California PTET: The SALT Cap Workaround for Bay Area Pass-Through Owners

If you own a piece of a Bay Area S-corp or partnership and you wrote a six-figure check to the California Franchise Tax Board last year, your 2025 federal return probably let you deduct about $10,000 of it. The other ninety-something thousand evaporated against the SALT cap. That math has been the rule for every pass-through owner in California since 2017, and the One Big Beautiful Bill Act (OBBBA, Public Law 119-21, signed July 4, 2025) only nudged it for a narrow band of filers.

The fix has existed since 2021 and it is hiding in plain sight: California's Passthrough Entity Tax, or PTET, established by AB-150. By electing PTET, your S-corp or partnership pays California tax at the entity level (where there is no SALT cap), takes the full deduction federally, and passes a refundable California credit through to each owner. For a Bay Area owner with $500K of pass-through income, the election typically saves $15K to $20K in federal tax every year it's made.

SVT prepares the PTET election, Form 3804, and the K-1 credit reporting for our partnership and S-corp clients every year. This post walks through the rule, the deadlines, who qualifies, and a worked example so you can see whether the math works for your entity.

The SALT Cap Problem in Plain English

The Tax Cuts and Jobs Act of 2017 capped the individual federal itemized deduction for state and local taxes at $10,000 per return. Property tax, state income tax, and local tax all share that single bucket. Before TCJA, a San Jose homeowner with $30K of property tax and $80K of California income tax wrote off the full $110K. After TCJA, that same person writes off $10K.

OBBBA in 2025 raised the cap to $40,000 for filers below an income phase-out threshold. Treasury and IRS guidance implementing the phase-out mechanics is still rolling out, so confirm the current-year specifics before relying on them. For a typical Bay Area pass-through owner with seven-figure household income, the cap increase phases out entirely, and the effective cap stays at $10K for the people who pay the most state tax. The TCJA cap was scheduled to sunset after 2025; OBBBA extended the cap regime and adjusted the threshold rather than letting it revert.

The result: a partner in a Palo Alto consulting firm earning $750K of K-1 income pays roughly $69,750 of California tax on that income at the 9.3% bracket, and federally deducts about $10K of it. The remaining $59,750 of state tax provides zero federal benefit. At a 37% federal bracket, that lost deduction costs the partner roughly $22,000 in extra federal tax every year.

What the PTET Workaround Does

California enacted AB-150 in 2021, joining roughly three dozen other states that built a legislative workaround to TCJA's SALT cap. The mechanism rides on the IRS's blessing in Notice 2020-75, which confirmed that state tax paid by a pass-through entity at the entity level is fully deductible as a business expense and is not subject to the individual SALT cap under IRC §164(b)(6).

Mechanically, the PTET election does three things:

1. The entity pays the state tax. The S-corp or partnership elects PTET and writes a check to California for 9.3% of each electing owner's distributive share of qualified net income.
2. The entity deducts the payment federally. The PTET payment shows up on the federal entity return (Form 1120-S or 1065) as a deductible state tax expense. It reduces the entity's federal taxable income dollar-for-dollar before the income flows to K-1s.
3. The owner gets a refundable California credit. The K-1 reports each electing owner's share of PTET paid. The owner reports their full distributive share of income on the California return, then claims a refundable credit equal to the PTET paid on their behalf. State outcome is identical; federal outcome is a much bigger deduction.

The PTET rate is a flat 9.3% regardless of the owner's personal California bracket. For top-bracket owners (12.3% or 13.3% personal rates), there is a small mismatch where the owner still owes a sliver of California tax personally beyond what the PTET covered. For owners in lower brackets, the PTET overpays the state tax and the excess credit refunds to the owner.

Election Timing and the Two Deposit Rule

Three deadlines control whether a PTET election is valid for a given tax year:

1. June 15 prepayment preserves eligibility. For tax years 2022 and forward, the entity must prepay at least the greater of $1,000 or 50% of the prior year's PTET by June 15 of the current tax year. Miss this deadline by a single day and the entity is disqualified from electing PTET for the entire year. There is no late-filing remedy. The prepayment alone is not the election; it preserves the option. The election is complete only when Form 3804 is filed with the entity's California return.
2. March 15 balance payment. The remaining PTET balance for the year is due by the entity's original tax-return due date (March 15 for calendar-year S-corps and partnerships).
3. Annual election on the return. The election is made by filing Form 3804 with the entity's California return. The election is irrevocable once made for that year, and it must be re-elected every single year. There is no continuing election.

The June 15 prepayment requirement traps brand-new entities and entities whose owners change year to year. For an entity that did not elect PTET in the prior year, the prepayment is at least $1,000 (a relatively modest hurdle). For an entity that elected last year, the prepayment is half of last year's PTET liability, which can be a very large number for profitable firms.

Practical SVT planning rule: if there is any chance you will want to elect PTET this year, pay $1,000 (or more, sized to your expected income) by June 15. That single payment preserves your option through the rest of the year. We file the actual Form 3804 election with your S-corp or partnership return the following March.

Worked Example: Bay Area S-Corp Owner

Consider a single-owner S-corp based in Sunnyvale. The owner takes a reasonable W-2 salary of $200K (with payroll taxes and California withholding handled normally) and the S-corp passes through $500K of additional ordinary business income on the K-1. The owner is in the 37% federal marginal bracket and the 12.3% California marginal bracket.

Without PTET election

Item	Amount
K-1 pass-through income	$500,000
California state tax on that income (~9.3%)	$46,500
Federal SALT deduction allowed	$10,000 (cap)
Lost federal deduction	$36,500
Federal tax cost of lost deduction (37%)	$13,505

With PTET election

Item	Amount
K-1 pass-through income (before PTET)	$500,000
PTET paid by S-corp (9.3% of $500K)	$46,500
Federal deduction at entity level (full)	$46,500
K-1 ordinary income after PTET deduction	$453,500
Federal tax saved (37% × $46,500)	$17,205
California credit passed to owner on K-1	$46,500 (refundable)
Net California outcome	Substantially equivalent*

The owner gets the full federal deduction at the entity level instead of the capped $10K personal deduction, and the California credit largely washes out the state-tax effect of the entity payment. *For owners in the 12.3% or 13.3% top brackets, the 9.3% flat PTET rate leaves a residual personal California liability of roughly 3% to 4% of qualified net income that must still be paid through personal estimates. Net federal result for this example: roughly $17,000 in annual federal savings for one S-corp election, year after year, for the life of the entity.

The PTET election does not change a single dollar of California revenue. The Franchise Tax Board still collects the same tax on the same income. The only thing that changes is which line of which federal form gets the deduction. California built the workaround intentionally to repatriate the federal benefit its high-tax residents lost in 2017.

Who Qualifies, and Who Does Not

Qualifying entities:

• S-corporations
• General partnerships
• Limited partnerships and limited liability partnerships
• LLCs taxed as partnerships
• LLCs taxed as S-corporations

Entities that do not qualify:

• Sole proprietorships (Schedule C), because there is no entity to pay the PTET
• Single-member LLCs filing as disregarded entities
• C-corporations, which already deduct state tax at the entity level under the corporate code
• Publicly traded partnerships

Qualifying owners (each owner elects in or out individually):

• Individuals
• Trusts and estates
• Other pass-through entities that are direct partners (with their own PTET treatment downstream)

Non-qualifying owners:

• Disregarded entities
• Partnerships that are not also taxed as PTEs themselves
• Tax-exempt organizations and pension trusts (no California tax liability to credit against)

The election is owner-by-owner, not entity-wide. An S-corp with three shareholders can have two elect in and one opt out. The PTET payment is calculated only on the electing owners' shares of qualified net income.

Coordination with Personal Estimated Taxes

One detail that catches owners every year: PTET counts as California tax paid on behalf of the owner. So if your S-corp paid $46,500 in PTET on your behalf and your total California liability for the year is $52,000, you only owe an additional $5,500 personally. Your personal quarterly estimated tax payments to California should drop accordingly.

This is easy to forget in the year of the first PTET election. The default behavior in most tax software is to keep computing personal CA estimates as if PTET did not exist, which leads owners to massively overpay California and earn a refund the following spring. Our planning sessions explicitly recalibrate quarterly estimates the moment PTET goes live. The same coordination matters for federal estimates too: if the federal deduction lowers AGI by $46,500, the owner's federal estimate baseline should be redone. See our estimated tax payments guide for the full quarterly math.

The Gotchas We See Most Often

1. Missed June 15 prepayment. Single most common PTET failure. New owners, new accountants, or simple calendar oversight kills the election for the full year. Set a recurring May 15 calendar reminder a month before the deadline so the wire has buffer time.
2. Disregarded SMLLC owner. If your S-corp shareholder is a single-member LLC, the SMLLC does not qualify as an electing owner. Restructure ownership to an individual or a multi-member entity before the year you want to elect.
3. Mid-year ownership changes. Adding or removing an owner mid-year creates messy allocation issues. PTET is calculated on qualified net income for each electing owner's share for the period they were an owner. Document everything contemporaneously.
4. Trust beneficiary mismatches. Trusts can be electing owners, but the credit flows to the trust, not the beneficiary. If the trust distributes income to a beneficiary in California, the beneficiary cannot use the PTE credit on their own personal return. Plan trust distributions accordingly.
5. Non-California source income inside the entity. PTET applies only to qualified net income, which is generally California-source for non-resident owners and worldwide for residents. Multi-state entities need careful sourcing to compute the PTET correctly.
6. Forgetting it is an annual election. PTET must be elected and filed every single year. There is no rolling election. Build it into your annual tax-prep checklist alongside W-2s and 1099s.

How OBBBA 2025 Affects PTET

OBBBA made several changes relevant to pass-through owners. The headline change was raising the personal SALT cap to $40K (with phase-out). That bumps the dollar value of the PTET benefit slightly lower at the margin for some owners, but for any Bay Area filer above the OBBBA phase-out threshold (households with income well into seven figures), the SALT cap effectively remains at $10K and PTET is just as valuable as before.

What OBBBA did not do: it did not repeal the PTET workaround. It did not modify IRC §164(b)(6) or Notice 2020-75. State-level PTETs in California, New York, New Jersey, and the other roughly three dozen states that enacted them remain fully effective. Congress considered killing PTETs as a revenue raiser during OBBBA negotiations and ultimately did not. The workaround is durable for now.

California has not signaled any intent to sunset PTET. The state collects the same revenue with or without the election; the only loser is the federal Treasury. Expect PTET to remain a permanent fixture of Bay Area pass-through planning.

What Goes Wrong When Owners DIY It

The single most common PTET failure we see at intake: an entity that "elected" by paying $1,000 on June 15 but never filed Form 3804 with the California return. Without the actual election on the return, the prepayment is just an estimate that gets refunded, and the federal deduction does not happen. The cost for a $500K K-1 owner is roughly $17,000 of forgone federal savings per year of missed election. DIY tax software handles the entity return but does not always prompt the PTET election or compute the credit pass-through to each owner's K-1 correctly. That is the moment an engagement pays for itself.

Related Planning Decisions

PTET interacts with several other entity decisions that matter for Bay Area owners. If you are still on a Schedule C and considering whether to incorporate, the PTET benefit is one of several reasons that the math sometimes favors converting to an S-corp once income hits the $150K+ range. See our guides on S-corp vs. LLC selection and converting an LLC to an S-corp for the threshold math.

For Bay Area startup founders running a profitable services entity alongside a venture-backed C-corp, PTET applies to the services entity but not the C-corp. We coordinate the planning across both. See our startup founder tax page for the full multi-entity treatment.

And for any 2026 planning, the broader California tax changes for 2026 overview puts PTET in context with the other state-level moves worth knowing.

How SVT Handles PTET for Clients

For every partnership and S-corp client we prepare, PTET is part of the standard workflow:

• March-April: We model whether PTET is worth electing for the upcoming year based on each owner's expected K-1 income and federal bracket.
• May: We calendar the June 15 prepayment and tell you exactly how much to wire to the FTB.
• December: We project the year-end PTET liability and recalibrate your personal CA quarterly estimate.
• February-March: We file Form 3804 with your entity return, issue PTE-credit-bearing K-1s to all electing owners, and reconcile the credit on each owner's personal return.

It is one of the highest-payoff routine moves available to Bay Area entity owners. The annual federal savings often more than cover the cost of professional preparation by themselves.

If your entity has not been electing PTET, or if you are not sure whether it is set up correctly, we can review your last two years of pass-through returns and tell you in one meeting whether the election is in place, whether the credit was properly claimed on each owner's personal return, and whether there is a meaningful refund opportunity from amending. Book a complimentary consultation and we will walk through your specific entity, your owners, and whether the election makes sense going forward. Our entity tax services page covers the full scope of what we handle for partnerships and S-corps.