The Family Trust Tax Rate Changed Dramatically After 2016, and Most California Families Never Adjusted

A family in Pasadena set up an irrevocable trust in 2016. The trust earned $12,000 in interest and dividends that year. The federal tax bill came to roughly $2,500. Fast-forward to 2026, and that same $12,000 inside the trust now triggers a federal tax bill north of $4,200, plus California tacks on another $1,590 at 13.3%. The family never changed the trust structure. The IRS changed the rules around them.

If you have been searching for the family trust tax rate 2016 to compare what you paid then versus what you owe now, you are not alone. Thousands of California families created irrevocable trusts during that era and have not revisited the tax math since. That oversight is costing them $3,000 to $18,000 every single year in unnecessary trust-level income tax, money that could stay in the family with a few strategic adjustments.

Quick Answer

The family trust tax rate in 2016 hit the top 39.6% federal bracket at $12,400 of taxable income. In 2026, trusts reach the top 37% bracket at just $15,200 of taxable income, but when you add the 3.8% Net Investment Income Tax (NIIT) and California’s 13.3% rate, the combined effective rate on undistributed trust income can exceed 54%. The compressed bracket structure means trusts pay the highest marginal rates on income levels that would barely dent an individual’s standard deduction. The fix is not dissolving the trust. The fix is distributing income strategically so it gets taxed at the beneficiary’s lower individual rates instead.

How the Family Trust Tax Rate in 2016 Compared to Today’s Crushing Brackets

In 2016, the federal trust tax brackets looked like this:

Taxable Income	2016 Federal Rate	2026 Federal Rate
$0 to $2,550	15%	10%
$2,551 to $5,950	25%	24%
$5,951 to $9,050	28%	35%
$9,051 to $12,400	33%	35%
Over $12,400 (2016) / Over $15,200 (2026)	39.6%	37%

At first glance, the 2026 top rate looks lower. But that is misleading. The One Big Beautiful Bill Act (OBBBA) made the 37% rate permanent, yet the compressed bracket structure still punishes trusts. A trust hits the 37% ceiling at $15,200. An individual does not hit 37% until $626,350 of taxable income. That is a 41-to-1 compression ratio.

Add the 3.8% NIIT under IRC Section 1411 on net investment income above $15,200 for trusts (compared to $200,000 for single filers), and the effective federal rate on trust investment income becomes 40.8%. Layer in California’s 13.3% rate under Revenue and Taxation Code (R&TC) Section 17041, which applies to all trust income with no preferential capital gains rate, and you are staring at a combined rate that can exceed 54.1%.

Why the 2016 Structure No Longer Works

Many families who created trusts in 2016 designed them to accumulate income inside the trust. That made sense when interest rates were near zero and trusts were generating $2,000 to $5,000 annually. But with current money market rates between 4% and 5%, a trust holding $300,000 in liquid assets now generates $12,000 to $15,000 in annual income. That income gets taxed at the highest bracket almost immediately.

An individual beneficiary earning that same $12,000 in a typical W-2 job alongside would pay an effective federal rate of 12% or less. The trust pays 37% plus NIIT. The spread is $3,000 or more in unnecessary federal tax alone, before California even takes its cut.

The Five Costliest Trust Tax Mistakes California Families Make After 2016

Most families do not realize they are overpaying. Here are the five mistakes we see repeatedly at KDA, each one traceable to a trust structure that was never updated after 2016.

Mistake 1: Retaining All Income Inside the Trust

This is the most expensive error. Trust income that stays in the trust gets taxed at the compressed rates described above. But under IRC Section 661, the trust gets a deduction for income distributed to beneficiaries. The income then shifts to the beneficiary’s individual return, where it is taxed at their (usually much lower) marginal rate. A trust distributing $15,000 to a beneficiary in the 22% bracket instead of retaining it at 37% saves $2,250 in federal tax alone. Add California savings and you are looking at $3,300 or more.

Mistake 2: Ignoring the 65-Day Election Under IRC Section 663(b)

Trustees often do not realize they have 65 days after the end of the tax year to make distributions that count as if they were made in the prior year. This is the 65-day election, and it is filed on Form 1041, Schedule B. If your trust had a high-income year, you have until March 6 of the following year to distribute income to beneficiaries and retroactively shift that tax burden. Missing this window means paying compressed trust rates on income that could have been taxed at individual rates.

Mistake 3: Failing to Allocate Capital Gains to Beneficiaries

By default, capital gains stay in the trust corpus and are taxed at the trust level. But if the trust document grants the trustee discretion to allocate capital gains to beneficiaries, or if the trust has a consistent practice of doing so, those gains can shift to the beneficiary’s return under Treasury Regulation 1.643(a)-3. On a $50,000 capital gain, the difference between the trust paying 23.8% (20% plus 3.8% NIIT) and a beneficiary in the 15% bracket paying 15% is $4,400 in federal savings.

Mistake 4: Not Filing California Form 541 Correctly

California taxes trust income based on the residency of the trustee and the source of income, not just the residency of the grantor. Under R&TC Section 17742, if the trustee is a California resident, all trust income may be subject to California’s 13.3% rate. Many families who moved out of California still have a California-based trustee, which means their trust income is still fully taxable by the Franchise Tax Board (FTB). A simple trustee change to a non-California resident (where permitted by the trust instrument) can eliminate the state tax entirely on non-California-source income.

Mistake 5: Skipping the Qualified Disability Trust (QDT) Election

If any beneficiary of the trust is disabled, the trust may qualify as a Qualified Disability Trust under IRC Section 642(b)(2)(C). A QDT gets the full individual standard deduction ($15,000 in 2026) instead of the $300 deduction that most trusts receive. On $15,000 of trust income, this election alone saves $5,439 in federal tax. It is one of the most overlooked provisions in trust taxation.

If you are managing a trust and want to find out exactly which bracket your income falls into, run the numbers through this tax bracket calculator to see the gap between trust-level and individual-level taxation.

Strategic Income Distribution: The $8,300 Annual Fix Most Trustees Never Implement

The single most powerful tool to reduce trust taxes is strategic income distribution. It is not complicated. It does not require dissolving the trust or rewriting the trust document. It requires the trustee to exercise distribution authority with tax efficiency in mind.

Here is how the math works on a trust earning $25,000 in annual income:

Scenario	Federal Tax	California Tax	Total Tax
Income retained in trust	$8,578	$3,325	$11,903
Income distributed to beneficiary (22% bracket)	$3,069	$0 (non-CA beneficiary)	$3,069
Annual Savings	$5,509	$3,325	$8,834

Over five years, that is $44,170 in total tax savings from one structural adjustment. Over the life of a 20-year trust, the savings exceed $176,000.

The Distributable Net Income (DNI) Ceiling

Distributions are deductible by the trust only up to the trust’s Distributable Net Income (DNI), as defined under IRC Section 643(a). DNI is essentially the trust’s taxable income with a few modifications (tax-exempt interest is removed, capital gains typically stay in the trust, and the personal exemption is added back). The trustee cannot distribute more than DNI and claim a deduction for it. This is why tracking DNI precisely matters. If you distribute $30,000 but DNI is only $20,000, only $20,000 shifts to the beneficiary’s return.

For deeper strategies on trust planning, estate structuring, and multi-generational wealth transfer, explore our comprehensive California estate and legacy tax planning guide.

Choosing the Right Beneficiaries for Distributions

Not all beneficiaries are created equal from a tax perspective. The trustee should consider:

• Beneficiaries in the lowest tax brackets receive the greatest benefit from shifted income
• Beneficiaries outside California eliminate the 13.3% state layer entirely on distributed income
• Beneficiaries who are students or retirees with minimal other income may pay close to zero on distributions
• Beneficiaries subject to the kiddie tax (under 19, or under 24 if students) may see unearned income taxed at the parent’s rate under IRC Section 1(g), negating the benefit

Our premium advisory services help high-net-worth families navigate these distribution decisions with precision, ensuring every dollar is distributed to the right person at the right time.

California-Specific Trust Tax Traps That Did Not Exist in 2016

California’s treatment of trust income has tightened since 2016, and several rules now create additional exposure that families who set up trusts a decade ago never planned for.

Trap 1: The FTB’s Expanded Throwback Rule

Under R&TC Section 17745, California imposes a throwback tax on accumulation distributions from trusts. If a trust accumulated income in prior years and then distributes that accumulated income to a California beneficiary, the beneficiary may owe California tax on those prior-year accumulations as if they were earned in the year of distribution. This can result in a massive, unexpected state tax bill when a trust makes a lump-sum distribution of previously retained income.

Trap 2: The $800 Minimum Franchise Tax

Every irrevocable trust that is a California resident trust or earns California-source income owes a minimum $800 annual franchise tax under R&TC Section 17935. This applies even if the trust has zero net income for the year. Many families forget this payment, and the FTB adds penalties and interest that compound quickly.

Trap 3: No Capital Gains Preference

While the federal government taxes long-term capital gains at preferential rates (0%, 15%, or 20%), California does not. All capital gains inside a California trust are taxed at the same 13.3% rate as ordinary income. A trust that sold $100,000 of appreciated stock pays $13,300 in California tax regardless of the holding period. This is a 13.3% penalty that does not exist in most other states.

Trap 4: AB 150 PTE Election Does Not Apply to Trusts

The AB 150 Pass-Through Entity (PTE) tax election that allows S Corps and partnerships to bypass the $40,000 SALT cap does not apply to trusts or estates. This means trust income cannot benefit from the PTE workaround, making strategic distribution to individual beneficiaries (who may own pass-through entities that do qualify) even more critical.

Trap 5: Mental Health Services Tax Surcharge

Trusts earning more than $1 million in taxable income are subject to California’s additional 1% Mental Health Services Act surcharge under Proposition 63, bringing the top California rate to 14.3% on trust income above that threshold. For high-asset trusts, this extra percentage point adds thousands to the annual state tax bill.

KDA Case Study: Bay Area Family Saves $14,800 After Restructuring a 2016 Trust

A family in San Jose established an irrevocable trust in 2016 to hold $450,000 in investment assets for their two adult children. The trust was generating approximately $22,000 in annual income (dividends, interest, and capital gains). The trustee, the family’s eldest sibling, had been retaining all income inside the trust since inception.

When they came to KDA, the trust was paying $7,150 in federal tax plus $2,926 in California tax annually, totaling $10,076 per year. Both beneficiaries lived in Nevada (no state income tax) and had modest incomes in the 12% federal bracket.

KDA implemented a three-part strategy:

• Activated the 65-day election under IRC Section 663(b) to retroactively distribute $18,000 of the prior year’s income to both beneficiaries
• Restructured the trust’s investment allocation to shift growth-oriented holdings (which generate fewer annual taxable events) into the trust and income-producing assets into individual accounts
• Filed amended Form 541 and Form 1041 for the prior year, capturing $4,200 in overpaid tax as a refund

The result: $14,800 in first-year tax savings (including the refund) against a KDA fee of $4,200, delivering a 3.5x first-year ROI. Projected five-year savings total $52,000.

Ready to see how we can help you? Explore more success stories on our case studies page to discover proven strategies that have saved our clients thousands in taxes.

OBBBA Permanent Changes That Affect Family Trusts in 2026 and Beyond

The One Big Beautiful Bill Act (OBBBA) locked in several provisions that directly impact trust taxation going forward:

$15 Million Estate and Gift Tax Exemption

The lifetime estate and gift tax exemption is now permanently set at approximately $15 million per person (indexed for inflation). This changes the calculus for many families. If your estate is below $15 million, the trust may no longer be necessary for estate tax avoidance purposes. However, trusts still serve critical roles for asset protection, creditor shielding, and Medicaid planning.

Permanent 37% Top Rate

The top trust income tax rate is locked at 37% (down from the pre-TCJA 39.6%). While this is a slight improvement from 2016 rates, the compressed brackets mean most trust income still hits this ceiling almost immediately.

$40,000 SALT Cap

The OBBBA raised the state and local tax (SALT) deduction cap to $40,000. For trusts, this provides minimal relief because the trust’s SALT deduction is limited to taxes paid on trust-level income. Most trusts cannot fully utilize this cap because their California tax payments on retained income exceed it.

Permanent QBI Deduction Under IRC Section 199A

If your family trust owns an interest in a pass-through business, the trust may be eligible for the 20% Qualified Business Income deduction. This deduction reduces the effective tax rate on qualified business income from 37% to 29.6% at the trust level. However, the deduction phases out for specified service trades or businesses above the trust income threshold of $191,950 (2026), which most trusts hit almost instantly.

100% Bonus Depreciation Restored

The OBBBA restored 100% bonus depreciation. For trusts that own rental property or business assets, this allows full first-year write-offs. California does not conform to bonus depreciation under R&TC Section 17250, requiring a separate California depreciation schedule.

What If My Trust Was Set Up in 2016 and I Have Not Changed Anything?

If your trust has been operating on autopilot since 2016, here is a practical checklist to assess your exposure and identify savings opportunities:

1. Pull the last three years of Form 1041 and California Form 541. Look at Line 22 (total tax) on both forms. Add them together. That is your annual trust tax cost.
2. Review the trust document for distribution authority. Does the trustee have discretion to distribute income? Can capital gains be allocated to beneficiaries? If the answer is yes to either, you have immediate tax-saving options.
3. Identify each beneficiary’s current tax bracket. If any beneficiary is in the 10%, 12%, or 22% federal bracket, distributing trust income to them creates an instant tax rate reduction.
4. Check the trustee’s state of residence. If the trustee lives in California but the beneficiaries do not, a trustee change may eliminate California taxation on non-California-source income.
5. Evaluate whether the trust is still necessary. With the $15 million estate exemption now permanent, some trusts created for estate tax avoidance in 2016 (when the exemption was $5.45 million) may no longer serve their original purpose. Decanting or terminating the trust may be appropriate.
6. File the 65-day election before March 6. If you missed it this year, put it on the calendar for next year. This single election can save $2,000 to $8,000 annually.

Our tax planning services include a full trust tax review that identifies every available savings opportunity in your existing trust structure.

Should You Dissolve or Decant a Trust Created in 2016?

Not every trust deserves to survive. If your trust was created solely for estate tax avoidance and your estate is now well below $15 million, the trust may be creating unnecessary tax drag without delivering its intended benefit.

Trust Dissolution

If the trust document permits it, the trustee may distribute all assets to beneficiaries and terminate the trust. This eliminates the compressed bracket problem permanently. However, dissolution also eliminates asset protection, creditor shielding, and any generation-skipping transfer (GST) tax exemption allocated to the trust.

Trust Decanting

California’s Uniform Trust Decanting Act (Probate Code Sections 19501 through 19530) allows a trustee with distribution discretion to “pour” trust assets into a new trust with more favorable terms. This can be used to add distribution provisions, change trustee succession, modify investment powers, or restructure the trust for tax efficiency without triggering a taxable event.

When to Keep the Trust

Trusts remain valuable for:

• Asset protection from lawsuits, divorces, and creditor claims
• Medicaid planning where trust assets may be excluded from eligibility calculations
• Generation-skipping wealth transfer using the $15 million GST exemption
• Spendthrift protection for beneficiaries who cannot manage money responsibly
• Privacy because trust assets avoid probate and the public record

The decision is not binary. In many cases, the right answer is to keep the trust but change how it operates, shifting from income accumulation to strategic distribution.

Frequently Asked Questions About the Family Trust Tax Rate

What Was the Top Federal Trust Tax Rate in 2016?

The top federal trust tax rate in 2016 was 39.6%, which applied to trust taxable income over $12,400. In 2026, the top rate is 37%, applying to income over $15,200. However, when you add the 3.8% NIIT, the effective top rate on trust investment income is 40.8%.

Does California Tax Trust Income Differently Than Federal?

Yes. California taxes all trust income at the same rate, regardless of type. There is no preferential rate for long-term capital gains or qualified dividends. The top California rate is 13.3% (14.3% for trusts over $1 million), and it applies to trust income sourced to California or held by California-resident trustees under R&TC Section 17742.

Can I Avoid Trust Taxes by Moving the Trustee Out of California?

Potentially. If the trust earns no California-source income and the trustee, all beneficiaries, and the administration of the trust move outside California, the FTB may lose jurisdiction to tax the trust. However, this analysis is fact-specific and depends on R&TC Section 17742 through 17745. Consult with a tax professional before making trustee changes.

Is the 65-Day Election Available Every Year?

Yes. The election under IRC Section 663(b) can be made annually. It must be filed with the trust’s Form 1041 for the applicable tax year. There is no limit to how many years you can use it, and it applies to both simple and complex trusts.

What Happens If I Distribute More Than DNI?

The trust can only deduct distributions up to DNI. Any distribution exceeding DNI is treated as a nontaxable return of corpus to the beneficiary and does not trigger income tax. However, it does reduce the beneficiary’s basis in the trust, which could create capital gains if the trust interest is later sold or the trust terminates.

Do I Need a New EIN If I Change the Trustee?

Generally, no. A trustee change does not require a new EIN for an existing irrevocable trust. The EIN follows the trust entity, not the individual trustee. However, if the trust is revocable and the grantor dies (converting it to irrevocable), a new EIN is required at that point, as explained in IRS EIN guidance.

This information is current as of April 14, 2026. Tax laws change frequently. Verify updates with the IRS or FTB if reading this later.

Book Your Trust Tax Strategy Session

If your family trust was created in 2016 or earlier and you have not reviewed the tax structure since, you are almost certainly overpaying. The compressed trust tax brackets, California’s aggressive sourcing rules, and the OBBBA permanent changes all create opportunities that did not exist when your trust was drafted. Book a personalized consultation with our strategy team, and we will show you exactly how much your trust is overpaying and the specific steps to fix it. Click here to book your trust tax review now.