How does California pass-through withholding work for domestic nonresident owners?

Who withholds, on whom, and on what

The withholding agent is the pass-through entity itself: partnerships, limited liability companies not electing corporate treatment, S corporations, and estates and trusts distributing to nonresident beneficiaries (FTB Publication 1017; 2025 Form 592-PTE instructions). The payees the regime targets are domestic nonresident owners receiving distributions of California-source income: nonresident individuals, corporations that neither have a permanent place of business in California nor are qualified to do business here, partnerships and limited liability companies that neither have a permanent place of business in California nor are registered with the Secretary of State, and nonresident trusts and estates (Cal. Code Regs., tit. 18, section 18662-4(h)(3); FTB Publication 1017). The partnership and LLC entries on that payee list matter in tiered structures, because a distribution to an out-of-state upper-tier partnership is withholdable in the same way as a distribution to an individual. Residents, and entities with a sufficient California footprint, are taken out of the system by certification: a Form 590 exemption certificate covers California residents, entities qualified to do business in California or with a permanent place of business here, and tax-exempt organizations, along with the regulation's other categories, including insurance companies, IRAs and qualified pension and profit-sharing plans, California trusts and estates with California fiduciaries, and spouses covered by the federal military spouses residency relief rules (Cal. Code Regs., tit. 18, section 18662-4(h)(3)). A properly completed Form 590 relieves the entity of withholding for that owner until the owner's status changes, unless the entity knows the certificate is false, and the regulation expects the agent to look again when something like a change of address signals a possible change in status (Cal. Code Regs., tit. 18, section 18662-4(c)(1)). A nonresident owner who cannot certify an exemption can still apply to the Franchise Tax Board for a waiver on Form 588, most commonly on the ground that the owner has a current California filing history, and an approved waiver likewise switches the withholding off.

The base is the distribution of California-source income, not the K-1 income allocation. An entity that allocates substantial California income but distributes nothing during the year has no domestic pass-through withholding obligation for that year; the obligation attaches when cash or property moves to the owner, and only to the California-source portion of it. Undistributed income does not leave the regime, though; it is deferred, not exempt. A later distribution of prior-year California-source income is subject to withholding unless the owner certifies on Form 590-P that it already reported the income on its California return, and a distribution is treated first as a distribution of income and only then as a return of capital (FTB Publication 1017). The $1,500 threshold is a calendar-year cumulative trigger, not a per-payment one: withholding is optional on the first $1,500 of payments or distributions to a payee for the calendar year, and once the total passes that mark the 7 percent applies to the excess (Cal. Code Regs., tit. 18, section 18662-4(a)(2)). For an entity apportioning income both into and out of California, the source computation rides on the entity's own apportionment and sourcing work, which is where most practical difficulty lives; the withholding calculation is only as good as the California-source percentage behind it. The Franchise Tax Board accepts a reasonable estimate of the California-source ratio and generally accepts the prior year's ratio as reasonable (2025 Form 568 Booklet instructions; FTB Publication 1017), and income of a qualifying investment partnership that Rev. and Tax. Code section 17955 treats as income from sources outside California for a nonresident owner sits outside the withholding base altogether.

The compliance calendar

The forms run on their own cycle, and the January date is the one that gets missed. Withholding accumulated during the year is remitted with Form 592-Q by the quarterly due dates, April 15, June 15, September 15, and January 15 for the fourth quarter. The annual reconciliation, Form 592-PTE, is due January 31 of the following year, earlier than a calendar-year entity's income tax return, and it is the form that allocates the year's withholding owner by owner. Each owner then receives a Form 592-B stating the amount withheld on its behalf, which is the document the owner attaches to claim the credit on its own California return (Cal. Code Regs., tit. 18, section 18662-8(c)(2)). In tiered structures the withholding cascades by allocation rather than by refund: a lower-tier entity withholds on its nonresident owners, and an upper-tier pass-through that was itself withheld upon files its own Form 592-PTE to pass the credit through to all of its owners, residents and nonresidents alike, in proportion to their ownership interests (FTB Publication 1017; Cal. Code Regs., tit. 18, section 19002(b)). The allocation is not optional, because the alternative does not exist: no refund of tax withheld from payments to a pass-through entity is allowed, so the credit must keep moving until it reaches an owner that files a return and can use it (Cal. Code Regs., tit. 18, section 19002(b)). The related article on withholding credits and K-1 mismatches covers what happens when the amounts reported on these forms and the owners' returns fail to line up, which remains a common way this regime generates notices.

A brief word on lineage, because the rulemaking is still open and the regulatory text is thinner than the practice suggests. The regulation section reserved for domestic pass-through entity rules, Cal. Code Regs., tit. 18, section 18662-7, has no text; section 18662-4(a)(3) sets the rate at 7 percent of the gross payment or distribution amount, and the distribution-based computation described above rests on the Franchise Tax Board's published guidance rather than on a dedicated regulation (FTB Publication 1017). In 2017 the FTB circulated draft amendments that would base domestic withholding on each nonresident owner's distributive share of California-source income at the highest marginal rate, the approach several other states use. The three-member Franchise Tax Board authorized formal rulemaking in September 2021 and again on December 6, 2023, and its 2026 rulemaking calendar projected a notice of proposed rulemaking in March 2026 and adoption in July 2026; as of the FTB's regulatory activity page, last updated August 18, 2026, no notice of proposed rulemaking had been posted, and the rule in force is still 7 percent of actual distributions. If the amendments are adopted, the most recent proposal would apply them beginning January 1 of the year after filing with the Secretary of State, and the December 2022 draft would also replace Forms 592-Q and 592-PTE with a single annual Form 592, which would supersede the compliance calendar described above. The distributive-share, top-rate model already operates in California law for foreign partners: withholding on a foreign partner's allocable share of effectively connected California-source income at the maximum statutory rate, which the Franchise Tax Board states as 12.3 percent for non-corporate partners, plus 1 percent where a non-corporate foreign partner's taxable income exceeds $1 million, 8.84 percent for corporations, and 10.84 percent for banks and financial corporations, reported on the Form 592-F series, with no distribution required (Rev. and Tax. Code section 18666; 2025 Form 592-F instructions; 2025 Form 568 Booklet instructions). A separate and often-confused payment lives in the LLC rules: an LLC must pay tax on the distributive share of each nonresident member who has not signed a Form FTB 3832 consent to California filing, computed at the highest marginal rate for that member, and the Franchise Tax Board treats that nonconsenting nonresident member tax as distinct from the withholding requirements (2025 Form 568 Booklet instructions). An entity with both a Nevada individual and a foreign parent in its owner group is running two different withholding systems at once, and the labels matter.

What the credit is worth, and what it is not

Pass-through withholding is a prepayment, not a tax. The 7 percent is credited against the owner's actual California liability, computed on the owner's distributive share under the sourcing and apportionment rules, and the difference runs in both directions: an owner whose effective California rate on the income exceeds 7 percent owes the balance with its return, and an owner over-withheld relative to its liability recovers the excess only by filing. That last point is the quiet enforcement engine of the whole regime; a nonresident who wants the withheld money back must file the California nonresident return the withholding was designed to encourage. The filing path belongs to the ultimate taxable owner, though: a pass-through entity that was withheld upon cannot have the withholding refunded to it, and must instead allocate the credit through to its own owners (Cal. Code Regs., tit. 18, section 19002(b)). An election to pay the pass-through entity elective tax changes none of this; the Franchise Tax Board's guidance on the elective tax states that the election does not affect the 7 percent withholding requirement.

The entity's own exposure has a defined shape. Unless the failure was due to reasonable cause, an entity that should have withheld and did not is liable for the greater of the amount withheld or the owner's tax due on the payments, but never more than the amount that was required to be withheld, plus interest and information return penalties (Rev. and Tax. Code section 18668(a)). The liability also has an exit: if the owner later files its California return and pays the tax, the Franchise Tax Board may reverse the withholding liability on the entity's written request, although the information return penalties and interest remain (Cal. Code Regs., tit. 18, section 18662-8(d)(2)). That reversal procedure is often the back end of the audit conversation in a failure-to-withhold case, and it is why the Form 590 and Form 588 file is worth maintaining with the same discipline as resale certificates on the sales tax side: the certificates on hand at payment time are what stand between the entity and someone else's tax, and the owner's filing record afterward is what shrinks the bill when the certificates were not there.

Practice notes

Three errors recur in this area. The first is treating the domestic regime as distributive-share based, usually from a memo written against the pending proposal or by analogy to other states, which produces withholding in years with no distributions and, worse, its absence in high-distribution years when someone assumed the K-1 controlled. The distributive-share approach is a pending Franchise Tax Board proposal, not current law, and the sound course is to watch the rulemaking rather than anticipate it. The second is the calendar: Form 592-PTE's January 31 due date arrives before most tax departments have opened the compliance season, and the fourth-quarter 592-Q on January 15 is earlier still. The third is the credit plumbing in tiered structures, where withholding done correctly at the bottom tier never reaches the people paying tax because an intermediate entity never filed the 592-PTE that passes the credit through; the money sits with the Franchise Tax Board while the ultimate owners receive notices for underpayment. On the planning side, the waiver and exemption machinery is underused: owners with current California filing histories may qualify for Form 588 waivers, which generally run for twenty-four months, while a waiver granted to a newly admitted owner expires at the end of the calendar year following admission and is renewed only on the owner's own California filing history or current-year estimated payments (Cal. Code Regs., tit. 18, section 18662-4(l)(5)(D)); a reduced-withholding request on Form 589 is the alternative where the owner's California tax on the distribution will be less than 7 percent of it, and a nonresident owner receiving a distribution of prior-year income it already reported certifies that on Form 590-P, which the entity keeps in its records; and the sound practice for a California-registered or California-based entity in an ownership chain is to give Form 590 to the lower-tier entities that distribute to it, rather than absorb withholding that, for a pass-through owner, cannot be refunded and must be allocated on to its own owners (Cal. Code Regs., tit. 18, sections 18662-4(c)(1) and 19002(b)). And because the entire computation keys off the entity's California-source determination, a sourcing position change, a new market-based sourcing analysis, an apportionment factor shift, should trigger a same-day look at the withholding settings, not a discovery at the following January's reconciliation. G&G State Tax Group provides California pass-through withholding analysis, including exemption, waiver, and tiered-entity credit planning, alongside its state and local tax practice.