California Tax Codes for Sales Tax Reporting

Introduction to California Sales Tax Area Codes

This article continues our series on state‑specific tax codes used for sales tax reporting. After exploring Louisiana’s four‑digit domicile codes, we now turn to California. In this state, the codes used for reporting the local portion of sales tax are known as sales tax area codes. These codes serve the same function as “tax codes” in other states—identifying the combination of municipality (incorporated city), county and special districts that apply to a transaction.

We focus here on tangible personal property, such as retail goods, rather than specialized categories like motor‑vehicle leases or aircraft fuel. Properly coding each sale ensures that the correct local government receives its share of the tax and helps businesses comply with reporting requirements .

What Are Sales Tax Codes?

Many U.S. states assign codes that correspond to the local tax jurisdictions where a sale or use occurs. These codes identify combinations of counties, cities and special taxing districts. They are called by different names—domicile codes, tax jurisdiction codes, or tax area codes—but the purpose is the same: to simplify sales and use tax reporting and ensure that local tax is allocated to the correct jurisdiction.

In California, these codes are known as tax area codes (TACs). The California Department of Tax and Fee Administration (CDTFA) explains that accurate tax area coding is critical because it is the basis for distributing tax revenue to the place of sale or use . Each local jurisdiction (city or county) is identified by a tax area code.

The CDTFA’s publication CDTFA‑531‑FL1 lists all valid sales tax area codes. If a community is not listed, most likely because it’s not an incorporated city or town, you must use the code for the unincorporated area of the county where the community is located .

Structure of California Tax Area Codes

California tax area codes are five digits. The first two digits identify the county; the last three digits identify the city or indicate that the location is an unincorporated area. Communities within an incorporated city are marked with an asterisk in the listing and share the same code as the city (for example, several neighborhoods within Fresno all use code 10060). Unincorporated areas end in “998”. For example, Alameda County’s unincorporated area uses code 01998, and Los Angeles County uses 19998 .

The table below provides a sample of tax area codes from the official listing. Note that the listing includes hundreds of codes; this sample is for illustration. Use the CDTFA’s FL1 publication for a complete list and up‑to‑date revisions.

County	Example code	City/area	Notes
Fresno County	10060	City of Fresno	The same code is used for neighborhoods inside the city (e.g., Fig Garden Village, Highway City, Pinedale) .
10001	Clovis	Another city in Fresno County .
10998	Unincorporated area	Code ending in 998 indicates the unincorporated area of Fresno County .

California Sales and Use Tax Rates and District Taxes

While the tax area code identifies the jurisdiction, the tax rate depends on local and district taxes. The CDTFA publishes detailed district sales and use tax rates (CDTFA‑105). For example, Fresno County has a base tax rate of 7.975 %, but the City of Fresno (tax area code 10060) has a total rate of 8.35 % due to additional district taxes . Kern County has a base rate of 7.25 %, while Bakersfield (code 15021) is 8.25 % . Rates vary widely across counties and cities and get updated as often as quarterly, so obtaining the current rate for a specific address or city is essential.

How to Find a Tax Area Code and Sales Tax Rate

Using CDTFA Resources for Tax Area Code or Sales Tax Rate

City and Unincorporated Area Listing (CDTFA‑531‑FL1) – Use this PDF listing to look up the tax area code for a city or unincorporated area. Cities are organized by county; unincorporated areas end in 998 . This listing should be consulted when preparing Schedule F or H.
Sales Tax Rate Lookup Tool – The CDTFA provides an online tool to look up the sales and use tax rate by address. Users enter a street address, city and ZIP code, then click “Search” to find the current rate for that location . This tool reflects the total tax rate (state + local + district) and is updated regularly. However, it does not display the tax area code, so it cannot be used alone to determine the jurisdiction code needed for reporting.
Tax Rate Tables (CDTFA‑95) – For a quick view of current rates, the CDTFA’s California Sales and Use Tax Rates by County and City lists each county and the rates for its cities and unincorporated areas. For example, Fresno County’s unincorporated area has a rate of 8.25 %, while the City of Fresno is 8.35 %, and Kern County’s unincorporated area is 8.25 %. However, this tool does not provide the tax area code either.

Using USgeocoder for Both Tax Area Code and Sales Tax Rate

The CDTFA’s resources allow you to look up rates and codes manually, but they require separate steps: the FL1 listing provides the tax area code by city or unincorporated area, while the online rate lookup tool provides only the tax rate (without the code).

If you need to determine both the tax area code and the current rate for a specific address, or if you must match large numbers of addresses automatically, consider using USgeocoder’s Online Lookup Tool or API. USgeocoder’s service can return the tax area code, tax rate and local jurisdiction information for a single address or for entire lists. The online demo shows how the service works, and free API trials are available. This is particularly useful for companies that sell across California or integrate tax calculation into software platforms.

12-Character TAC vs. 5-Digit Tax Area Code (Official Clarification)

When using CDTFA’s mapping API, you may notice that the system returns a 12-character alphanumeric Tax Area Code (TAC). For example:

The 12-character TAC for address 3803 Clear Rdg, Santa Rosa, CA 95404 is 49060C870000 which consists of:

A 5-digit local tax area code
A 3-digit special taxing jurisdiction component
A 4-digit in-lieu allocation component

Because this composite code appears in the CDTFA API, some businesses assume it must be used when filing California sales and use tax returns.

To clarify this, we contacted the California Department of Tax and Fee Administration (CDTFA) directly. CDTFA confirmed:

Taxpayers are not required to report the full 12-character TAC when filing returns.
The 5-digit local tax area code remains the reporting standard for allocating local sales tax.

CDTFA further explained that when an address is required on certain schedules (such as Schedule H), their system geocodes the address internally to ensure correct allocation. Taxpayers are not required to calculate or submit the 12-character composite code.

This distinction is important for businesses implementing automated sales tax solutions.

Frequently Asked Questions

Do I need the 12-character TAC to file a California sales tax return?

No. CDTFA has confirmed that the full 12-character Tax Area Code (TAC) is not required for return filing. The 5-digit local tax area code is sufficient for reporting local tax.

What is the difference between the 5-digit tax area code and the 12-character TAC?

The 5-digit tax area code identifies the local jurisdiction (city or unincorporated county area) for reporting purposes. The 12-character TAC is an internal composite code used by CDTFA’s geocoding system to determine precise tax allocation, including district tax overlays and in-lieu components. Taxpayers are not required to report the 12-character code on returns.

How does USgeocoder determine the 5-digit California tax area code?

USgeocoder geocodes each delivery address and maps it to its actual taxing jurisdictions (county + incorporated municipality + applicable special districts), not mailing city names or ZIP codes.

The 5-digit California tax area code structure is:

First two digits: County
Last three digits: Municipality (incorporated city)
If the address is in an unincorporated area, the last three digits are 998.

This geocoding approach helps ensure the correct allocation of tax area codes.

Why does the CDTFA API return a 12-character TAC?

The 12-character TAC is generated internally by CDTFA’s mapping and allocation systems to determine precise tax rates and district overlays. It is not a required reporting field for taxpayers.

Conclusion

California’s tax area codes play a central role in allocating local sales and use tax. Unlike Louisiana’s four‑digit domicile codes, California uses five‑digit codes. By understanding the structure of these codes, businesses can ensure compliance and avoid misallocating local tax. Always refer to CDTFA‑531‑FL1 for the correct codes and use the CDTFA’s tax rate lookup tool to confirm current rates. For automated matchings for both tax code and tax rate, consider tools such as USgeocoder’s Online Lookup Tool and API to streamline the process.

California Sales Tax Area Codes for Sales Tax Reporting