Is the California PTET Worth It for Your S-Corp? (2026 Guide)

By Tax Shack | May 2026 | Los Angeles, CA

If you own an S-Corp in California, there's a tax strategy with a June 15th deadline that could save you thousands this year, and most small business owners have never heard of it.

It's called the PTET, or Pass-Through Entity Tax. Here's what it is, how it works, and whether it makes sense for your business.

What Is the California PTET?

The Pass-Through Entity Tax is an elective tax strategy available to S-Corporations, partnerships, and multi-member LLCs in California. When your business elects PTET, it pays a 9.3% elective tax to the Franchise Tax Board, on top of the standard 1.5% S-Corp tax.

That might sound like more taxes, not less. So why would anyone do this?

Because that 9.3% payment comes off your business's net income, which lowers your adjusted gross income, which reduces your personal federal income taxes. In most cases, the PTET essentially replaces your personal state estimated tax payments. You're just paying them through the business instead, and getting a federal deduction in the process.

Is the PTET Worth It for Your S-Corp?

Generally yes…. if your S-Corp is profitable.

Here's a quick example: Say your S-Corp brings in around $215,000 in net income. Your PTET would be roughly $20,000. If your effective federal tax rate is around 33%, that deduction saves you approximately $6,600 in federal taxes.

The more profitable your business, the bigger the benefit. If your net income is lower, the math still works, it's just a smaller dollar amount saved.

This strategy is not beneficial if your S-Corp is running at a loss or barely breaking even.

The 3 Deadlines You Can't Miss

1. Make the Initial Election by June 15, 2026

To elect the PTET for 2026, you need to make a payment to the FTB by June 15, 2026.

• First time electing? Your minimum payment is $1,000.

• Elected PTET in 2025? You need to pay 50% of what you paid last year. If your 2025 PTET was $10,000, you owe $5,000 by June 15.

New for 2026: If you miss the June 15 deadline, you can still elect, but your credit gets reduced by 12.5% of the pro-rata portion that was due. Missing it isn't a total loss, but it's not ideal.

2. Make Your Second Payment Before December 31, 2026

This is the big one. If you miss the December 31st deadline, you lose the entire tax benefit for 2026 and have to wait until next year.

Example: You paid the $1,000 initial election in June. Your business ends up with $100,000 in net income for the year, making your total PTET $9,300. You'll owe the remaining $8,300 before December 31st to lock in the deduction.

3. File Form FTB 3804 by March 15, 2027

Your tax preparer files Form FTB 3804 with your S-Corp tax return and pays any remaining balance owed. Due date: March 15, 2027.

What This Means for LA Small Business Owners

If you're running a profitable S-Corp in Los Angeles, whether you're in construction, retail, services, or anything else, the PTET is one of the most straightforward tax strategies available to you right now. The deadline is coming up fast, and it's the kind of thing that's easy to miss if no one's watching your calendar.

At Tax Shack, our CTEC-certified tax preparers work with LA small business owners year-round to make sure strategies like this don't fall through the cracks. We'll calculate whether PTET makes sense for your numbers, handle the payments, and file the necessary forms.

Call us or stop by our LA office before June 15th — we'll walk you through it.

PTET Quick-Answer FAQ

What businesses qualify for California PTET? S-Corporations, partnerships, and multi-member LLCs in California.

What's the PTET election deadline for 2026? June 15, 2026 for the initial election. December 31, 2026 for the second payment.

How much can I save with PTET? It depends on your net income and federal tax rate. A $20,000 PTET at a 33% effective rate saves about $6,600 in federal taxes.

What if I've never elected PTET before? First-timers pay a minimum of $1,000 by June 15 to make the election. Your tax preparer can help calculate the right second payment before year-end.

What form is filed for California PTET? Form FTB 3804, filed with your S-Corp tax return by March 15.