//Ontario, California
How to start a business
in Ontario.
Ontario is one of the busiest logistics and distribution hubs in the country, anchored by Ontario International Airport, the Ontario Convention Center, and the Ontario Mills mega-mall. Here is the practical sequence to register, license, and open, with the official links and where to get free help.
Ontario punches far above its footprint. Ontario International Airport moves both passengers and a heavy volume of air cargo, and the warehouses and distribution centers that ring it make the city one of the largest logistics and goods-movement hubs in the country. Add manufacturing, the Ontario Convention Center, and Ontario Mills, one of the biggest outlet and retail destinations in the region, and you get a local economy that runs on freight, trade shows, and shoppers arriving from across the Inland Empire and beyond.
That means your customer might be a national retailer leasing a distribution center, a shopper at Ontario Mills, a crew flying in for an event near the airport, or a family that has lived in the city for a generation, and each finds you differently. Getting open cleanly, with the right business license, permits, and zoning sign-off, is the first step. Getting found afterward is the second. This guide covers the first in detail, then points you to the second at the end.
//The sequence
How to start a business in Ontario, step by step.
Ontario runs business licensing through its Financial Services Department. Here is the full order, including the county and state pieces that sit alongside the city's own steps.
- 1
Register the business and the name
Form your LLC or corporation with the California Secretary of State through bizfile, or stay a sole proprietor. Either way, if you use a name that is not your legal name, file a fictitious business name (DBA) with the San Bernardino County Assessor-Recorder-County Clerk within 40 days of starting, then publish it for four weeks.
- 2
Get your free EIN
Get a free federal EIN from the IRS for banking, payroll, and taxes. It takes minutes online, and you should never pay a third party for one.
- 3
Register for a seller's permit if you sell goods
If you sell or lease physical goods, including retail at a center like Ontario Mills or wholesale out of a warehouse, register for a free seller's permit with the CDTFA so you can collect and remit sales tax.
- 4
Get your Ontario business license
Any business operating in Ontario, or doing business in the city, must obtain a business license before it commences. The Business License Division handles it, and the city works with HdL to process applications through an online portal. In-City and home-based licenses are reviewed by the Planning and Engineering Departments before your certificate is issued, and a new application is required if you change location or ownership. The business tax is set by the city's tax rate schedule, so confirm your exact amount and the current fees with the Business License Division at (909) 395-2022 before you file.
- 5
Confirm zoning and pull any industry permits
Before you sign a lease, confirm your address and activity are allowed, which matters in a city with distinct warehouse, industrial, retail, and residential zones. Run your business type through CalGold to see every permit that applies. If you are opening any food business, you also need a health permit and inspection from San Bernardino County Environmental Health Services before you can serve a single customer.
- 6
Budget for the $800 state tax
If you formed an LLC or corporation, plan for California's $800 minimum annual franchise tax. It is due whether or not you turn a profit in year one, so build it into your first-year budget.
- 7
Then get free expert help
Lean on the free experts before you pay anyone. The Inland Empire SBDC offers no-cost, confidential advising to San Bernardino County businesses on planning, funding, permitting, and marketing.
//Bookmark these
Official Ontario, San Bernardino County, and California resources.
Each link goes straight to the government or nonprofit source that handles it. Go to them directly rather than a paid middleman that charges for free filings.
A business license is required before you commence business in Ontario, and a new application is needed when you change location or ownership. The city's Business License Division runs it through an online portal, and In-City and home-based licenses are reviewed by the Planning and Engineering Departments before your certificate is issued. Questions go to the Business License Division at (909) 395-2022.
Register an LLC, corporation, or partnership, or reserve a name, directly with the state.
Your free federal tax ID. The IRS issues it online in minutes. Never pay a third party for one.
Free sales-tax permit, required if you sell or lease physical goods in California.
Enter your city and business type to see every permit you need, with the agency contacts.
Most LLCs owe California's $800 minimum annual tax. Budget for it before you form one.
File a fictitious business name with the San Bernardino County Assessor-Recorder-County Clerk within 40 days of starting ($90 for the first name), then publish it for four weeks.
Restaurants and food facilities need a health permit and inspections from San Bernardino County Environmental Health Services, which posts a letter grade. 800-442-2283.
No-cost, confidential consulting and training for Riverside and San Bernardino county businesses, hosted by the Inland Empire Center for Entrepreneurship at CSU San Bernardino and funded through the SBA.
//By trade in Ontario
Common Ontario businesses, and the extra step each needs.
Logistics, warehousing, or distribution
Ontario is built for goods movement, and warehouses, 3PLs, freight and trucking outfits, and distribution operations all still need an Ontario business license. Location and activity have to match the zoning, so confirm the site before you lease, and run your operation through CalGold for any state or federal permits tied to transportation, hazardous materials, or specific commodities.
Retail at Ontario Mills or a shopping center
A storefront at Ontario Mills or another center needs the city business license plus a seller's permit from the CDTFA to collect sales tax. Confirm the space is zoned for your use, and if you sell food or prepared items you also need a health permit from San Bernardino County Environmental Health Services.
Hospitality near the airport or convention center
Hotels, event services, and vendors serving travelers and the Ontario Convention Center register with the city like everyone else. Anything involving food or beverage needs a county health permit, and alcohol runs through the state ABC. With traffic driven by flights and events, being findable online is as important as the paperwork.
Restaurant or food business
Beyond the Ontario business license, every food facility needs a health permit, plan check, and inspection from San Bernardino County Environmental Health Services, which posts a letter grade. Serving alcohol adds a state ABC license. Start the county health steps early, because they shape your build-out and your opening date.
//When you are ready to be found
Getting open is step one. Getting found is step two.
Ontario is several markets at once
National shippers, Ontario Mills shoppers, event traffic, and longtime residents all search differently. A clear web presence and local search strategy is what turns a specific Ontario audience into your customers.
Local search is the front door
Most first customers come from a Google search or the map pack. A complete profile, real reviews, and a fast site do most of the work in a market this varied.
Mining Wells is based in Irvine and works with businesses across San Bernardino County
We are a Southern California marketing agency, and Ontario is an easy reach for us. We help local businesses get found and turn that into booked revenue.
Honest work, no fiction
No promised rankings, no fixed lead counts. Clear work and reporting tied to revenue, month to month, after you use the free resources above.
//How we help
Marketing that turns your Ontario business into booked revenue.
Own the local searches your Ontario customers actually type.
Fast, credible sites built to convert the visitors you already have.
Paid campaigns measured by cost per booked customer.
The county-wide start-a-business steps and other city guides.
The full playbook for winning the map results near you.
//Common questions
Things we get asked first.
Do I need a business license in Ontario, CA?
Yes. Any business operating in Ontario, or doing business in the city, must obtain a business license before it commences, and a new application is required if you change location or ownership. The Business License Division processes applications through an online portal, and In-City and home-based licenses are reviewed by the Planning and Engineering Departments first. Confirm your requirements and fees with the division at (909) 395-2022.
How much does an Ontario business license cost?
The business tax is set by the City of Ontario's tax rate schedule, and the amount depends on your business, so there is no single flat number that fits everyone. Rather than guess, contact the Business License Division at (909) 395-2022 or email BusinessLicense@OntarioCA.gov to confirm your exact tax and any fees before you file.
How do I open a restaurant or food business in Ontario?
Beyond the Ontario business license, every food facility needs a health permit, plan check, and inspection from San Bernardino County Environmental Health Services, which posts a letter grade, and serving alcohol requires a license from the state ABC. Confirm your location is zoned for the use and start the county health steps early, since they shape your build-out.
Can I run a business from my home in Ontario?
Yes, and you still need a city business license. Home-based licenses are reviewed by the Planning and Engineering Departments to confirm a home occupation is allowed at your address, so keep client traffic, parking, and signage within the rules and ask the Business License Division if you are unsure.
Can you guarantee customers once I open?
No, and anyone who guarantees rankings or a fixed number of leads is selling fiction. We promise honest work and reporting tied to revenue. What we can do is make you the credible, findable option when an Ontario customer searches.
About Mining Wells
We're on a mission to fix bad marketing.
Maybe:
- You are spending thousands on marketing tools, ads, and your website, with zero revenue increase to show for it.
- Every campaign you have tried gets minimal results.
- You have a great product that nobody seems to find.
- You are getting interest, but it never converts to a sale.
- You have a low retention rate.
- You have been paying a marketing agency for over a year and have not seen results.
You are not alone. Many founders and leaders live with the results of bad marketing without ever finding the reason.
And often that is because it can be many reasons. Sometimes it is the wrong ICP, sometimes the wrong messaging, sometimes the wrong targeting chasing impressions.
We are here to take the hard guesswork out and provide that clarity before it is too late.
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