Blog

We keep you up to date on the latest tax changes and news in the industry.

December 2025 Tax Deadlines for Inland Empire Businesses

As the year comes to a close, small business owners throughout the Inland Empire—covering areas like Ontario, Rancho Cucamonga, Upland, San Bernardino, and Riverside—should be mindful of crucial year-end tax deadlines. Whether you're part of the bustling real estate scene, managing a thriving medical practice, or keeping wheels turning in the trucking and logistics industry, understanding these deadlines is vital for optimal financial management and strategic planning. Let’s look at the key dates you need to keep in mind this December.

December 1 - Year-End Tax Planning Essentials

Now is the time for proactive tax strategy discussions, especially if you've experienced significant income fluctuations, marital changes, or property transactions in 2025. Make sure to schedule a tax planning session to align actions with your financial goals.

Image 1

December 10 - Deadline for Reporting Tips

For employees in tip-based roles, it's mandatory to report all tips exceeding $20 received in November on IRS Form 4070 by December 10. Employers must then withhold applicable taxes. If your regular wages don't cover these withholdings, you'll see it listed in box 8 of your W-2 and will need to manage these payments when filing your 2025 tax return.

December 31 - IRA Withdrawal Deadline

If you were born before January 1, 1952, you need to make your mandatory withdrawal from your Traditional IRA to avoid penalties. However, if you turned 73 this year, you have until April 1, 2026, to take your first required minimum distribution. Coordination with financial advisors is advisable to ensure timely compliance and penalty avoidance.

Southern California Small Business Owners: Let’s Optimize Your Tax Strategy
Are you a small business owner in Inland Empire, Los Angeles, or Orange County? Let’s discuss tailored tax strategies designed specifically for small businesses in Southern California. Book your free consultation with a licensed CPA today.
Book Your Appointment

Image 2

December 31 - Prepay Deductible Expenses

Ensure all deductible expenses are paid by December 31 to qualify for 2025 returns. This excludes contributions to IRA, SEP, or Keogh plans, permissible post-year-end contributions offer more time for strategic financial adjustments.

December 31 - Plan Ahead for Financial Transactions

Given potential closures of financial institutions on December 31, plan significant transactions ahead to avoid last-minute dilemmas.

Image 3

Weekends & Holidays:
If the due date is a Saturday, Sunday, or legal holiday, the deadline extends to the next business day. For disaster area extensions, consult FEMA and the IRS for updated declarations and relief details.

Southern California Small Business Owners: Let’s Optimize Your Tax Strategy
Are you a small business owner in Inland Empire, Los Angeles, or Orange County? Let’s discuss tailored tax strategies designed specifically for small businesses in Southern California. Book your free consultation with a licensed CPA today.
Book Your Appointment
Share this article...

Sign up for our newsletter.

Each month, we will send you a roundup of our latest blog content covering the tax and accounting tips & insights you need to know.

I confirm this is a service inquiry and not an advertising message or solicitation. By clicking “Submit”, I acknowledge and agree to the creation of an account and to the and .

We care about the protection of your data.