Trust Accounting Income
vs. Distributable Net Income
There are two separate sets of rules that apply to every trust distribution. One set determines how much money goes out the door. The other determines how much of it is taxable. They almost never produce the same number.
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Two sets of rules for the same distribution
When a trust makes a distribution to a beneficiary, two different calculations are happening at the same time.
The first is trust accounting income, or TAI. This is determined by the trust document and state law. It answers the question: how much is the trustee required or allowed to distribute to the income beneficiaries? TAI is a fiduciary accounting concept. It has nothing to do with the IRS.
The second is distributable net income, or DNI. This is determined by the tax code. It answers a different question: how much of the distribution is taxable to the beneficiary, and how much can the trust deduct on its tax return? DNI is calculated on the trust’s Form 1041.
These two numbers are almost always different. The trustee distributes based on TAI, but the IRS taxes based on DNI. Understanding the gap between them is key to understanding why your K-1 shows a different number than what you actually received, and why some distributions are taxable while others are not.
What counts as trust accounting income
Trust accounting income generally includes the kinds of income you would expect: interest on bank accounts and bonds, dividends from stocks, rent from property, and similar receipts. These are allocated to "income" under the trust document and belong to whoever the trust says should receive the income.
Capital gains from selling investments or property are usually not part of trust accounting income. Instead, they are allocated to "principal," which stays in the trust for the remainder beneficiaries (the people who receive what is left when the trust ends). This is the default rule under most state laws, though some trust documents change it.
The trust document can override the state defaults. If the document defines income to include certain items that state law would normally allocate to principal (or vice versa), the trust document controls.
What counts as distributable net income
DNI is a tax calculation. It starts with the trust’s taxable income and makes several adjustments. The important ones are:
- Tax-exempt interest (like municipal bond income) is added in, because the IRS wants to track it even though it is not taxed
- Capital gains allocated to corpus (principal) are taken out, because if they stay in the trust, they should not be counted as distributable
The result is a number that represents how much income the trust could distribute in a way that shifts the tax liability to the beneficiary. It also determines what types of income appear on the beneficiary’s K-1: if the trust’s DNI is 70% ordinary income and 30% tax-exempt interest, every distribution carries that same mix.
When the numbers do not match
Because TAI and DNI are calculated differently, the amount a beneficiary receives and the amount that is taxable on the K-1 are almost always different.
If the trust distributes more than its DNI (because TAI is larger), the extra amount is not taxable to the beneficiary. It is treated as a tax-free distribution of the trust’s principal.
If the trust’s DNI is larger than what it distributes (because TAI is smaller), the undistributed income stays in the trust and is taxed at the trust’s rates. Trust tax rates reach the highest bracket at approximately $16,000 of income, compared to over $640,000 for an individual. This is why undistributed trust income is so expensive from a tax perspective.
The capital gains question
Capital gains are usually the biggest item in the gap between TAI and DNI. If the trust sells a stock for a large gain, that gain is typically allocated to principal (not income) under the trust document, and it is also excluded from DNI under the tax code. The result is that the gain stays in the trust, is taxed at the trust’s compressed rates, and cannot be distributed to beneficiaries to take advantage of their lower tax brackets.
However, some trust documents give the trustee the authority to distribute capital gains to beneficiaries, or to treat capital gains as income rather than principal. If the trust document allows this, the trustee can include the capital gains in DNI, distribute them, and shift the tax to the beneficiary where it may be taxed at a much lower rate.
This is one of the most valuable provisions a trust document can contain. If you are a trustee and you are not sure whether your trust document allows capital gains to be distributed, it is worth having the document reviewed.
When the trustee can adjust the rules
Most states have adopted laws that give trustees some flexibility to adjust what counts as income and what counts as principal. This is called the "power to adjust," and it exists so that trustees can treat income and remainder beneficiaries fairly even when investment returns shift between interest (income) and growth (principal).
Some states also allow trustees to convert the trust to a "unitrust," which replaces the traditional income/principal distinction with a simple percentage payout, usually between 3% and 5% of the trust’s total value each year. Under a unitrust, the trustee distributes the same percentage regardless of whether the trust earned interest, dividends, or capital gains that year.
Both of these tools change the TAI calculation, which changes how much gets distributed, which changes how much DNI flows through to beneficiaries. They can be useful for managing the overall tax burden, but the interaction with the tax rules needs to be evaluated carefully.
What we handle
- Calculating both TAI and DNI and explaining the gap
- Reviewing the trust document for distribution authority and income/principal provisions
- Determining whether capital gains can be included in distributions
- Evaluating power-to-adjust and unitrust conversion options under your state’s law
- K-1 preparation that accurately reflects the character of distributed income
- Coordinating TAI/DNI analysis with distribution planning, the 65-day rule, and NIIT strategy
Frequently Asked Questions
What is trust accounting income?
Trust accounting income (TAI) is the amount of income that the trust document and state law say belongs to the income beneficiaries, as opposed to the principal (which belongs to the remainder beneficiaries). It typically includes interest, dividends, and rents, but not capital gains. The trust document may define income differently from the default state rules, so the specific language in the trust matters. TAI determines what the trustee is required or allowed to distribute to income beneficiaries each year.
What is distributable net income?
Distributable net income (DNI) is a tax concept defined by the Internal Revenue Code. It serves two purposes: it limits how much of a distribution the trust can deduct on its tax return, and it limits how much of the distribution is taxable to the beneficiary. DNI is calculated on the trust’s Form 1041 and determines the character of income (ordinary, capital gain, tax-exempt) that flows through to beneficiaries on their K-1s. It is a different number from trust accounting income, even though both relate to distributions.
Why do trust accounting income and distributable net income not match?
They are calculated under completely different rules. Trust accounting income follows the trust document and state law. Distributable net income follows the Internal Revenue Code. The biggest difference is usually capital gains: most trust documents allocate capital gains to principal (not income), and the tax code also excludes them from DNI by default. But other items differ too. Tax-exempt interest is included in DNI but is not taxable. Expenses may be allocated differently. The result is that the amount distributed (based on TAI) and the taxable portion of that distribution (based on DNI) are almost always different numbers.
Can capital gains be distributed to beneficiaries?
It depends on what the trust document says. Most trust documents allocate capital gains to principal, which means they stay in the trust and cannot be distributed as income. However, some trust documents give the trustee authority to distribute capital gains, or to allocate them to income rather than principal. If the trust document allows it and the trustee actually distributes them (or consistently treats them as part of distributions on the trust’s books), the capital gains can be included in distributable net income and passed through to beneficiaries on their K-1s. This can be a significant tax savings because the trust pays tax on capital gains at the highest rate starting at approximately $16,000, while most individual beneficiaries have a much higher threshold.
Related services
Estate & Trust Income Tax
The 1041 where DNI is calculated and K-1s are generated for beneficiaries.
65-Day Rule Election
Post-year-end distributions that absorb DNI and shift income to beneficiaries.
Grantor Trust Returns
Grantor trusts sidestep the TAI/DNI distinction entirely because all income is taxed to the grantor.