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Business licenses & tax certificates

Check the local authority, requirements, applications, renewal, changes and public license searches for your business.

Check or apply for a business licenseRenew a business licenseClose or update a business licenseLook up a business licenseRegister a business for stormwater compliance

Before you start

  • Start with where your business is located and where it will operate. A county license may apply only to unincorporated areas or specific activities; cities can have their own requirements.
  • Some county offices provide guidance or referrals and do not issue a general business license. Read the entry before choosing an application.
  • A business license or tax certificate, an FBN/DBA filing, business entity registration and a professional license serve different purposes. Zoning, health and other activity permits may also apply. Business stormwater registration is a separate local programme where required.
  • Check the license period, renewal date and rules for changes in ownership or location. A renewal may not cover a move or a new owner. Fees and application steps depend on the license category.

2 guides with reviewed service links · Reviewed local guides · “City of San Diego”

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County government · San Diego

County of San Diego — business-license and permit guidance

Official county guidance and municipality referrals; this page is not a license-issuing department.

Unincorporated-area business rules and city license referrals (opens in a new tab)Official instructions

The county states no business license is needed in its unincorporated areas, while other permit rules may still apply. Use the county page to find city licensing and county permit departments.

Source checked October 16, 2026

San Diego County official website · San Diego County business-license guidance (opens in a new tab)

Reviewed business licensing instructions

You do not need a business license in unincorporated areas of San Diego County. However, you may need to follow other rules and permit requirements.

Saved evidence: e4dc49afc8e05ea0 · Agent source review

Full guide, contact details & sources →
City government · San Diego

San Diego — Office of the City Treasurer — Business Tax

City of San Diego business licensing or tax certificates.

Check city Business Tax Certificate requirements (opens in a new tab)Official instructions

The city issues a Business Tax Certificate as acknowledgement of tax payment. Check other required zoning, police, health, state and activity approvals separately.

Service area: City of San Diego business activity; city programme, not county-wide licensing. Area details & sources

Source checked October 16, 2026

San Diego government · San Diego — Business Tax Certificate (opens in a new tab)

Reviewed business licensing instructions

All businesses operating in the City of San Diego are required to register for a Business Tax Certificate.

Saved evidence: 80ea55f5ae9f2922 · Agent source review

Apply for a city Business Tax Certificate (opens in a new tab)Official online service

Use the current city-referred application portal. Registration is required for the online service; mail and in-person channels are also described on the city instructions page.

Service area: City of San Diego business activity; city programme, not county-wide licensing. Area details & sources

Source checked October 16, 2026

San Diego government · San Diego — Business Tax Certificate (opens in a new tab)

Reviewed business licensing instructions

Apply for a New Business Tax Certificate Online Now

Saved evidence: 80ea55f5ae9f2922 · Agent source review

Pay or renew an unchanged city Business Tax account (opens in a new tab)Official online service

Have the Online Account Number ready. This online payment route requires no change to the amount due; changes affecting the tax require another listed channel.

Service area: City of San Diego business activity; city programme, not county-wide licensing. Area details & sources

Source checked October 16, 2026

San Diego city service · San Diego — Business Tax renewal (opens in a new tab)

Reviewed business licensing instructions

Pay Your Business Tax

Saved evidence: 6346e9ce9414acf4 · Agent source review

Update an existing city Business Tax account (opens in a new tab)Official instructions

The city FAQ describes online updates with Account Number and PIN, or requests to the Business Tax team. A change of owner requires a new certificate.

Service area: City of San Diego business activity; city programme, not county-wide licensing. Area details & sources

Source checked October 16, 2026

City of San Diego — Office of the City Treasurer · San Diego — Business Tax faq (opens in a new tab)

Reviewed business licensing instructions

How can I make a change to my existing Business Tax account?

Saved evidence: 8bf6a2e6c30630d3 · Agent source review

Review city Business Tax rates, employee charges and penalties (opens in a new tab)Official instructions

Check employee-count categories, the additional state and minimum-wage-enforcement charges, late penalties and district assessments. These components do not calculate your final bill.

Service area: City of San Diego business activity; city programme, not county-wide licensing. Area details & sources

Source checked October 16, 2026

City of San Diego — Office of the City Treasurer · San Diego — Business Tax fees (opens in a new tab)

Reviewed business licensing instructions

Business Tax Rates and Fees

Saved evidence: f2eca6218fa67d3b · Agent source review

Contact the city Business Tax Program (opens in a new tab)Official instructions

Check separate telephone hours, lobby walk-in days and appointments before visiting. Mailing instructions differ across the city pages; confirm the destination with the programme.

Service area: City of San Diego business activity; city programme, not county-wide licensing. Area details & sources

Source checked October 16, 2026

City of San Diego — Office of the City Treasurer · San Diego — Business Tax contact (opens in a new tab)

Reviewed business licensing instructions

Contact the Business Tax Program

Saved evidence: 6da75a5648bad708 · Agent source review

Book a city Business Tax registration appointment (opens in a new tab)Official online service

Use the official appointment referral for in-person registration or the other listed programmes.

Service area: City of San Diego business activity; city programme, not county-wide licensing. Area details & sources

Source checked October 16, 2026

San Diego government · San Diego — Business Tax Certificate (opens in a new tab)

Reviewed business licensing instructions

Schedule an appointment

Saved evidence: 80ea55f5ae9f2922 · Agent source review

Review city Business Tax exemption information (opens in a new tab)Official instructions

Open the city exemption information and confirm whether your business qualifies; no blanket exemption or zero-dollar total is inferred here.

Service area: City of San Diego business activity; city programme, not county-wide licensing. Area details & sources

Source checked October 16, 2026

San Diego city service · San Diego — Business Tax and rental unit tax (opens in a new tab)

Reviewed business licensing instructions

Business Tax Exemptions

Saved evidence: f3587c1cc03bff6a · Agent source review

Full guide, contact details & sources →

Selected agencies, with sources checked individually. See all coverage and sources.