California State Tax Rulings

Free plain-English summaries of state tax letter rulings and advisory opinions issued in California, with full citations and the original source on every page.

5,022 rulings · Updated September 22, 2026
5,022 rulings

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Did deleting notes and resequencing pages make OCR conversion of customer documents into disk files a nontaxable information service?

No. The recommendation found those tasks minor; the contract's true object was taxable conversion from paper to computer-readable disk.

1991-05-30

Was a florist's labor arranging fresh flowers in customers' vases nontaxable installation labor?

No. California treated arranging the flowers as taxable fabrication, while merely placing unarranged flowers as directed could be treated as transportation rather than installation.

1991-05-29

Could a separately stated flat monthly charge qualify as nontaxable custom programming even though it was not based on time and materials?

Yes in the recommendation. The parties genuinely provided customer-specific modifications, and no rule required hourly pricing or substantial changes when separately stated.

1991-05-25

Was machinery sold interstate-tax-free when the buyer’s repair contractor rewired it at the seller’s California plant before common-carrier shipment?

No. The buyer’s contractor took delivery as its California agent and functionally used the machines by rewiring them before shipment. The recommendation left the audit unchanged.

1991-05-24

Were prefabricated fireplace packages sold to an installing contractor fixtures purchased for resale or materials consumed in construction?

The memorandum recommended treating the entire package as materials because framing, chimney, fire-stop, and code-compliant installation work was extensive, although it called the issue doubtful.

1991-05-24

Was a home-based artist an employee providing services or an independent retailer making taxable Yellow Pages pencil layouts?

She was an independent contractor making taxable retail sales because she controlled her work and fabricated layouts for a consumer even with customer-furnished materials; misleading customer advice…

1991-05-22

Did portable neuromuscular electrical stimulators qualify as prosthetic devices when patients sometimes set them on a bed or table?

Yes, if designed to be easily portable and worn on the body; setting the unit down for convenience during therapy did not defeat qualification.

1991-05-17

Were costume-design fees taxable when costumes were later fabricated and sold under separate contracts?

Generally no. The design contracts did not require costume purchases, but fees allocable to transferred sketches or patterns remained taxable.

1991-05-16

Did crop-dusting qualify as common-carrier use because the aircraft carried treatment material from a loading point to the fields?

No. The flight's purpose was the agricultural service of applying material, not transporting property for compensation, so it did not qualify as common-carrier use.

1991-05-14

Which dialysis catheters, kits, and related products did California treat as exempt?

Items necessary and integral to exempt dialysis could qualify, but pheresis uses, gloves, and unallocated mixed taxable-and-exempt kits did not.

1991-05-14

When do firefighting flights and rotorcraft external-load operations count as common carriage for California's aircraft exemption?

They can qualify when they transport persons or property for compensation, are offered indiscriminately, and are authorized by the operator's FAA certificate. Water-dropping does not qualify.

1991-05-14

Does crop-dusting count as common carriage because the aircraft carries dusting material from a loading point to the fields?

No. The flight performs an agricultural crop-dusting service rather than transporting property for compensation, so it does not count as common carriage.

1991-05-14

Was a vehicle lease exempt when a federal contractor used the vehicle only on a Navy contract and passed the cost to the government?

No. The contractor—not the United States—leased and operated the vehicle, so the lease was taxable whether cost was direct or overhead.

1991-05-13

Did a Texas vehicle lessee avoid California tax or receive credit when the lessor had paid Texas tax before the car moved to California?

Rent escaped tax only if the lessor met California's historical exception; the lessee got no credit for tax imposed on the lessor.

1991-05-10

Were a mosquito-abatement district's transfers of excess fish for cash, materials, or services taxable sales?

Yes, assuming at least three transfers in 12 months. Cash, materials, or services were consideration for taxable retail sales; fewer transfers could qualify as occasional sales.

1991-05-10

Was a separately charged federal annual trailer inspection taxable when it was optional and occurred after the trailer sale?

No. An optional post-sale inspection was not a service that was part of the trailer sale, so its fee was excluded from taxable gross receipts.

1991-05-09

Were insurance-program inserts sent to a bank for inclusion with credit-card statements exempt printed sales messages?

Conditionally yes. The inserts qualified by content, and the bank could be the insurer's mailing-house agent only if the mailing contract was arm's length and paid true compensation.

1991-05-09

Was a trailer seller's optional federal periodic-inspection charge taxable when the inspection occurred after the sale?

No, on the stated assumptions. A genuinely optional inspection performed after the trailer sale was not a service that was part of the sale.

1991-05-09

Did section 6353 exempt CNG delivered through a natural-gas company's distribution system to a fueling station and public dispenser?

Yes. The Board confirmed that the company's CNG remained exempt when delivered through its distribution system to a fueling station for sale to consumers as motor-vehicle fuel.

1991-05-09

Was ToppKrisp Nutritional High Fiber Meal exempt when counsel assumed it was a ready-to-eat wafer, cracker, or cookie?

Yes, conditionally. Assuming ToppKrisp was a ready-to-eat wafer, cracker, or cookie, it was exempt food rather than a listed-form dietary supplement.

1991-05-09

Were personalized response letters assembled from original text, stored paragraphs, variable information, and illustrations taxable?

Yes. California treated them as taxable multiple-copy personalized letters, not professional services or processing of customer-furnished information.

1991-05-09

Were dry and liquid malt extracts exempt food products when brewing-supply retailers sold them for making beer?

Yes. Malt extract remained a food product even when a brewing-supply retailer sold it for use in beer or other alcoholic malt beverages.

1991-05-08

Could a seller deduct type-composition charges when it also imprinted and sold napkins, ribbons, and wedding favors?

No. Although type composition alone could be nontaxable, it was part of the seller's printed-item sales, so all related service costs remained taxable gross receipts.

1991-05-03

Was a hospital's rental of large fixed gaseous-oxygen tanks exempt or taxable only to the supplier on purchase price?

Rent was taxable. The correction treated the fixed vessels as leased fixtures, and hospital control defeated the patient-use exemption.

1991-05-03

Were medicated bandages and syringes containing medicine exempt in California?

Medicated pads and dressings could qualify as medicine; a syringe sold filled with exempt medicine qualified as its container, while an empty syringe was taxable.

1991-04-30

Did a classic-car auctioneer need a seller's subpermit at each hotel where it held recurring auctions lasting under 30 days?

No under the Board's policy. Temporary auction locations did not require subpermits, so the local tax went to the countywide unallocated pool rather than the host city.

1991-04-30

Did a foreign airline owe use tax when disposable supplies were assembled into meal trays in California for use after takeoff?

Generally no. The recommendation applied the out-of-state-use exclusion to disposable supplies, but not reusable items or kits given out in California.

1991-04-29

Were large roof-truss sales construction contracts, or were the seller's flat delivery charges taxable retail receipts when its boom held trusses for the buyer's crew?

They were taxable retail sales. The seller was not hired to install the trusses, and title passed while they were still personal property when the buyer's crew took control.

1991-04-29

Did lifting large trusses into place with a delivery-truck boom make the seller a construction contractor or exclude its delivery charge?

No. The seller had no contractual installation duty or unique installation expertise, so it made taxable retail sales and its $100 delivery charge was taxable.

1991-04-29

Did a permanently implanted Port-A-Cath qualify as exempt prescription medicine?

No for the described drug-infusion use. California treated the Port-A-Cath as a taxable device because its primary purpose was repeated delivery of medicine.

1991-04-26

Did a federal prescription-only legend automatically exempt a dental product from California sales tax?

No. A federal prescription-only or dental-use legend did not itself exempt a product. The item still had to meet California's medicine definition and the required sale conditions. The letter…

1991-04-26

Could an equipment lessee switch midlease from paying tax on the prime rent to collecting tax on its sublease and recover the earlier tax?

No. Paying use tax on the prime-lease rent fixed the lessee's election, so the sublease was not taxable and the earlier tax was not refundable.

1991-04-26

Could a California manufacturer transfer engine title after 1991 completion, hold the engines until 1992 and retain exemption on later Florida shipment?

Yes, if the amended contract required advance manufacture and later outside shipment, shipment occurred within a reasonable time and section 6396 was followed.

1991-04-26

How did California treat installation, support, maintenance, custom modifications, consulting, expenses, and tax timing for software delivered on media?

Only qualifying installation testing was excluded; required support and bundled maintenance were taxable, while qualifying custom work and standalone consulting could be excluded.

1991-04-26

Can firefighting and external-load helicopter operations qualify for California's aircraft exemption when they are authorized under FAA Part 133 rather than Part 135?

Yes, potentially. Part 135 is not required, but the flight must be common carriage under California's definition and must be authorized by the operator's actual FAA certificate.

1991-04-26

Did a taxable sale of business fixtures occur when buyers took possession but the lender rejected their loan assumption, a condition of the purchase agreement?

No. The failed loan-assumption condition prevented the sale. The buyers' possession could amount to a lease, but no tax was due because no rent was paid.

1991-04-24

Were Food for Life soups and Super Oats exempt even though the product line was marketed as a weight-loss formula?

Yes. The soups and Super Oats were exempt because soups and cereals remained listed food products when sold in dehydrated form.

1991-04-24

Were lump-sum charges for designing, building, transporting, installing, staffing, and striking video-production sets taxable?

The completed sets were taxable leases and bundled design, transport, personnel, and strike labor joined the measure; only installation received a two-percent reaudit allowance.

1991-04-23

Did a hotel's 'Operating and Lease Agreement' create a taxable lease of the hotel's furniture and equipment?

No. The Hearing Officer recommended management treatment because rent was not guaranteed, fee used gross receipts, and controls were atypical.

1991-04-23

Were lump-sum charges for designing, building, delivering, staffing, and dismantling temporary video sets taxable as lease receipts?

Yes, except installation. The package transferred completed sets, so design and mandatory bundled charges were taxable lease receipts.

1991-04-23

Was an in-place sale of a central cooling and ice-storage facility subject to sales or use tax?

No. Because neither seller nor buyer would remove any part of the integrated facility from the realty, the transfer was subject to neither sales nor use tax. The source said tax was due only during…

1991-04-23

Which separately priced features of optional computer and software maintenance contracts were taxable?

Software-update rights and tangible media were taxable; optional hardware maintenance and support were not, with use tax due on the provider's cost of replacement parts.

1991-04-18

Was the Finhalsa meal-replacement bar exempt even though other sports-nutrition products in the same review were taxable?

Yes. Finhalsa was an exempt food bar because it was like candy and was not in a listed liquid, powder, tablet, capsule, or similar supplement form.

1991-04-18

Was an affiliate's payment after equipment-lease defaults entirely taxable consideration for transferred leases and equipment?

No. The hearing officer recommended treating most of it as a prior-obligation payoff and reducing taxable receipts to $31,748 salvage value.

1991-04-16

Was an advertising agency's monthly management fee nontaxable consultation when the agency also sold marked-up advertising materials?

Not on the evidence provided. Because the non-agent agency charged a general overall fee and did not document specific nontaxable services, 79.3% of each $2,800 fee was taxable based on the ratio of…

1991-04-16

When an auto lessor timely paid tax on both vehicle cost and rental receipts, which payment controlled its lease-tax election?

The first tax payment controlled. Cost-first meant tax-paid leasing; rent-first meant continuing tax on rent, regardless of the lessor's intent.

1991-04-15

Was a removable camper's value included in use tax on a pickup-and-camper purchase from an individual?

No. The recommendation treated the removable camper as a separate occasional-sale item, taxed the truck at $10,700, and deleted the negligence penalty.

1991-04-11

How was a California computer lease taxed when the lessor had bought and used the computers outside the state and paid another state's tax?

If the computers had more than 90 days of prior out-of-state use, the lease was taxable on rent; the lessee received no credit for tax paid by the lessor.

1991-04-11

Did a later federal audit disallowance undo title that had already passed to the United States under a defense contract?

No. When a contract's title clause transferred overhead materials upon issuance, processing, or reimbursement, a later cost disallowance did not erase that completed transfer.

1991-04-10

Did a later DCAA disallowance of a federal contractor's cost undo an earlier transfer of overhead-material title to the United States?

No. When the contract's title clause had already vested title upon an earlier trigger, a later audit disallowance did not erase that transfer.

1991-04-10

Did a grocer owe California use tax when an out-of-state vendor shipped donated computers directly to schools that accumulated shoppers' receipts?

No on the stated facts. Donation and title transfer occurred while the computers were out of state, and the schools were donees rather than customers because they paid no consideration and had no…

1991-04-09

Were a private insurer's purchases for operating a Medicare-administration office exempt as purchases by a United States instrumentality?

No. California said the insurer was neither the United States nor a qualifying federal instrumentality. A separate resale exemption might apply to property whose title passed to the United States…

1991-04-09

How did lump-sum versus separate billing change the tax treatment of dental appliances dispensed to patients?

With a lump-sum service bill, the dentist was the appliance consumer and paid tax to suppliers. A separate item charge made the dentist a retailer requiring a permit and tax.

1991-04-04

How was a combined postage-and-handling fee allocated between a nontaxable personalized diet-analysis service and taxable nutrition pamphlets?

Actual postage could be excluded. The remaining handling was presumed taxable unless records showed the portion attributable to the nontaxable report rather than the taxable pamphlets.

1991-04-03

Were personalized diet-analysis reports, included and extra nutrition pamphlets, out-of-state shipments, and postage-and-handling charges taxable?

The individualized report was a nontaxable service, but all pamphlets were taxable sales; qualifying out-of-state pamphlets were exempt and only supported postage and report handling escaped tax.

1991-04-03

Was a trust's transfer of a hot-air balloon to a new corporation solely for its first-issue stock subject to sales or use tax?

No, assuming the corporation was still commencing and its first-issue stock had no measurable value. The Board treated the balloon as general tangible property, not an aircraft under Regulation 1610.

1991-03-28

Was a carbonated soft drink exempt when a school district sold it to a student together with an exempt meal?

Yes, if the drink and meal had one established combination price. A separately priced or stand-alone soft drink remained taxable even when rung up with food.

1991-03-28

Were chiropractors, acupuncturists, nutritionists, and massage therapists consumers or retailers of vitamins, minerals, supplements, and orthotic products?

Treatment-related chiropractors were consumers, while acupuncturists, nutritionists, and massage therapists were retailers even with lump-sum service billing; general chiropractor sales were retail too.

1991-03-28

Was a trust's transfer of a hot-air balloon to a new corporation taxable when the trust received only all of the corporation's first-issue stock?

No, on the stated assumptions. A balloon was not aircraft under Regulation 1610, but a transfer solely for first-issue stock of a commencing corporation was nontaxable.

1991-03-28

Were an unlicensed designer's construction plans nontaxable original design services or taxable drawings made from another person's specifications?

Original ideas and lawful design services were nontaxable, but merely putting another person's specifications into blueprints was taxable and required a seller's permit.

1991-03-27

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These are official tax letter rulings and advisory opinions issued by California's revenue authority in response to questions from specific taxpayers about how the tax law applies to their facts. A ruling is binding on the department only for the taxpayer who requested it and cannot be relied on by anyone else, but it is strong evidence of how the state reads the law. Every ruling above has a plain-English question and short answer, plus a link to the full original source.

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