For Bay Area S-Corp, LLC, and partnership owners · 9 min read
Key Takeaways
- AB 150 lets California S-Corps, partnerships, and multi-member LLCs pay 9.3% California tax at the entity level — workaround for the federal $10K SALT cap
- For Bay Area pass-through owners with $200K+ of K-1 income, PTET typically saves $5K-$50K per partner per year in federal tax
- The election requires a June 15 deposit — greater of $1,000 or 50% of prior-year PTE tax — missed deposit voids the election entirely
- PTET is NOT beneficial for owners in low federal brackets, for entities with substantial passive losses, or for non-California residents in multi-state structures
- The election is annual — make it every year you want it; non-election years allow normal SALT-capped federal deduction
When the 2017 Tax Cuts and Jobs Act capped the federal deduction for state and local taxes at $10,000, Bay Area pass-through business owners faced an immediate disadvantage. A California S-Corp owner with $500K of K-1 income owed roughly $46K in California state tax — most of which became non-deductible at the federal level. California’s response was AB 150, signed in 2021, which lets pass-through entities elect to pay California tax at the entity level. The federal benefit: that entity-level state tax becomes deductible against federal taxable income, working around the SALT cap. For most Bay Area pass-through owners, the PTET election saves real money. This guide walks through the mechanics, the eligibility, the traps, and the situations where PTET costs more than it saves.
The Mechanics: How PTET Actually Works
Under California Revenue & Taxation Code §17052.10, an electing pass-through entity pays California state tax of 9.3% on the consenting owners’ “qualified net income” at the entity level. Each consenting owner then receives a refundable California state tax credit on their personal return equal to their share of the PTET paid.
The federal benefit comes through the IRS Notice 2020-75 framework: the entity-level PTET payment is deductible as a state tax on the entity’s federal return (not the owner’s). Owners get the same California credit they would have if they’d paid personally — but the deduction sits at the entity level, escaping the $10K SALT cap.
| Without PTET | With PTET |
|---|---|
| CA tax paid by owner personally | CA tax paid by entity (9.3% × QNI) |
| Owner claims SALT deduction up to $10K cap | Entity deducts full state tax federally; no SALT cap |
| Federal deduction limited | Federal deduction unlimited |
| Net effect: lose ~37% of CA tax to federal disallowance | Net effect: capture full federal deduction |
Who Benefits: The Math
PTET saves money for any pass-through owner whose California tax exceeds $10K (the SALT cap floor) and whose federal marginal rate makes the deduction valuable. For a Bay Area S-Corp owner with $500K of K-1 income at the 37% federal marginal rate, the math:
California tax on $500K K-1 income ≈ $46,500 (at 9.3% PTET rate). Federal deduction value: $46,500 × 37% = $17,200 of federal tax saved. The PTET election delivers approximately $17K of net annual savings on this profile.
For owners with $200K-$1M of K-1 income, PTET savings typically range from $5K to $80K per year. For owners above $1M, savings can exceed $150K. The election is one of the highest-ROI annual filings in California tax practice.
Bay Area Sweet Spot
PTET works best for Bay Area pass-through owners with stable, recurring K-1 income above $200K, federal marginal rate at 32% or higher, and minimal passive losses. A Pleasanton-based partnership generating $2M of K-1 net income across three partners typically captures $40K-$60K of combined annual federal savings via PTET. Milestone files PTET elections for every qualifying client.
The June 15 Deposit Trap
PTET requires a deposit by June 15 of the election year — the greater of $1,000 or 50% of the prior year’s PTE tax. Miss this deposit by even one day and the entire election is void for the year. The deposit is non-refundable insurance: if you elect PTET in 2025, you pay $1,000+ by June 15 even if the entity ends up with no net income.
We file the protective $1,000 deposit for every existing PTET-qualifying client by mid-May each year, with the final election made at year-end based on actual results. This eliminates the June 15 risk and gives the year-end flexibility to either confirm the election or simply let it lapse.
The June 15 PTET deposit deadline is the most expensive single date in California pass-through tax practice. Miss it and you forfeit five-figure or six-figure savings for the entire year — with no fix until the following election cycle.
Eligibility: Who Can Elect
PTET is available to S-Corps, partnerships, and multi-member LLCs taxed as partnerships. Single-member LLCs (disregarded entities), C-Corps, sole proprietorships, and trusts are not eligible.
Consenting owners must be individuals, fiduciaries, or estates — not other pass-through entities or C-Corps. Multi-tier structures (S-Corp owning interest in another S-Corp) require special analysis. The election is made by consenting owners on Form 3804; non-consenting owners can opt out without disqualifying the entity election.
When PTET Is NOT a Good Idea
PTET is not universally beneficial. Five scenarios where the election may cost more than it saves:
1. Low federal brackets: Owners in the 22% or 24% federal bracket capture less benefit from the deduction. Below 22%, the math can flip negative.
2. Passive losses: If you have substantial passive loss carryforwards offsetting the K-1 income, the PTET payment creates a real cash outflow with no corresponding federal benefit (because the loss already eliminated the tax).
3. Multi-state structures with significant non-California source income: PTET only covers California-source income. Out-of-state owners may receive less benefit and could face residence-state coordination issues.
4. NOL carryforward: If federal taxable income is already zero from NOLs, the additional PTET deduction creates a federal NOL with no current cash value.
5. AMT exposure: While AMT applies narrowly post-2018, certain high-deduction profiles still trigger it. PTET can interact with AMT positions.
Annual Recheck
Because PTET is an annual election, we run a “does PTET still help” analysis every November for our pass-through clients. About 5-10% of clients in any given year have shifted circumstances (passive losses, NOLs, state residency change, K-1 income drop) that make PTET marginal or negative. The check is cheap; the avoided cost from a wrong election is meaningful.
The Multi-State Complication
For Bay Area pass-through entities with operations in multiple states, PTET coordination gets complex. California PTET only covers California-source income. Other PTE-electing states (New York, New Jersey, Illinois, etc.) have their own elections, deposit deadlines, and credit mechanisms.
Owners residing in non-California states face residence-state credit issues — most states allow credit for taxes paid to other states, but the PTET mechanic creates interpretive complexity. The Multi-State Tax Commission has issued guidance, but inconsistent state implementations create real friction for cross-border owners.
How Milestone Handles PTET
Our annual PTET routine for clients:
April: Confirm prior-year PTE tax and consenting owners.
May: File protective $1,000 deposit (or larger if prior-year tax warrants).
August: Q3 projection — confirm election is still beneficial given YTD results.
November: Final election analysis; confirm or release deposit.
March (following year): File Form 3804 and Form 3893 with the entity return.
April (owner level): Claim PTET credit on Form 540 personal return.
For 30 PTET-electing clients, this routine takes about 40-60 hours annually. The cost is modest; the client savings are typically 20-40x the fee.
Frequently Asked Questions
I’m a Bay Area S-Corp owner with $400K of K-1 income. Should I elect PTET?
Almost certainly yes. Estimated annual savings: $13K-$17K depending on federal bracket and other deductions. The election fee and admin cost is $1K-$2K. The math is clearly positive for most owners in your profile.
I missed the June 15 deposit. Can I still elect for the current year?
No — the deposit deadline is jurisdictional. The election is forfeited for the current year. For next year, file the protective deposit by May 31 to be safe (we treat June 15 as a hard May 31 internal deadline). Some federal SALT workaround alternatives exist (charitable conservation, certain business structuring) but none replicate PTET’s breadth.
Does PTET affect my California estimated tax payments?
Yes, indirectly. The PTET credit you’ll claim on your personal return reduces your personal California tax liability — meaning your personal estimated tax payments can be reduced accordingly. We re-run California estimated tax projections after each PTET election to right-size personal payments.
I just moved out of California. Does PTET still help me?
Possibly — the entity-level deduction works regardless of where you reside. But your home state may not give you full credit for California PTET paid, creating partial double-taxation. We model this state-by-state for non-California-resident owners. Texas, Nevada, and Washington residents typically still benefit; New York and New Jersey residents face more friction.
Related Resources
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About the Author
Ronak Bhatt, CPA, MBA
Founder of Milestone Certified Public Accountants in Pleasanton, CA. Ronak leads tax strategy and advisory engagements for Bay Area high-net-worth families, business owners, and real estate investors. Active member of the AICPA and CalCPA, with deep experience in entity structuring, tax planning, IRC §469 passive activity rules, cost segregation, and partnership taxation.
This article is for general information and does not constitute tax, legal, or investment advice. Individual situations vary; please consult a CPA before making tax elections. Milestone CPAs is licensed in California and serves clients across the Bay Area and Tri-Valley.
