Serving the South Bay & West Los Angeles Rated 5.0 on Google Reviews (310) 220-0248
A warehouse and rail corridor in Carson at dusk

Service

Sales tax

California sales and use tax: registration, filing, nexus, district tax, and representation when the CDTFA opens an audit.

Sales tax is the tax most likely to be wrong and least likely to be noticed until it is expensive. It is administered by an agency separate from the IRS and the FTB, it reaches back years, and the liability is personal in ways income tax generally is not.

The CDTFA identified $745.3 million in sales and use tax deficiencies in FY2024-25, up roughly 19% on the prior year. Enforcement is not getting lighter.

What we do

  • Seller's permit registration and CDTFA account set-up
  • Nexus analysis: where you have created an obligation, and when it started
  • Return preparation and filing, monthly, quarterly or annual
  • District tax allocation, which is where most assessments actually originate
  • Resale and exemption certificate management
  • Voluntary disclosure agreements where obligations have been missed
  • Audit representation, from the first contact letter to appeal
  • Use tax accrual review: the liability businesses forget they have

Use tax is the quiet one

CDTFA

If you buy equipment, software, supplies or furniture from an out-of-state seller who did not charge California tax, you generally owe use tax on it directly.

Almost nobody self-assesses this correctly, and it is one of the first things an auditor tests because it is easy to find in your own purchase records. If you have never accrued use tax, that is worth reviewing now rather than under audit.

I had a great experience working with WAGOPOP accounting firm. Tom was very professional, listed carefully to understand before working to accommodate my bussiness needs. And was able to Answer all my inquiries. I highly recommend them

Samuel JacobGoogle review, 5 stars, June 2025

I’ve had a great experience with this WAGOPOP. They offer a full range of services, including account controller support, sales tax management, accurate bookkeeping, and reliable payroll services. The team is professional, responsive, and truly understands the needs of small businesses. I highly recommend them for anyone looking for dependable and comprehensive accounting solutions. Thank you Tom

Peter MichealGoogle review, 5 stars, May 2025

I recommended this place if you at California Manhattan Beach And you’re looking for something special, you have to visit this place. amazing definitely I will come again

Samuel AdlyGoogle review, 5 stars, September 2024

Common questions

Not answered here? Ask us directly: we would rather explain it than have you guess.

When do we have to register for California sales tax?

If you have a physical presence in California (an office, staff, inventory in a warehouse) the obligation generally starts immediately. If you are out of state, the economic nexus threshold is $500,000 in sales of tangible personal property delivered into California, measured against the current or prior calendar year. It is a sales-only test; the 200-transaction test that many states use was eliminated in California in 2019. Sales made through a marketplace count toward the threshold. See our nexus page.

We should have registered a while ago. What happens now?

Almost certainly less than you fear, provided you come forward rather than waiting to be found. California operates a voluntary disclosure programme that can limit the lookback period and abate penalties. That option generally disappears once the CDTFA contacts you first, which is the main reason not to wait.

The CDTFA has sent us a letter. What should we do first?

Do not send records or answer detailed questions before speaking to someone who handles these. California requires a Power of Attorney on file before anyone can represent you, so that is the first practical step. What you provide, and how it is organised, shapes the audit: see CDTFA audit representation.

Is software taxable in California?

It depends on delivery. Software delivered electronically with no tangible medium is generally not subject to California sales tax; software delivered on physical media generally is. Custom programming is treated differently again, and bundled hardware-and-software arrangements need care. This is a genuinely technical area and the answer turns on the specifics of your contracts. It is worth getting right, it is a common audit finding.

How is district tax different from the state rate?

California's statewide base rate is topped up by district taxes voted in at city and county level, which is how combined rates reach 10.75% in some places. The difficulty is allocation, which district applies depends on where the sale is consummated or where the goods are delivered, and getting it wrong misallocates tax even when the total collected is correct. See our district tax page.

How do we start?

Book a scoping call using the form on this page, or call us. We will ask what you need, who is asking you for it, and what condition your records are in, then tell you what the engagement involves and what it will cost before anything begins.

Book a scoping call

Twenty minutes, no charge. Tell us what you need and we will tell you what it involves, what it will take, and whether we are the right fit for it.

  • A short call with the person who would actually do the work.
  • A clear scope and a fixed quote before anything begins.
  • We reply to every enquiry within one business day.

Prefer to talk now? Call (310) 220-0248
Monday to Friday, 9am to 6pm PT

Add a number and our AI assistant will call you shortly to set up your scoping call. Leave it blank if you would rather we email.

Free resource

What to do in the first two weeks of a CDTFA audit

The early decisions in a sales tax audit set the shape of the whole thing: the period, the sample method, and what leaves your office. This is the sequence we follow.

  • What to send in response to the first letter, and what to hold
  • How the sample period is chosen and where you get a say
  • Records to assemble before the opening conference
  • Statute of limitations and waiver requests, in plain terms

There is no instant download. A person sends it, usually the same working day.