By Daniel Sabet · CFO & Financial Advisor, GreenGrowth CPAs · Tax Strategy & Growth Planning · Los Angeles, CA | Published August 2026 | Tax Advisory
If your entity missed the June 15 payment this year, you probably assume the California PTET election is gone for 2026. That was true for four years. It stopped being true this year. Under SB 132, a missed or short June 15 prepayment no longer voids the election. The election survives. Instead each owner’s credit falls by 12.5% of that owner’s share of the shortfall. Plenty of California business owners wrote the election off in June and never revisited it.
QUICK ANSWER
The California PTET election is available for tax years 2026 through 2030 under SB 132. Missing or underpaying the June 15 prepayment no longer disqualifies the entity. Instead each owner’s credit falls by 12.5% of that owner’s pro rata share of the unpaid amount. The required prepayment is still the greater of 50% of the prior year’s elective tax or $1,000, and the tax rate is still 9.3% of qualified net income. This relief starts with 2026. It does not rescue a missed 2025 payment.
California PTET Under SB 132: At a Glance
What Changed and What Did Not
- The cliff became a penalty: Before 2026, missing June 15 by a dollar killed the election. Now the election stands and a credit reduction applies instead.
- The haircut is narrow: The 12.5% applies to each owner’s share of the shortfall, not to the entire credit. A $40,000 shortfall costs $5,000 of credit across the owners.
- Nothing else moved: The prepayment is still the greater of 50% of prior-year elective tax or $1,000, and the rate is still 9.3% of qualified net income.
- 2025 gets no relief: An entity that missed June 15, 2025 remains ineligible for that year. The change starts with tax years beginning in 2026.
- No exception for a big prior year: The FTB states there are no statutory exceptions when an unusually high prior year inflates the required payment.
- It creates a real choice: An entity expecting lower income can underpay deliberately, take the haircut, and keep the cash. Whether that wins is arithmetic, not a rule of thumb.
- GreenGrowth’s role: We model the election against your actual numbers before the return goes in. Book a PTET election review →
What SB 132 Changed About the California PTET
The original regime ran from 2021 through 2025 and carried a brutal rule. An entity had to pay the greater of 50% of the prior year’s elective tax or $1,000 by June 15. Miss it by a dollar, or by a day, and the election vanished for the entire year.
That produced outcomes nobody defended. A profitable partnership could lose six figures of federal deduction because a controller noted the wrong date. No cure existed. No late payment path, and no reasonable cause argument.
SB 132 extended the program for tax years 2026 through 2030 and replaced that cliff. From 2026, a missed or short June 15 payment leaves the election intact. The consequence moves to the owner’s credit instead.
How the 12.5% Reduction Actually Works
This is where most summaries get it wrong. The reduction is not 12.5% of the credit. It is 12.5% of each owner’s pro rata share of the amount that was due by June 15 and not paid.
Take a partnership with three equal partners that owed $90,000 by June 15 and paid nothing. Each partner’s share of the shortfall is $30,000. So each partner’s credit falls by $3,750, or 12.5% of that $30,000. The total hit is $11,250, not 12.5% of the whole California PTET credit.
Partial payment scales the same way. If the entity owed $100,000 and paid $60,000, the shortfall is $40,000 and the credit reduction is $5,000 spread across owners by share.
💬 The Conversation Worth Having
The most valuable version of this conversation happens with an owner who already gave up. They missed June 15, someone told them the election was dead for the year, and they moved on. Under the old rule that advice was correct. It is not correct for 2026, and nobody sends a follow-up email to correct guidance that was right when it was given. So the deduction is sitting there, still claimable on a timely filed return, and the only thing standing between the client and it is that nobody revisited the question.
Missed June 15 and assumed the election was gone? It probably is not.
Why the California PTET Still Matters After OBBBA
Some owners assume the higher federal SALT cap made the election irrelevant. That is worth testing rather than assuming, because two things push against it.
First, the raised cap phases down for higher-income households. So a business owner with substantial pass-through income often lands back near the old limitation. Second, the election works at entity level rather than through your itemized deductions. The entity deducts the elective tax as a business expense, which lowers the income on each Schedule K-1.
That second point carries more weight than people expect. The benefit runs through the K-1, so it reaches owners who take the standard deduction as well as those who itemize. A personal SALT calculation tells you nothing about whether the entity-level election helps.
One Structural Risk to Track
California’s program is tied to the federal SALT limitation. If Congress repeals that limitation, the state program ends for tax years beginning after the repeal. So treat the 2030 sunset as an outer boundary rather than a guarantee. Revisit the election annually rather than setting it once.
The California PTET Choice Nobody Had Before
Removing the cliff created something more interesting than relief. It created an option, and the option matters most for entities with volatile income.
The June 15 payment is calculated from the prior year. So an entity coming off a strong year owes a large prepayment even when the current year looks weaker. Under the old rule you paid it or lost the election. The FTB is explicit that no statutory exception exists.
Now a second path exists. Underpay deliberately, accept the 12.5% haircut on the shortfall, and keep the cash working in the business rather than parked with the state until you file.
▶ Pay in Full or Underpay Deliberately
| Factor | Pay in Full | Underpay Deliberately |
|---|---|---|
| Credit | Full credit preserved | Reduced by 12.5% of the shortfall |
| Cash | Overpayment sits with the state until you file | Cash stays in the business |
| Best fit | Stable or rising income, comfortable cash position | Prior year was unusually strong, current year materially weaker |
| The math | No downside beyond opportunity cost on the cash | Compare the 12.5% haircut against your real cost of capital |
Underpayment may also carry penalties and interest separate from the credit reduction. Model both before deciding.
Paying in full is still the better outcome in most cases. The point is that it is now a calculation rather than a rule, and the calculation only works if somebody runs it.
What to Do Now About Your 2026 Election
June 15 has passed for 2026, so the question splits three ways depending on what your entity did.
You paid in full. Nothing to fix. Make the election on a timely filed return and pay the balance by the original due date, ignoring extensions.
You underpaid or paid nothing. The election is still available. Work out the shortfall, calculate the credit reduction by owner, then confirm the election still nets positive. In most cases it does, since the haircut applies only to the shortfall.
You were told the election was dead. Get a second look. That advice was correct under the pre-2026 rule and wrong now. This is the most common situation we see.
Planning for June 15, 2027
Next year’s prepayment gets calculated from your 2026 elective tax. So a strong 2026 sets up a large payment next June. Model that now rather than in May. If 2027 looks weaker, price the deliberate underpayment path properly rather than deciding under time pressure.
Confirm current mechanics directly with the California Franchise Tax Board, since guidance on the new regime continues to develop.
How GreenGrowth CPAs Models the California PTET
The election is not a default yes or a default no. It depends on the owners, not only the entity, and that is the part generic advice misses.
We model it at owner level. Each owner sits differently on the federal SALT phase-down, holds a different share, and may itemize or take the standard deduction. So the same election can be strongly positive for one partner and neutral for another. Averaging across the group hides that.
What a California PTET Review Covers
Three things. Whether the election nets positive for your owners after any credit reduction. What the June 15, 2027 payment looks like based on this year’s figures. And whether deliberate underpayment fits your cash position, which is a genuine question.
You can see the wider practice on our tax planning and compliance page.
KEY TAKEAWAYS
- ›Under SB 132, a missed or short June 15 prepayment no longer voids the election. That was true through 2025 and stopped being true for tax years beginning in 2026.
- ›The 12.5% reduction applies to each owner’s share of the shortfall, not to the whole credit. A $40,000 shortfall costs $5,000 of credit across the owners.
- ›Nothing else changed. The prepayment is still the greater of 50% of prior-year elective tax or $1,000, and the rate is still 9.3% of qualified net income.
- ›The election works at entity level through the K-1, so it can help owners who take the standard deduction. A personal SALT calculation does not answer the question.
- ›Removing the cliff created a planning option. An entity coming off a strong prior year and facing a weaker current year can underpay deliberately and weigh the haircut against its cost of capital.
- ›The relief starts with 2026. An entity that missed June 15, 2025 remains ineligible for that year, and the program is tied to the federal SALT limitation staying in place.
California PTET Questions Answered
The June 15 Rule
I missed the June 15 payment. Can I still make the California PTET election?+
Yes, for tax years beginning on or after January 1, 2026. SB 132 removed the rule that a missed or short prepayment voided the election. The election stands on a timely filed return. Instead each owner’s credit falls by 12.5% of that owner’s pro rata share of the amount due but not paid.
How is the 12.5% credit reduction calculated?+
It applies to the shortfall, not the full credit. Take a partnership with three equal partners that owed $90,000 by June 15 and paid nothing. Each partner’s share of the shortfall is $30,000, so each partner’s credit falls by $3,750. If the entity owed $100,000 and paid $60,000, the shortfall is $40,000. The total credit reduction is then $5,000 across the owners.
Does this relief apply to a missed 2025 payment?+
No. The change applies to tax years beginning on or after January 1, 2026. An entity that missed or underpaid the June 15, 2025 prepayment remains ineligible to elect for the 2025 tax year under the prior rule.
Mechanics and Amounts
How much is the June 15 prepayment?+
The greater of 50% of the prior year’s elective tax or $1,000. SB 132 did not change that calculation. It looks backward, so an entity coming off a strong year owes a large payment even when the current year looks weaker. The FTB states there are no statutory exceptions.
What is the California PTET rate?+
The elective tax is 9.3% of qualified net income, unchanged by SB 132. The entity pays that tax and deducts it as a business expense. That reduces the income reported on each owner’s Schedule K-1. The owner then claims a credit against California tax, subject to any reduction from a June 15 shortfall.
How long does the California PTET election last?+
SB 132 makes the election available for tax years beginning on or after January 1, 2026 and before January 1, 2031. You make the election annually rather than once. The program also depends on the federal SALT limitation remaining in place, and would end for tax years beginning after a repeal.
Deciding Whether to Elect
Is the election still worth it with the higher SALT cap?+
Often yes, and it needs modeling rather than assumption. The raised cap phases down for higher-income households, so many business owners land back near the old limitation. The election also works at entity level through the K-1 rather than through itemized deductions. So it can help owners who take the standard deduction.
Should I ever underpay the June 15 amount on purpose?+
It is now a real question rather than an automatic no. The prepayment is based on the prior year. So an entity coming off a strong year, facing a weaker one, can send cash to the state that it only recovers at filing. Weigh the 12.5% haircut against your genuine cost of capital. Penalties and interest may apply separately.
Working With GreenGrowth CPAs
How does GreenGrowth CPAs review a PTET position?+
We model it at owner level rather than entity level, because each owner sits differently on the federal SALT phase-down. Some itemize and some take the standard deduction. The review covers whether the election nets positive after any credit reduction, what the following June 15 payment looks like, and whether deliberate underpayment fits the cash position.
Missing June 15 Used to End the Election. It Does Not Anymore.
Book a PTET election review. We calculate the credit reduction at owner level and tell you whether the election still nets positive for 2026.
Book Your Free Election Review →
GreenGrowth CPAs · Tax Advisory Team
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