In the case of California business owners, the tax deadline does not close on April 15th. Owing to your commitments, it is important to keep track of the due dates over the span of the year. This calendar of state tax deadlines is essential to be aware of in a business not to face expensive fines because of neglecting important deadlines.
To remain in balance with the California tax calendar, it is necessary not only to make some markings but also to plan in advance. In addition to the significant deadlines, do not forget about industry-related requirements such as use tax, business property tax statements, and other required license renewals. Always look for an experienced tax professional (like the best tax attorney in Los Angeles) and get help.
Estimated Tax Payment
Quarterly estimated payments of taxes have to be made by most business proprietors in case they anticipate paying California taxes amounting to 500 or more.
Important Dates in 2026
Mark these 2026 deadlines:
2026 Payment Due Dates:
- 1st Quarter: April 15, 2026
- 2nd Quarter: June 15, 2026
- 3rd Quarter: September 15, 2026
- 4th Quarter: January 15, 2027
Schedule all of this in advance using the electronic payment systems of California, so that you will never have to miss a deadline in the process of maintaining great cash flow.
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Learn about Annual Deadlines
Various parties have varying filing requirements. Here’s your 2026 checklist:
In the case of Corporations (S Corp and C Corp):
Franchise Tax: Installment 1 to be paid April 15, 2026.
Corporate Tax Return: March 16, 2026 (March 15 will be on Sunday)
For LLCs:
Annual Franchise Tax: Pay at your entity anniversary as follows:
Information Statement: Every two years by the end of the month of your formation.
For All Employers:
Payroll Tax Returns: 30 April, 31 July, 31 October, and 31 January, 2026, 2027.
Wages Reconciliation: 2026 wages by January 31, 2027. Don’t forget to discuss with an expert (like a tax attorney in LA) before taking any major step.
Sales Tax Responsibilities
Your amount of tax liability will determine the frequency of your filing, and your returns will be due:
Monthly Filers: By the end of the next month.
Quarterly Filers: April 30, 2026, July 31, 2026, October 31, 2026, and January 31, 2027.
Annual Filers: Due January 31, 2027
It is important always to file even when there is no tax to be paid to keep in good health condition.
Tips That Will Help in Strategic Compliance
You can also consider adopting a quarterly tax review system, whereby you evaluate your future liabilities, review the payments that you have estimated, and also have all the materials in place. This disciplined method not only helps you to avoid last-minute scramble and punishments, but also gives you some valuable information about the financial well-being of your business throughout the year.
- Digital Management: Add calendar notifications of all relevant deadlines.
- Quarterly Reviews: Books are reconciled quarterly to make sure that they are paid correctly.
- Professional Advice: Use an expert in California tax who can give entity-specific reminders and planning ideas.
As part of the strategy to turn compliance into a strategic asset that helps you grow your business, you can make tax management a continuous concern, meaning that compliance can no longer be seen as a reactive liability but as an opportunity to free up time and effort to focus on business development with confidence.
