Q2 Estimated Taxes Are Due June 16th — Here's What Bay Area Business Owners Need to Pay
Q2 2026 estimated taxes are due June 16th. Miss it and penalties start stacking. Here's what Bay Area business owners need to pay, how California's front-loaded schedule works, and how to pay.
If you're self-employed, run an S-Corp, own an LLC, or have any income that isn't subject to automatic withholding — you're required to pay estimated taxes four times per year. And the Q2 deadline is coming up.
Q2 2026 estimated taxes are due June 16th.
Miss it, and you're not just paying what you owe — you're paying penalties and interest on top. The IRS isn't flexible about this one.
Here's what you need to know.
Why Estimated Taxes Exist
When you're an employee, your employer withholds taxes from every paycheck and sends them to the IRS automatically. You never think about it.
When you're a business owner, freelancer, or investor, nobody's doing that for you. The IRS still expects to receive your tax money throughout the year — so they created a quarterly estimated payment system. You calculate what you owe, and you pay it four times a year instead of once.
If you don't pay enough throughout the year, the IRS charges an underpayment penalty — currently 7% per year on the underpaid amount. It's not catastrophic, but it's money you don't need to be giving away.
The 2026 Estimated Tax Deadlines
All four deadlines for the 2026 tax year:
- Q1: April 15, 2026 — already passed
- Q2: June 16, 2026 — coming up
- Q3: September 15, 2026
- Q4: January 15, 2027
Yes, Q2 covers only two months (April and May income) while Q1 covers three. That's always been a quirk of the IRS calendar. Don't let the shorter window catch you short.
How Much Should You Pay?
There are two safe-harbor methods that protect you from underpayment penalties. You only need to meet one of them.
Method 1 — Pay 100% of last year's tax. Add up your total federal tax liability from your 2025 return and divide by four. Pay that amount each quarter. If your 2025 adjusted gross income was over $150,000 (which it likely is for many Bay Area business owners), the threshold bumps to 110% of last year's tax.
Method 2 — Pay 90% of this year's estimated tax. Calculate what you expect to owe for 2026, multiply by 90%, and divide by four. This works well if your income has dropped significantly from last year.
Most business owners use Method 1 because it's simpler. You're essentially making up for your 2025 taxes in installments throughout 2026. If your 2026 income ends up higher than expected, you'll owe a balance in April 2027 — but no penalty.
We wrote about this in detail in our post on why your Q1 2026 estimated tax payment matters.
California Has Its Own Estimated Tax Schedule
California doesn't follow the federal calendar — and this catches a lot of Bay Area business owners off guard.
California's 2026 estimated tax deadlines:
- Q1: April 15, 2026
- Q2: June 15, 2026 — one day earlier than federal
- Q3: No payment required
- Q4: January 15, 2027
California also has its own quirks. The FTB requires 30% of your annual estimated tax in Q1 and 40% in Q2 — so 70% of your total California estimated tax bill is due by mid-June. Most people are surprised by this front-loading when they first encounter it. We've written about California payroll and tax rules if you want more context on the state side.
How to Actually Pay
Federal: Pay at IRS Direct Pay — free, straightforward, no account required. Or through the Electronic Federal Tax Payment System (EFTPS) if you prefer scheduled payments.
California: Pay through the FTB's Web Pay system. Same deal — free and direct from your bank account.
Both systems let you specify which tax period the payment applies to. Make sure you select the correct quarter when you pay.
What Happens If You Miss It
If you miss Q2 or pay less than you should, the IRS calculates an underpayment penalty based on the shortfall for that quarter. The penalty accrues daily from the due date until you pay.
The FTB does the same on the California side — with its own rate and its own calculation.
Missing one quarter isn't the end of the world. But if you've missed Q1 and Q2, you've got two quarters of penalties stacking up by mid-June. Better to catch up now with a larger Q2 payment than to let it compound.
If you have a genuine hardship or unusual circumstances, penalty abatement is possible — but you need to file the return first and request it properly. We covered this in our article on freelancer quarterly tax payments.
If Your 2026 Income Is Looking Very Different From 2025
Maybe you had a big year in 2025 and 2026 is slower. Or you took on a major new client in Q1 2026 and income is running way ahead of last year. Either way, sticking rigidly to Method 1 may leave you over-paying or under-paying.
This is where working with a CPA makes a real difference. Good year-round tax planning means revisiting your estimated payments each quarter based on actual income — not just dividing last year's number by four and hoping for the best.
Asnani CPA Keeps Bay Area Business Owners On Track
Estimated taxes are one of those things that seem simple but are genuinely easy to get wrong — especially with California's front-loaded schedule, the $150K threshold, and the interplay between your federal and state obligations.
At Asnani CPA, we help business owners across San Francisco, San Jose, Palo Alto, Santa Clara, Sunnyvale, and Fremont stay on top of quarterly payments and avoid unnecessary penalties all year long.
