Trust Tax Calculator 2025 β Income Tax on Trusts (Simple, Complex, Grantor)
Calculate income tax on trust income using 2025 compressed trust tax brackets. Compare simple, complex, and grantor trust tax treatment.
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For simple trusts, must equal income $
Trustee fees, accounting, other admin costs $0
Trust Income Tax
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Effective Tax Rate
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Marginal Bracket
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Net Income After Tax
Trust Tax Bracket Breakdown
| Bracket | Range | Income in Bracket | Tax |
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Trust Tax Summary
How to Use This Trust Tax Calculator
Enter the trust's annual income and select the trust type. For simple trusts, income must be distributed to beneficiaries (reducing the trust's tax liability). For complex trusts, you can choose how much to distribute. Grantor trusts pay no trust-level tax β all income passes to the grantor's personal return.
The Formula
Trust Taxable Income = Gross Income β Deductions β Distribution Deduction (up to DNI)
Personal Exemption: Simple Trust = $300 | Complex Trust = $100
2025 Trust Brackets: 10% on $0β$3,150 | 24% on $3,150β$11,450 | 35% on $11,450β$15,650 | 37% above $15,650
Personal Exemption: Simple Trust = $300 | Complex Trust = $100
2025 Trust Brackets: 10% on $0β$3,150 | 24% on $3,150β$11,450 | 35% on $11,450β$15,650 | 37% above $15,650
Example
Complex trust with $50,000 income, $5,000 deductions, retains all income:
Taxable income: $50,000 β $5,000 β $100 (exemption) = $44,900
Tax: $3,150 Γ 10% + $8,300 Γ 24% + $4,200 Γ 35% + ($44,900 β $15,650) Γ 37%
= $315 + $1,992 + $1,470 + $10,823 = $14,600
Effective rate: 32.5% β much higher than individual rates at same income level!
Taxable income: $50,000 β $5,000 β $100 (exemption) = $44,900
Tax: $3,150 Γ 10% + $8,300 Γ 24% + $4,200 Γ 35% + ($44,900 β $15,650) Γ 37%
= $315 + $1,992 + $1,470 + $10,823 = $14,600
Effective rate: 32.5% β much higher than individual rates at same income level!
Extended
Trust Type Comparison & Distribution Analysis
Compare tax cost of accumulating income in trust vs distributing to beneficiaries at individual rates
Trust Accumulation vs Distribution β Tax Comparison
| Scenario | Taxable Income | Tax Owed | Effective Rate | Net Retained |
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In most cases, distributing trust income to beneficiaries in lower tax brackets significantly reduces total taxes paid.
Frequently Asked Questions
How is trust income taxed differently from individual income?
Trusts face compressed tax brackets β they reach the top 37% federal rate at just $15,650 of taxable income in 2025, compared to $626,350 for single individuals. This makes accumulating income inside a non-grantor trust very expensive from a tax perspective. Distributions to beneficiaries are generally taxed at the beneficiary's lower individual rates instead.
What is the difference between a simple trust and a complex trust?
A simple trust must distribute all income to beneficiaries annually, cannot make charitable distributions, and cannot distribute principal. A complex trust has more flexibility β it can accumulate income, make charitable distributions, and distribute principal. Different tax rules apply: simple trusts get a $300 personal exemption; complex trusts get a $100 exemption.
What is a grantor trust and how is it taxed?
In a grantor trust, the person who created the trust (the grantor) retains certain control or economic interests, so all trust income is taxed to the grantor at their individual rates β not to the trust. Common types include revocable living trusts, intentionally defective grantor trusts (IDGTs), and certain irrevocable trusts. Grantor trusts avoid the compressed trust brackets.
What is a distributable net income (DNI) and why does it matter?
Distributable Net Income (DNI) is the maximum amount of trust income that can be distributed to beneficiaries and deducted by the trust. When a trust distributes income up to DNI, the income is taxed at the beneficiary's rate, not the trust's compressed rate. Distributions above DNI may be tax-free returns of principal.
Do trusts pay the Net Investment Income Tax (NIIT)?
Yes. Trusts are subject to the 3.8% Net Investment Income Tax (NIIT) on the lesser of net investment income or the amount of AGI exceeding the threshold. For trusts, the 2025 NIIT threshold is just $15,650 β the same as the top ordinary income bracket. This means trust investment income above this amount faces a combined federal rate of up to 40.8% (37% + 3.8%).