Tips and Deadlines: How to Avoid Late Payments to the CDTFA

If you’re a California business owner, the IRS is not the only agency to which you pay taxes. The California Department of Tax and Fee Administration (CDTFA) is known for its sales tax audits. The CDTFA generally reviews retailers who sell items at a retail price and the tax calculation is based on the gross receipts obtained from the retail sales. When it comes to managing your San Francisco business taxes, staying on top of deadlines and avoiding late payments is critical. The CDTFA has established filing deadlines for businesses. As the year comes to a close, here are a few tips and a look at the deadlines to be aware of in 2025.

CDTFA filing deadlines depend on the type of tax or fee your San Francisco business is responsible for, as well as your assigned filing frequency. Businesses with moderate tax liabilities file quarterly taxes. Tax returns are due on the last day of the month following the end of the quarter:

Quarter 1 (January – March): April 30
Quarter 2 (April – June): July 31
Quarter 3 (July – September): October 31
Quarter 4 (October – December): January 31

While quarterly tax payers is the most common, there are other businesses that must file monthly taxes. Those are generally businesses with high tax liabilities. Returns for these businesses are due by the last day of the following month (e.g., January’s return is due February 28).

Finally, there are businesses with smaller tax liabilities, or those in specific industries, file taxes annually. Those company tax returns are typically due by January 31 of the following year. Be sure to check with the CDTFA to clarify which category your business falls into if you are unsure. 

If you find your business unable to file or pay by the deadline, you must act quickly so you do not end up with penalties or being possibly audited by the CDTFA. To avoid problems, file as soon as possible. Your business will face penalty fees. However, late filings accumulate less interest and penalties when resolved promptly. In some cases, you can also request an extension. The CDTFA may grant extensions under certain circumstances. Talk to an experienced tax attorney or professional for help in this area. Finally, set up a payment plan if you cannot pay the full amount owed at the deadline. The CDTFA may allow you the opportunity to use an installment agreement.

To protect your San Francisco business, it’s best to stay ahead of the CDTFA filing deadlines and make all payments in a timely manner. Setting your business up for success now will allow you the peace of mind knowing your taxes are handled efficiently. If you are facing a situation where that may not be possible, enlist the help of an experienced California tax attorney or professional who can help you navigate the situation with the CDTFA. 

Allison Soares is a partner and tax attorney at Vanst Law LLP. It doesn’t matter the issue: audits, collections, appeals, international disclosures, grumpy people— Allison enjoys fixing problems. In addition to her legal work, she has worked in accounting and utilizes that knowledge to her advantage while handling cases involving EDD audits from San Francisco to San Diego. 

Allison Soares

Allison Soares, a renowned tax attorney, excels in representing clients before the IRS, FTB, EDD, and CDTFA. With a Bachelor of Arts in Finance from the University of Wisconsin, Milwaukee, and a transformative teaching stint in Brazil, Allison’s diverse background enriches her legal expertise. She pursued law at St. Thomas University School of Law, Miami, complementing it with an MBA in accounting and forensic accounting. Further honing her skills, she obtained a Master of Laws in Taxation from the University of San Diego School of Law. As an adjunct professor at San Diego State University, Allison imparts her knowledge in tax procedures, practice, and ethics. Her accolades include being named Best of the Bar by the San Diego Business Journal and multiple Super Lawyer recognitions. Committed to community service, she volunteers with Forever Balboa Park and Friends of Balboa Park. Allison’s authoritative contributions in tax law are showcased through her publications and speaking engagements.
Google Review Mark
Posted on Google Google
Brandessa Hale profile picture
Brandessa Hale
Google star 1Google star 2Google star 3Google star 4Google star 5
I can't recommend Allison enough! She helped me successfully navigate a stressful EDD audit with expertise and grace. Not only is she incredibly smart and thorough, but she's also genuinely kind—something you don’t always expect from an attorney. Her support and guidance made all the difference. If you need a tax attorney who knows her stuff and truly cares, she's the one to call!
Posted on Google Google
Robin Christiansen profile picture
Robin Christiansen
Google star 1Google star 2Google star 3Google star 4Google star 5
Thank you Allison for all of your help and knowledge, and your strong team And referrals. I am beyond grateful. You went above and beyond my expectations.
Posted on Google Google
Dee Thibodeau profile picture
Dee Thibodeau
Google star 1Google star 2Google star 3Google star 4Google star 5
2024- Working with Allison has been an incredibly smooth experience both times I’ve worked with her. Her expert advice and the support she provides are outstanding, and we’ve had nothing but positive results each time. 2020- I was so impressed with her work during an EDD audit. I would HIGHLY recommend Allison to anyone going through an EDD Audit. From the very first 3 minutes of speaking with her, she was super helpful and professional, while also making me feel like I was talking to a friend, which really helped calm my anxiety. Allison was dedicated to helping us achieve the best possible outcome and was honest about all scenarios, even preparing us for the worst. We ended up with the VERY best outcome because of how she guided us through the process and made sure we had everything ready to tell our story to the auditor. If you want someone who truly listens, understands your business, and will be your biggest advocate, call Allison now! Be ready because she’s quick to respond with both calls and emails.
Posted on Google Google
Nadine Kunal profile picture
Nadine Kunal
Google star 1Google star 2Google star 3Google star 4Google star 5
Very thoughtful, concise, and honest advice provided. Would recommend her council to my family.
Posted on Google Google
Alex L profile picture
Alex L
Google star 1Google star 2Google star 3Google star 4Google star 5
We retained the services of Allison Soares for a recent IRS audit. The IRS was claiming we owed an exorbitant amount of money. After interviewing several qualified attorneys, Allison was the obvious choice. During this very stressful time for our family, we appreciated how knowledgeable and responsive she was from the very first call. Her professionalism and commitment to our case was truly impressive. She pointed out a few critical points, that another attorney may have missed, which we believe helped our case immensely. She guided us through this complicated process with great success and we could not have been happier with the outcome of the audit. We are 100% satisfied with her work and would highly recommend her to anyone seeking legal tax advice. Thank you so much Allison, we are truly grateful for all your hard work.
Posted on Google Google
Daniel Klein profile picture
Daniel Klein
Google star 1Google star 2Google star 3Google star 4Google star 5
I called this office to have a tax issue clarified for me. I have never received more candid, honest, and useful information. I would highly recommend Allison Soares.
Posted on Google Google
Parisa Ansari profile picture
Parisa Ansari
Google star 1Google star 2Google star 3Google star 4Google star 5
Allison Soares is incredibly knowledgeable, prompt, and helpful. Her detailed expertise in tax matters made my experience exceptional. Highly recommended!
Posted on Google Google
Allen Wang profile picture
Allen Wang
Google star 1Google star 2Google star 3Google star 4Google star 5
I received an EDD audit letter for my small s-corp business. I feel nervous. Fortunately I found Allison. I talked with her on phone today about my business and my concern, she gave me very solid suggestions and confidence to handle this. She is very honest and I highly recommend her to anyone who has trouble with EDD audit!
Posted on Google Google
Elie Nader profile picture
Elie Nader
Google star 1Google star 2Google star 3Google star 4Google star 5
Allison Soares is a great tax attorney. She helped my business navigate an difficult tax situation and I am very happy with the outcome