California Reverse Sales Tax Calculator (CDTFA Rates)
Calculate the original pre-tax price from any California receipt or invoice total. Pre-loaded with California's 9.21% statewide average rate and adjustable for Los Angeles (9.50%), San Francisco (8.625%), and all municipal districts.
California statewide rate is 7.25%. Enter your exact city or district rate (e.g., 9.50% for LA, 8.625% for SF) to calculate from your receipt.
How California Sales Tax Works: CDTFA Anatomy
California has one of the most layered sales tax frameworks in the United States. Unlike states with uniform local additions, California sales tax consists of a mandatory statewide base rate of 7.25% plus local Transactions and Use Taxes (district taxes) that vary down to the city and neighborhood level.
Components of California's 7.25% Base Rate:
- 3.9375% — State General Fund (operates schools, healthcare, public services)
- 0.50% — Local Public Safety Fund (Proposition 172)
- 0.50% — Local Revenue Fund 1991 (health and social services realignment)
- 1.0625% — Local Revenue Fund 2011 (public safety realignment)
- 1.25% — Bradley-Burns Uniform Local Sales and Use Tax (1.00% local city/county operational + 0.25% county transportation funds)
When city councils, county boards, or voters pass local ballot measures to fund specific projects (like BART, LA Metro, or community parks), additional district taxes of 0.10% to 3.50% are tacked on, bringing final checkout rates between 7.25% and 10.75%.
Tax Rates in Major California Cities (2026)
Step-by-Step Calculation: Backing Out 9.50% Los Angeles Sales Tax
Suppose you purchase computer hardware in Los Angeles, California, and the final receipt total is $547.50 (inclusive of the 9.50% LA combined tax).
⚠️ Common bookkeeping mistake: If you mistakenly subtract 9.5% from $547.50, you calculate $495.49 — shorting your books by $4.51. Division is the mathematically exact reverse operator.
California Statutory Exemptions & Rules
🥗 Unprepared Groceries (0%)
Under CDTFA Reg 1602, raw groceries, vegetables, meat, bread, and milk for home consumption are completely exempt from California sales tax. Hot prepared meals and restaurant food are fully taxable.
💊 Prescription Medications (0%)
Medicines dispensed pursuant to a licensed physician prescription and medical implants are legally exempt from sales and use tax in California.
📋 Resale Certificates
Wholesalers and retailers holding a valid California Seller's Permit can issue CDTFA Form CDTFA-230 to purchase inventory tax-free for subsequent resale.
Official California Revenue Department
Verify your address-specific district rates or file your periodic sales and use tax returns directly with the state authority:
🏛️ Visit California CDTFA Rate Portal →California Sales Tax FAQs
What is the sales tax rate in California?
California has a statewide base sales tax rate of 7.25%. This base rate includes 6.00% for the state general fund and 1.25% for mandatory local county and city operational funds (Bradley-Burns Act). When city and county special district taxes are added, actual combined rates range from 7.25% to 10.75% depending on the exact municipality.
How do I calculate reverse sales tax for a California receipt?
To reverse calculate California sales tax from a final receipt total, convert your local combined tax rate to a decimal divisor (1 + rate/100) and divide the total by that number. For example, in Los Angeles where the tax rate is 9.50%, a receipt total of $109.50 divided by 1.095 equals $100.00 pre-tax. The sales tax paid is $9.50.
Why does California have different sales tax rates by city and county?
Under California law, voters and local governments can approve special district taxes (transactions and use taxes) to fund transportation, public safety, parks, or municipal services. These local add-ons can increase the 7.25% state base by up to 3.50%, creating rates such as 9.50% in Los Angeles, 8.625% in San Francisco, and 10.75% in parts of Alameda County.
What items are exempt from sales tax in California?
Under California Department of Tax and Fee Administration (CDTFA) Regulation 1602, most unprepared food products for home consumption (groceries), prescription medicines, and medical devices are exempt from sales tax. However, hot prepared food (like restaurant meals), alcoholic beverages, carbonated drinks, and general retail goods are fully taxable.
How do small businesses back out sales tax for CDTFA tax returns?
California businesses that include sales tax in their marked prices must reverse calculate their gross taxable receipts before filing CDTFA Form 401. Divide gross receipts by 1 + your district tax rate (e.g., 1.095 for 9.5%) to find the true taxable sales amount, then subtract that amount to report the exact sales tax collected.
What is the highest sales tax rate in California?
The highest combined sales tax rate in California reaches 10.75% in certain cities with multiple overlapping district taxes, such as Alameda, Albany, Newark, and South Gate. In these jurisdictions, divide receipt totals by 1.1075 to calculate the pre-tax price.