How to Start an Ecommerce or Online Store Business in California

California has 39 million potential customers. That’s the pitch. Here’s the fine print: the state charges every LLC $800 a year just to exist — starting the first year — and it has one of the most demanding consumer privacy laws in the country. Whether you’re dropshipping, selling handmade goods, or launching a DTC brand, those two facts will shape your budget and your legal exposure more than anything else.

This guide covers what’s actually different about running an ecommerce business in California, so you’re not hit with a surprise tax bill or a privacy complaint six months in.

Business Registration

Choose Your Business Structure

Most ecommerce businesses in California register as an LLC. It gives you liability protection, separates your personal assets from business debt, and is straightforward to set up. But it comes with a cost that catches a lot of new sellers off guard.

The $800 franchise tax is not optional and not deferred. California’s Franchise Tax Board charges every LLC $800 per year, starting with your first tax year. There’s no grace period, no waiver for small revenue, no “once you’re profitable” exception. You could make $3,000 in your first year and still owe $800 to the FTB. File Form LLC-1 (Articles of Organization) through the California Secretary of State at bizfileOnline.sos.ca.gov. The filing fee is $70.

Within 90 days of forming your LLC, you’ll also need to file a Statement of Information — that’s another $20.

Sole proprietorships skip the $800 franchise tax, but you lose liability protection entirely. One customer dispute, one product injury claim, and your personal savings are on the table. For most ecommerce businesses, the LLC structure is worth the annual cost.

Corporations pay $100 to incorporate and face an 8.84% corporate tax rate (or the $800 minimum, whichever is higher). Unless you have a specific reason to incorporate — investor funding, equity structure — most small ecommerce businesses should default to an LLC.

Get Your EIN

Apply for an Employer Identification Number at irs.gov/ein. It’s free, takes about 10 minutes, and you need it to open a business bank account and file taxes. Do this right after you form your LLC.

CDTFA Seller’s Permit

If you’re selling tangible physical goods — clothing, candles, electronics, supplements, anything you can hold — you need a seller’s permit from the California Department of Tax and Fee Administration. Registration is free at cdtfa.ca.gov. No fee, no waiting period. You just register, get your permit number, and you’re authorized to collect sales tax from California customers.

This is not optional. Selling taxable goods without a seller’s permit is a violation of state law. The permit is free, so there’s no reason to delay.

Note: if you’re selling only digital products or services, the seller’s permit requirement is less clear-cut — but California taxes a wider range of digital goods than most states, so check the CDTFA guidance before assuming you’re exempt.

City Business License

Even if you’re running your ecommerce business from a spare bedroom, your city or county almost certainly requires a business license. This applies whether you’re in Los Angeles, Sacramento, Fresno, or a smaller municipality. Fees vary — typically $50 to $100 annually — and the application is usually through your city’s finance or business office website.

Don’t skip this because you’re home-based. Some cities actively enforce this, and operating without a license can result in back fees plus penalties. It’s also required documentation if you ever need a business bank account or apply for financing.

Sales Tax in California

The Base Rate and Local Add-Ons

California’s statewide base sales tax rate is 7.25%. That’s already one of the highest base rates in the country. But most California locations charge more — local district taxes stack on top of the base rate, and in some areas the combined rate hits 10.75%.

Los Angeles County runs 10.25% in many areas. Parts of the Bay Area hit 10.25–10.75%. When you’re calculating margins on your products, use the customer’s local rate, not just the statewide number. Most ecommerce platforms (Shopify, WooCommerce, BigCommerce) can auto-calculate this by zip code, but you need to make sure sales tax collection is actually enabled in your platform settings.

California’s Economic Nexus Threshold Is Unusually High

Here’s something that surprises a lot of new sellers: California’s economic nexus threshold is $500,000 in annual sales. That’s the point at which out-of-state sellers are required to collect California sales tax.

Most states set their threshold at $100,000. California’s threshold is five times higher, which means small out-of-state sellers don’t have to worry about California nexus until they’re doing serious volume. If you’re a California-based business, this threshold doesn’t change anything for you — you have physical nexus from day one, so you’re collecting sales tax on California sales regardless of volume.

But if you’re reading this and considering whether to incorporate in California vs. another state, it’s worth understanding: physical presence in California (your home, a warehouse, even a remote employee) creates nexus immediately.

Marketplace Facilitators Handle Their Own Collection

If you sell on Amazon, Etsy, eBay, or another marketplace facilitator, the platform collects and remits California sales tax on your behalf. You don’t need to do anything extra for those sales. California law requires marketplace facilitators with over $500,000 in California sales to handle collection and remittance.

This doesn’t mean you’re off the hook for your own website. If you run a Shopify store alongside your Amazon presence, you’re responsible for sales tax collection on direct sales. Marketplace facilitator rules only cover sales made through that marketplace.

Digital Goods Are Taxable in California

This trips up a lot of sellers coming from other states. California taxes many digital products — downloaded software, digital music, e-books (in some cases), and online services. This is different from states like Virginia, where digital goods are generally exempt.

If you sell digital downloads, online courses, SaaS subscriptions, or similar products, don’t assume you’re exempt from sales tax in California. Review the CDTFA’s guidance on digital products specifically, because the rules are product-type-specific. Some digital services remain untaxed, but the category is narrower than most sellers expect.

CCPA Compliance

Who It Applies To

The California Consumer Privacy Act is a federal-level privacy law that happens to be a state statute. If your ecommerce business meets any one of these three thresholds, it applies to you:

Annual gross revenue over $25 million
Buy, sell, share, or receive personal information of 100,000 or more California consumers or households per year
Derive 50% or more of annual revenue from selling consumers’ personal information

Most small online stores don’t hit these thresholds at launch. But if you’re running paid ads, building an email list, using retargeting pixels, or collecting customer data at scale, you could cross the 100,000 consumer threshold faster than you think — especially if you’re tracking website visitors, not just paying customers.

What CCPA Requires

If you’re covered, the requirements are substantial:

Privacy policy. You need a clear, specific privacy policy that discloses what personal information you collect, why you collect it, how you use it, and whether you share or sell it. Generic boilerplate doesn’t cut it.

Opt-out mechanisms. Consumers have the right to opt out of the sale or sharing of their personal information. That means a “Do Not Sell or Share My Personal Information” link, typically in your site footer. If you run a retargeting pixel (Google Ads, Meta Ads), that may constitute “sharing” personal information under CCPA, which means this opt-out mechanism is more relevant than many small businesses realize.

Data access rights. Consumers can request to know what data you’ve collected about them and ask you to delete it. You need a process to handle those requests — typically a form or email address — and you must respond within 45 days.

CPRA Strengthened the Rules in 2023

The California Privacy Rights Act (CPRA) went into effect January 1, 2023, as an amendment to CCPA. It created a new category called “sensitive personal information” (including Social Security numbers, precise geolocation, health data, and financial account details) with additional restrictions. It also established the California Privacy Protection Agency (CPPA) as a dedicated enforcement body — meaning CCPA enforcement is no longer solely the California AG’s responsibility.

For ecommerce businesses, the practical changes are: stronger data minimization requirements, expanded consumer rights, and a regulatory body that exists specifically to enforce privacy law. The CPPA has been actively pursuing rulemaking and enforcement since 2023.

Penalties

The California AG and the CPPA can both pursue violations. The fines are:

$2,500 per unintentional violation
$7,500 per intentional violation

Violations involving children’s data are treated as intentional, with $7,500 per incident. For a mid-sized ecommerce site with 10,000 monthly visitors and no privacy compliance, a single enforcement action could generate six-figure penalties quickly — each affected consumer is a separate potential violation.

If CCPA applies to your business, don’t treat compliance as optional. The cost of getting it right upfront is far lower than the cost of an enforcement action.

Startup Costs

Here’s what you’re actually looking at to launch a California ecommerce business:

Formation and Compliance

LLC filing fee: $70 (Form LLC-1, filed with the California Secretary of State)
Statement of Information: $20 (due within 90 days of formation)
Franchise tax: $800 in year one, every year after that
EIN: Free
CDTFA seller’s permit: Free
City business license: $50–$100 (varies by city)

That’s roughly $940–$990 in mandatory government fees before you sell a single item.

Platform Costs

Ecommerce platforms run $30–$300 per month depending on what you need:

Shopify Basic: $39/month — enough for most early-stage stores
WooCommerce: Free plugin, but you’re paying for WordPress hosting (~$10–$30/month) and your own time
BigCommerce: $39–$299/month
Squarespace Commerce: $36–$65/month

Don’t overbuy platform. Start with basic functionality and upgrade when you have revenue. Most new stores don’t need the $300/month plan.

CCPA Compliance

If your business is already at or near CCPA thresholds, budget $1,000–$10,000 for initial compliance implementation. That range covers:

A privacy lawyer reviewing your data practices (~$500–$2,000)
Privacy policy drafting or customization (~$200–$500)
Technical implementation of opt-out mechanisms, cookie consent banners, and data request workflows (~$500–$5,000 depending on your tech stack)

If you’re well below the thresholds and building toward them, start with a solid privacy policy and a “Do Not Sell” link now. It’s much easier to build privacy practices into your operations from the start than to retrofit them at scale.

Inventory

Highly variable. A dropshipping model can start with near-zero inventory cost. A private-label product launch might require a $5,000–$20,000 minimum order from a manufacturer. A handmade goods business sits somewhere in between. Plan your inventory budget based on your specific model — don’t let anyone tell you there’s a standard number here.

What a Lean California Ecommerce Launch Actually Costs

Realistic low end: ~$1,000–$2,000 for the first year. This assumes you’re using a low-cost platform, dropshipping or starting with minimal inventory, handling everything yourself, and not yet at CCPA thresholds.

More typical range: $3,000–$5,000 for year one. This covers formation costs, a proper ecommerce platform, some initial inventory, basic photography, and a small ad budget.

The $800 franchise tax is the fixed cost that doesn’t scale with revenue. It doesn’t matter if you make $500 or $500,000 — you owe $800 to the FTB. Budget for it from day one.

Is California Worth It?

The $800 annual franchise tax and the CCPA compliance burden are real costs. They’re higher than almost any other state. But consider what you get: a customer base of 39 million people, the largest state economy in the country, and infrastructure — logistics, suppliers, talent — that’s hard to match anywhere in the US.

The math only works against you if you’re starting very small and staying small. If you’re building something with real scale, California’s costs become a rounding error against the market access.

The immediate next step: register your LLC at bizfileOnline.sos.ca.gov, get your CDTFA seller’s permit at cdtfa.ca.gov, and check your city’s website for a business license application. Those three things — done in a day — get you legally operational in California.