State Fiduciary Income Tax

California Form 541: The California Fiduciary Income Tax Return

Estates and trusts connected to California file Form 541 with the FTB — on top of, not instead of, the federal Form 1041. Here is who must file, the deadlines, the rates, and the California-specific rules that differ from federal.

E-File the Federal 1041Federal Form 1041 Guide

Quick Answer

Form 541 is California’s fiduciary income tax return, filed with the FTB. Due: The 15th day of the 4th month after the year ends — April 15 for calendar-year filers. Tax: California's graduated individual rates, up to 12.3%, plus the 1% mental health services tax on income over $1 million. It is filed in addition to the federal Form 1041 — prepare the federal return first, then the state return that builds on it.

Form 541 at a glance

ReturnForm 541 — California Fiduciary Income Tax Return
Filed withCalifornia Franchise Tax Board
Who must fileA trust with gross income over $10,000 (regardless of net income) or net income over $100; an estate with gross income over $10,000 or net income over $1,000. Nonresident estates and trusts file for California-source income.
Due dateThe 15th day of the 4th month after the year ends — April 15 for calendar-year filers.
ExtensionAutomatic 6 months, no application required. Use FTB 3563 only to send a payment with the extension; the tax itself is still due by the original date.
Tax rateCalifornia's graduated individual rates, up to 12.3%, plus the 1% mental health services tax on income over $1 million.
E-filingForm 541 participates in fiduciary e-file through FTB-approved software.

What makes California different

  • California sets its own filing thresholds — a trust can owe a Form 541 with as little as $100 of net income, and the $10,000 gross-income trigger applies even when there is no net income at all.
  • California taxes trusts on the residence of fiduciaries and even noncontingent beneficiaries, not just where income is earned — out-of-state trustees with California beneficiaries are routinely surprised by Form 541 obligations.

The federal return comes first

Form 541 does not replace the federal filing — an estate or trust that meets the federal thresholds ($600 of gross income, any taxable income for a trust, or a nonresident alien beneficiary) files the federal Form 1041 with the IRS and then the California return with the FTB, which generally starts from the federal figures. The practical workflow: finish the federal 1041 and its Schedule K-1s, then carry the numbers into Form 541. Our federal Form 1041 guide covers the thresholds, deadlines, and elections, and the Schedule K-1 guide explains what beneficiaries do with their share.

Start with the federal Form 1041

Prepare and e-file the federal fiduciary return through the IRS MeF system with an electronic acknowledgment — the foundation the California return builds on.

E-File the Federal 1041

California fiduciary tax FAQs

Who must file California Form 541?
A trust with gross income over $10,000 (regardless of net income) or net income over $100; an estate with gross income over $10,000 or net income over $1,000. Nonresident estates and trusts file for California-source income.
When is Form 541 due?
The 15th day of the 4th month after the year ends — April 15 for calendar-year filers. Extension: Automatic 6 months, no application required. Use FTB 3563 only to send a payment with the extension; the tax itself is still due by the original date.
What is the California fiduciary tax rate?
California's graduated individual rates, up to 12.3%, plus the 1% mental health services tax on income over $1 million. Rates and thresholds change — verify against the current Form 541 instructions from California Franchise Tax Board before computing.
Do I still file the federal Form 1041 if I file Form 541?
Yes — they are separate obligations. The federal Form 1041 goes to the IRS under the federal $600 gross-income (or any-taxable-income) thresholds, and Form 541 goes to the FTB under California's own rules. Most fiduciaries prepare the federal return first, since the state return typically starts from federal amounts.
Does a trust with a California beneficiary but an out-of-state trustee file Form 541?
Very possibly. California taxes trust income based on the residence of fiduciaries AND noncontingent beneficiaries — one of the broadest reaches of any state. A trust administered elsewhere can still owe California tax on the share attributable to a California noncontingent beneficiary. This is a fact-specific area worth professional advice.

Other state fiduciary guides

New York Form IT-205 · Pennsylvania Form PA-41 · Illinois Form IL-1041 · Ohio Form IT 1041 · New Jersey Form NJ-1041 · Georgia Form 501 · all states

Disclaimer: State filing thresholds, rates, and extension rules change — verify current requirements in the Form 541 instructions published by California Franchise Tax Board before filing. This page is general information, not tax advice. TaxFilingCenter is an IRS-authorized e-file provider for federal returns and does not provide legal or tax advice.