California Sales Tax Compliance for Startups. Handled.

California's treatment of SaaS is one of the most misunderstood rules in startup tax compliance. Generally, SaaS is not subject to California sales tax when delivered electronically - but the line between taxable software and non-taxable SaaS is not always clear, and the California Department of Tax and Fee Administration (CDTFA) applies these rules aggressively. If your product involves any downloadable component, custom configuration, or hybrid delivery model, you need a nexus study before assuming you are exempt.

A nexus study is a full analysis of where your startup has a sales tax obligation - based on your physical locations, employee locations, revenue by state, and product type. You need one if you have been operating for more than a year without a formal review of your sales tax exposure, if you have employees or contractors in multiple states, or if you are preparing for a fundraise or acquisition where tax liabilities will be scrutinized. Finding out you owe back sales tax during due diligence is one of the most common deal complications for California startups.

A Voluntary Disclosure Agreement (VDA) lets your startup come forward to a state tax authority and resolve past sales tax exposure voluntarily - with reduced penalties and a limited lookback period, typically three to four years instead of the full statute of limitations. If your startup has been selling into states where you had nexus but never registered or filed, a VDA is almost always the right move. Coming forward voluntarily is treated far more favorably than being found during an audit.

Most startups overpay sales tax because they pay it on purchases that are actually exempt - software subscriptions, cloud services, R&D supplies, and resale items are commonly over-taxed. A reverse sales tax audit reviews your purchase history and identifies overpayments you can recover. For startups with significant technology spend, this can recover thousands of dollars in taxes already paid. It costs nothing to find out whether you have recoverable overpayments.

$249 per filing. That covers monthly, quarterly, or annual returns in every registered state. Nexus studies, VDAs, registrations, and reverse audits are scoped separately based on complexity. The initial consultation is free - we assess your sales activity, identify your nexus exposure, and give you a straight answer on what you owe and what it costs to fix before you commit to anything.