and "income"
Many trusts pay two kinds of beneficiaries with competing interests. An income beneficiary is entitled to what the trust earns, typically for life. A remainder beneficiary receives what's left, the principal (also called corpus), when the trust ends. A surviving spouse might take the income for life, for example, with the children taking the principal afterward.
Those two groups are paid from two different buckets, so every dollar through the trust has to be assigned to the right one:
- Call interest "principal" and you shortchange the income beneficiary.
- Call a capital gain "income" and you erode the remainder beneficiaries' share.
The accounting has to get this right, line by line.
The general rule: produced vs. the property itself
Start with what an asset does versus what it is. Income is what the assets produce. Principal is the assets themselves and any change in their value. The common items map cleanly:
| Item | Allocation | Why |
|---|---|---|
| Interest | Income | Produced by the asset |
| Dividends | Income | Produced by the asset |
| Rents | Income | Produced by the asset |
| Original property / sale proceeds | Principal | The asset itself |
| Capital gains | Principal | Change in the asset's value |
| Return of capital | Principal | Giving back the asset, not its earnings |
That covers the easy cases. The rule of thumb only goes so far, and many real-world items don't fit neatly.
Where it gets genuinely tricky
The hard calls are exactly where mistakes happen:
- Distributions from entities — a payout from an LLC or partnership can be income or a return of capital (principal), depending on its character.
- Bond premium and discount, and accruals across the start and end of the accounting period.
- Trustee fees and administration costs, which are split between principal and income under specific rules rather than charged entirely to one.
- Wasting or liquidating assets (royalties, certain natural-resource or deferred-comp interests) that carry their own allocation conventions.
- Adjustments and the "power to adjust," which can let a trustee shift between principal and income to treat beneficiaries fairly.
Watch outA misallocation pays the wrong beneficiary. Route a capital gain to income and the life tenant pockets what the remaindermen were owed — and that's precisely the line item a shorted beneficiary objects to.
The framework: UFIPA
The rules that govern these allocations come from the Uniform Fiduciary Income and Principal Act (UFIPA). California enacted it as Probate Code §16320 et seq., effective January 1, 2024, and Florida enacted its version as Fla. Stat. Chapter 738, effective January 1, 2025. UFIPA modernizes the older principal-and-income rules and provides default treatments for the tricky items above, while leaving the trust document's own terms in control where they speak.
What is UFIPA? The full rulebook, the power to adjust, and the effective dates →
DeadlineFor accountings that span the effective date, the older and newer rules can both apply depending on when each transaction occurred. That's one more reason multi-year catch-ups need careful, transaction-level handling rather than a blanket treatment.
Why this matters for your accounting
A court accounting presents receipts, disbursements, gains, distributions, and property on hand with principal and income separated. If that separation is wrong, a beneficiary who feels shorted can challenge the accounting, and the trustee is the one who answers for it. Getting principal and income right is what protects the trustee and treats the beneficiaries fairly.
This is core to what we do. We reconstruct the full transaction history and apply the principal/income rules line by line, so the accounting stands up in court and to the beneficiaries reading it.
Common questions
Is interest principal or income?
Income. Interest is what an asset produces, so it goes to the income beneficiary. Dividends and rents are treated the same way. The asset that earns it, and any change in its value, stays in principal.
Are capital gains principal or income?
Principal. A gain is a change in the value of the property itself, not a product of it, so it belongs to the remainder beneficiaries who take the principal. This differs from how the same gain is treated for income tax.
What is the trustee's "power to adjust"?
A discretionary power under UFIPA to shift amounts between principal and income when the default allocation would treat the income and remainder beneficiaries unfairly. It comes with conditions and is exercised within the trust's terms — not a free hand to favor one side.
Which rules apply, and when did they take effect?
UFIPA. California enacted Prob. Code §16320 et seq., effective January 1, 2024; Florida enacted Fla. Stat. Chapter 738, effective January 1, 2025. Accountings spanning the effective date may apply both old and new rules depending on when each transaction occurred.
This is general information, not legal or tax advice. Allocation outcomes depend on the trust instrument and the facts; confirm specifics with your attorney.
Need principal and income done right?
We separate them under UFIPA across years of records, and deliver a balanced, court-ready accounting. Free scope, fixed price.