California Form 592 for Nonresident S-Corp Shareholders

Harper Tax CPA

California Form 592 for Nonresident S-Corporation Shareholders

Many nonresident S-corporation shareholders assume their California compliance is finished once the S-corporation files California Form 100S and pays California’s S-corporation franchise tax.

That assumption can be wrong.

If an S-corporation has California-source income and one or more nonresident shareholders, California may require a separate nonresident withholding analysis. This can involve Form 592-PTE, Form 592-Q, Form 592-B, and in some cases Form 592.

These withholding rules are separate from the entity-level California S-corporation tax reported on Form 100S.

For small S-corporations with owners living outside California, this is a common area where tax preparers miss a filing issue. A shareholder may receive a California Schedule K-1, have California-source income, and still need separate owner-level filing or withholding coordination.

What Is California Form 592?

California Form 592, Resident and Nonresident Withholding Statement, is part of California’s broader nonresident withholding system.

The Franchise Tax Board states that Form 592 is used to report withholding under California Revenue and Taxation Code Sections 18662 and 18664, including certain payments and distributions to domestic nonresident partners, LLC members, beneficiaries, and S-corporation shareholders. 1

However, for pass-through entity owner withholding, the more specific form is often Form 592-PTE, Pass-Through Entity Annual Withholding Return.

For taxable years beginning on or after January 1, 2020, the FTB states that a pass-through entity that paid withholding on behalf of a nonresident owner, or has been withheld upon, must use Form 592-PTE to report total withholding and allocate withholding to the correct owners. 2

In practical terms, California’s withholding forms help the FTB match withholding payments to the correct taxpayer. For S-corporations, that means the entity, the shareholder, the Schedule K-1, and the withholding forms need to be coordinated.

When Does California Nonresident Withholding Apply?

California generally requires nonresident withholding when a withholding agent makes California-source payments or distributions to a nonresident payee and the total California-source payments or distributions exceed the applicable threshold.

For pass-through entity withholding, the FTB generally describes nonresident withholding as applying at 7% of the California-source payment or distribution once the total payments or distributions exceed $1,500 during the calendar year, subject to exceptions, waivers, exemptions, and special rules. 2

For S-corporation shareholders, FTB Publication 1017 states that California law requires S-corporations and partnerships to withhold income taxes when distributing current or prior-year income to domestic S-corporation shareholders and partners. The publication also states that withholding is not required if distributions to an S-corporation shareholder or partner are $1,500 or less during the calendar year. 3

This means the analysis is not simply:

“Did the S-corporation file a California return?”

The better questions are:

Did the S-corporation have California-source income?
Did it have nonresident shareholders?
Were California-source distributions made to those shareholders?
Did an exemption, waiver, reduced withholding approval, or prior-year reporting certification apply?
Were the correct California withholding forms filed?
Was withholding properly allocated to the shareholder?

S-Corporation Shareholder Withholding vs. Form 100S Tax

California S-corporation taxation has two separate layers that often get confused.

The first layer is the entity-level California S-corporation tax. California taxes S-corporations with California-source income at 1.5%, subject to the minimum franchise tax rules. The FTB states that federal S-corporations subject to California law must file Form 100S and pay the greater of the minimum franchise tax or the 1.5% income or franchise tax. 4

The second layer is the shareholder-level tax issue. The S-corporation’s income generally passes through to the shareholder on Schedule K-1 (100S). A nonresident shareholder may need to file a California nonresident return if they have California-source income.

The Form 100S tax does not automatically satisfy the shareholder’s California tax obligation.

That is where many mistakes happen.

A nonresident shareholder may see that the S-corporation paid California tax and assume there is no more California tax exposure. But the 1.5% S-corporation tax is not the same as the shareholder’s personal California income tax on California-source pass-through income.

What Is Form 592-PTE?

Form 592-PTE, Pass-Through Entity Annual Withholding Return, is the pass-through entity withholding form used to report withholding for owners of pass-through entities, including S-corporation shareholders.

The FTB states that Form 592-PTE must be filed annually by January 31 of the year following the year for which withholding was required to be remitted. The entity lists the payees withheld upon, and the FTB credits the withholding to the payees’ accounts. 2

For an S-corporation with nonresident shareholders, Form 592-PTE can become relevant when the entity distributes California-source income and is required to withhold.

In addition to Form 592-PTE, the entity may need to use Form 592-Q to remit pass-through entity withholding payments during the year. Form 592-PTE is then used to report and allocate the withholding annually. 2

A simplified example:

An Arizona resident owns 100% of an S-corporation that performs services in California or has receipts sourced to California under California’s sourcing rules. The S-corporation files California Form 100S and reports California-source income on Schedule K-1 (100S). If the S-corporation makes distributions of California-source income to the nonresident shareholder, California withholding may need to be considered separately from the Form 100S filing.

The result depends on the facts, including income sourcing, distributions, exemptions, prior-year income treatment, PTET elections, and whether the owner has other California payment obligations.

What Is Form 592-B?

Form 592-B, Resident and Nonresident Withholding Tax Statement, is the withholding tax statement provided to the payee.

If California withholding is paid on behalf of a nonresident shareholder, Form 592-B is generally the form the shareholder uses to support the California withholding credit on their personal return.

California’s shareholder instructions for Schedule K-1 (100S) state that S-corporation shareholders should attach Form 592-B to their California tax return to claim the withholding credit and should not use Schedule K-1 (100S) itself to claim the withholding credit. 5

This is an important administrative point.

The K-1 may show California-source income, but the withholding credit generally needs to be supported through the proper withholding statement.

How California-Source K-1 Income Creates Owner-Level Filing Issues

For a nonresident shareholder, California-source S-corporation income can create a California filing obligation even if the shareholder does not live in California.

Common fact patterns include:

A nonresident owner living in Arizona, Nevada, Texas, Washington, Oregon, or another state
An S-corporation registered or doing business in California
Services performed in California or receipts sourced to California under California’s sourcing rules
California payroll, property, sales, or market-based sourcing issues
A shareholder who receives a California Schedule K-1 but assumes the entity-level Form 100S filing handled everything
A preparer who reports the entity return but does not fully analyze shareholder withholding or nonresident filing requirements

The shareholder’s California filing issue is separate from the S-corporation’s California return.

In many cases, the shareholder may need to file California Form 540NR to report California-source income and claim any available withholding credit.

Does California PTET Change the Form 592 Withholding Analysis?

California’s Pass-Through Entity Elective Tax, commonly called PTET or PTE tax, can reduce or shift how owners pay California tax, but it does not automatically eliminate every withholding issue.

California’s PTET is an elective entity-level tax regime that allows qualifying pass-through entities to pay tax at the entity level and pass a credit through to qualified owners. California has extended the PTET regime for taxable years beginning on or after January 1, 2026, and before January 1, 2031. 6

However, PTET should be analyzed separately from nonresident withholding.

Important questions include:

Did the S-corporation make a valid California PTET election?
Did the shareholder consent to participate?
Was the shareholder a qualified taxpayer for California PTET purposes?
Was the California-source income properly calculated?
Were PTET payments made correctly?
Does the PTET credit cover the shareholder’s California liability?
Does any separate withholding obligation still apply?

For 2026 through 2030 taxable years, California changed the consequence of a missed or underpaid June 15 PTET payment. The entity may still be able to make a valid PTET election, but the qualified taxpayer’s PTET credit can be reduced by 12.5% of the unpaid June 15 amount. 7

PTET can be valuable, but it should not be treated as a blanket substitute for Form 592-PTE, Form 592-Q, or Form 592-B analysis without reviewing the specific facts.

Prior-Year Income and Form 590-P

A separate issue can arise when a distribution relates to prior-year California-source income.

FTB Publication 1017 states that withholding is not required on distributions of prior-year income if that California-source income was previously reported on the shareholder’s California tax return. In that situation, the shareholder or partner may provide Form 590-P, Nonresident Withholding Exemption Certificate for Previously Reported Income, to certify that the income was previously reported. 3

This is a common issue for S-corporations that distribute accumulated income after the year in which the income was earned.

The key question is whether the distribution represents current-year California-source income, prior-year California-source income that was already reported, or another type of payment. The withholding treatment can change depending on that answer.

Common Preparer Mistakes With Form 592 and Nonresident S-Corp Shareholders

1. Assuming Form 100S solves everything

The California S-corporation return and franchise tax are only part of the compliance picture. The shareholder may still have California-source income, a nonresident filing obligation, and withholding issues.

2. Confusing entity tax with owner tax

The 1.5% S-corporation tax is not the same as the shareholder’s California personal income tax. A nonresident shareholder may owe California tax personally on California-source pass-through income.

3. Ignoring distributions

For domestic nonresident S-corporation shareholders, the withholding analysis often focuses on distributions of California-source income. FTB Publication 1017 specifically discusses withholding when S-corporations distribute current or prior-year income to domestic nonresident S-corporation shareholders and partners. 3

4. Missing Form 592-PTE

A pass-through entity may need to file Form 592-PTE to report withholding and allocate it to the correct owners. The FTB notes that Form 592-PTE is generally filed annually and used to list payees withheld upon. 2

5. Forgetting Form 592-Q payment remittance

Form 592-PTE is the annual reporting form, but the entity may also need to remit withholding payments using Form 592-Q. Missing the payment process can create a mismatch even if the annual reporting is later prepared.

6. Failing to issue Form 592-B

If withholding was paid, the shareholder generally needs Form 592-B to claim the withholding credit on their California return. The Schedule K-1 instructions state that shareholders should attach Form 592-B to claim the credit and should not use the K-1 itself to claim the withholding credit. 5

7. Treating PTET as a full replacement for withholding analysis

California PTET may reduce owner-level tax exposure, but it does not remove the need to understand Form 592-PTE, Form 592-Q, Form 592-B, K-1 reporting, and nonresident return filing.

8. Not reviewing California sourcing carefully

A nonresident shareholder’s California exposure depends heavily on whether the S-corporation has California-source income. For service businesses, remote work, multistate customers, and market-based sourcing can make the analysis more technical.

Example: Nonresident S-Corp Owner With California-Source Income

Assume a Nevada resident owns 100% of an S-corporation. The corporation provides consulting services and has receipts sourced to California under California’s sourcing rules. The S-corporation files California Form 100S because it has California-source income.

The S-corporation pays California’s 1.5% S-corporation tax. The shareholder receives a California Schedule K-1 showing California-source income.

The owner may still need to consider:

California Form 540NR filing
Whether California-source distributions triggered withholding
Whether Form 592-PTE should have been filed
Whether Form 592-Q payment remittance was required
Whether Form 592-B should have been issued
Whether California PTET was elected and properly paid
Whether prior-year income distributions were already reported
Whether Form 590-P applies for previously reported income
Whether a withholding exemption, waiver, or reduced withholding request applies

The correct answer is fact-specific. But the key point is that the California Form 100S filing does not end the analysis.

Why This Matters for Nonresident S-Corp Owners

California is detailed when it comes to nonresident income taxation. For S-corporation owners, problems often appear later when:

The FTB sends a notice
The shareholder cannot claim withholding because Form 592-B was not issued
The shareholder files a California return but the withholding was not allocated correctly
The S-corporation preparer did not analyze nonresident withholding
PTET was elected but not coordinated with the owner’s California return
The shareholder believes California tax was already handled at the entity level
Prior-year income was distributed but no one reviewed whether Form 590-P applied

These issues are especially common for small S-corporations with out-of-state owners because many general preparers focus on the federal S-corporation return and miss the California owner-level compliance layer.

Need Help With a California S-Corp and Nonresident Shareholder?

If your S-corporation has California-source income and one or more nonresident shareholders, the California filing requirements can go beyond simply filing Form 100S.

Harper Tax CPA helps S-corporation owners and small business taxpayers work through California nonresident issues, including:

California Form 100S
California-source income reporting
Nonresident shareholder Schedule K-1 issues
Form 592-PTE, Form 592-Q, and Form 592-B coordination
California PTET analysis
Multistate S-corporation tax compliance
California nonresident owner filing issues

California nonresident withholding depends on the shareholder’s residency, California-source income, distributions, exemptions, prior-year income reporting, waivers, PTET elections, and the specific facts of the S-corporation. This article is general information and should not be treated as a complete filing determination.

Need help with a California S-corporation and nonresident shareholder? Contact Harper Tax CPA to review your filing and withholding requirements.

FAQ: California Form 592 and Nonresident S-Corp Shareholders

Does a California S-corporation have to withhold for a nonresident shareholder?

It may. California withholding can apply when an S-corporation distributes California-source income to a nonresident shareholder, unless an exemption, threshold, waiver, reduced withholding approval, prior-year income certification, or other exception applies.

Is California Form 592 the same as Form 100S?

No. Form 100S is the California S-corporation income/franchise tax return. Form 592, Form 592-PTE, Form 592-Q, and Form 592-B relate to California withholding reporting and payment coordination.

Does the 1.5% California S-corporation tax cover the shareholder’s California tax?

No. The 1.5% entity-level S-corporation tax is separate from the shareholder’s personal California income tax on California-source pass-through income.

What is Form 592-PTE used for?

Form 592-PTE is used by pass-through entities, including S-corporations, to report and allocate withholding to owners. For S-corporations with nonresident shareholders, this form may be required when California-source income is distributed and withholding applies.

What is Form 592-Q used for?

Form 592-Q is generally used to remit California withholding payments. Form 592-PTE is then used to report and allocate the withholding annually.

What is Form 592-B used for?

Form 592-B reports withholding to the payee. A shareholder generally uses Form 592-B to claim the California withholding credit on their California return.

Does California PTET eliminate Form 592 withholding?

Not automatically. PTET may affect the overall California tax payment strategy, but the withholding analysis should still be reviewed separately based on the facts.

Can prior-year income distributions be exempt from withholding?

Possibly. If the distribution relates to California-source income that the shareholder already reported on a prior California tax return, Form 590-P may apply. The facts should be reviewed before assuming withholding is not required.

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Sources

Footnotes

California Franchise Tax Board, 2026 Instructions for Form 592: https://www.ftb.ca.gov/forms/2026/2026-592-instructions.html
California Franchise Tax Board, Pass-Through Entity Withholding: https://www.ftb.ca.gov/pay/withholding/pass-through-entity-withholding.html
California Franchise Tax Board, FTB Publication 1017, Resident and Nonresident Withholding Guidelines: https://www.ftb.ca.gov/forms/misc/1017.html
California Franchise Tax Board, 2025 Instructions for Form 100S S Corporation Tax Booklet: https://www.ftb.ca.gov/forms/2025/2025-100s-booklet.html
California Franchise Tax Board, 2025 Shareholder’s Instructions for Schedule K-1 (100S): https://www.ftb.ca.gov/forms/2025/2025-100s-k-1-instructions.html
California Franchise Tax Board, Help with Pass-Through Entity Elective Tax: https://www.ftb.ca.gov/file/business/credits/pass-through-entity-elective-tax/help.html
California Franchise Tax Board, Pass-Through Entity Elective Tax: https://www.ftb.ca.gov/file/business/credits/pass-through-entity-elective-tax/index.html