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.
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Did the 1981 rewrite of Public Resources Code section 25134 change section 6353's earlier incorporated definition of cogeneration technology?
No, in Board staff's stated view. Because section 6353 had adopted section 25134 by reference and the Legislature showed no contrary intent, staff continued using section 25134 as originally enacted.
Did California sales tax apply when a federal construction contract passed title to purchased property outside California before the property entered the state?
No sales tax applied under that assumption, regardless of classification. The letter did not review the contract or expressly decide a later use-tax issue for those items.
Was the Arroya adaptive downhill skiing system exempt as a prescription medicine?
No. California taxed the maneuverable sled and strap system because it was medical or adaptive equipment outside every cited Regulation 1591(b) exception.
Could one equipment lessor sell ex-tax rental property at fair market value to a sister lessor and lease it back tax-paid?
Yes on the stated facts. A fair-value taxable sale to a separate sister lessor made the leaseback and later public subleases tax-paid.
Were pole and channel-letter signs entirely fixtures, or did construction materials and exempt installation labor apply?
They were not entirely fixtures. Pole construction used materials before a prefabricated sign was installed; channel letters fabricated in place used materials and substantial installation labor.
Were meals sold to members at a church retreat exempt as religious-organization fundraising, and could prior auditor advice prevent the assessment?
No. Feeding retreat attendees and offsetting dining-hall costs was not fundraising, prior auditor advice could not create an exemption, and the negligence penalty applied to the full determination.
Were American Kennel Club dog-show superintendents retailers or consumers of premium lists, catalogs, and other materials used to organize a show?
They were consumers. California treated the materials, including catalogs, as incidental to the superintendent's event-organizing service on the stated facts.
Did every implanted medical device qualify as an exempt prosthetic device?
No. A prosthetic device had to be fully worn on or in the body and replace or assist a natural body part; a temporary implant could qualify under that separate test.
Could a manufacturer recover tax on unused spare and replacement parts sold after facilities were sold or shut down?
Yes. Parts kept only in stores inventory were not treated as used in standby service, so their resale after storage qualified under the stated rule.
Were hot or cold meals sold by a school through its own vending machines exempt when students and nonstudents both used them?
School sales to students were exempt, but nonstudent sales were taxable unless another rule applied. For mixed-use machines, California allowed a reasonable representative test allocating receipts…
After August 1, 1983, were school-owned vending-machine sales of hot or cold food exempt when made to students, and how were mixed sales handled?
Student sales were exempt, but nonstudent sales generally were taxable. A school could use a reasonable, preapproved representative test to allocate mixed vending-machine sales.
Was a graphic designer's finished art taxable when it was sent to the client's printer but the designer claimed to retain the originals and title?
Yes. Temporarily delivering finished art to printers for the clients' benefit was treated as a taxable lease, and transactions explicitly transferring title to clients were taxable retail sales.
Was an employer's payment still a nontaxable cafeteria subsidy when employees paid nothing and the employer covered all operating costs plus management fees?
No. Because the employer made the only payment, the entire amount was taxable gross receipts rather than a subsidiary payment supporting customer purchases.
Was integrating a new computer with an existing California system mere testing before out-of-state use?
No. Running business programs and developing compatibility was first functional use in California, so use tax applied despite later removal.
Was the Cambridge Diet and Nutrition Bar exempt despite its weight-loss-program and nutritional-supplement descriptions?
Yes. The carob-coated bar was exempt because bar form was not one of the liquid, powder, tablet, capsule, or other forms excluded by section 6359.
Were hot meals included in a river-rafting expedition merely incidental supplies, or taxable meal sales requiring allocation from the lump-sum trip price?
They were taxable meal sales. The operator was a retailer, and a reasonable portion of the package price had to be allocated to hot prepared meals.
Were separately invoiced costume selection, cleaning, dyeing, and alteration charges taxable with movie and TV costume rentals?
Yes when performed under the rental agreement. The producer had to pay for those services to obtain and use the selected costumes.
How was a fixed hourly aircraft-engine pool taxed when failed engines or modules were exchanged for serviceable substitutes?
The pool was an exchange of used property for reconditioned similar property, and tax applied to the manufacturer's entire hourly program charge.
Could equipment be tax-paid when the lessor paid sales-tax reimbursement to a seller with no permit and had lost the purchase order?
Yes on this record. Other evidence showed reimbursement was paid, and missing permit did not prevent seller from being retailer able to collect it.
Which charges were taxable when customers bought or leased hand-held receivers and separately paid for market data, exchange access, sports information, and service?
Device sales and monthly rentals were taxable; separately stated database, exchange, sports-information, service-contract, and damage-waiver fees were not.
Could a company aircraft carrying its own employees qualify as an instrument of interstate commerce, and what defeated the exemption?
Yes; common-carrier status was not required for interstate employee flights. But this aircraft's California intrastate flight and 131 California days versus 49 outside days supported tax; the…
Could a privately operated corporate aircraft qualify for continuous interstate-commerce treatment when it transported company employees but also made intrastate flights?
Employee transport could be interstate commerce without common-carrier service, but the exemption failed here because a California intrastate flight broke continuous interstate use.
Which organizations were treated as consumers rather than retailers for vending-machine items sold for 15 cents or less under section 6359.45?
Three independent groups: all nonprofit organizations regardless of purpose, all charitable organizations, and all educational organizations whether for-profit or nonprofit. California based the…
Would a senior boarding house keep its meal exemption if it leased some rooms to a related corporation for a transient hotel open to the general public?
No. Allowing transient occupants under age 62 meant the institution no longer served exclusively as a principal residence for people age 62 or older.
Did a buyer's unauthorized removal of a modified aircraft from a California facility count as taxable delivery by the seller?
No. The buyer's agents took the aircraft without notice or right, so the seller did not voluntarily deliver it in California. After arbitration restored the aircraft, the seller completed checkout…
Was the guitar included in a 30-week lesson contract incidental to instruction, or was the studio making a taxable installment sale of the instrument?
The guitar was a taxable sale, not incidental to lessons. Sheet music, picks, and strings were incidental materials consumed by the studio.
Were free pictorial church directories exempt premiums or works of art when used to promote portrait sales?
No. Families received directories for attending photo sessions without buying portraits, so the company consumed taxable promotional property.
How did a 1983 California memorandum apply the amended section 6020 to diagnostic, cosmetic, and animal images?
Producers consumed inputs for qualifying human diagnostic images, while sales of purely cosmetic and animal images were taxable. Mixed lump-sum charges required allocation. A later memorandum…
Were charges for folding customer-furnished wiping cloths taxable processing or nontaxable service labor?
They were taxable. The Board treated folding the cloths into final form for a consumer as a processing sale under section 6006(b).
Did an insurer's tax protection prevent use tax on computer equipment rented to its independent agents?
No. Counsel found the agents were independent operators, so use tax measured by their rental receipts affected the insurer only minimally and indirectly and was proper.
Were separately stated postal C.O.D. fees taxable when a portrait studio prepaid the Post Office and recovered the charges from customers?
Yes. The C.O.D. collection fee was part of taxable gross receipts because the studio prepaid it and bore the risk; separately stated postage remained excludable.
Was labor taxable when customers supplied firewood permits and a business selected, cut, split, and delivered the timber?
Yes. The customers indirectly furnished the timber through their permits, and cutting and splitting it into firewood was a taxable fabrication sale.
Were programs maintained for 14 counties prewritten repeated sales or custom programs ordered by one joint-venture customer?
The recommendation treated the counties as one joint venture and the programs as custom work for that customer, making individual county payments immaterial.
Could a wallboard maker buy lignosite, retarders, and potassium sulfate for resale because they remained in and improved finished gypsum?
No. Their primary functions occurred during manufacturing, so they were taxable aids despite remaining in the wallboard; paper-chemical issues remained open for evidence.
When does a chemical's presence in a finished product show that the manufacturer bought it for resale rather than as a taxable processing aid?
Only when the chemical's physical presence produces the desired finished-product benefit; merely remaining after causing a manufacturing reaction is not enough.
Could an unregistered for-hire hauler still be a carrier for California's interstate-commerce sales-tax exemption?
Yes. The hearing officer found that repeated for-hire hauling, specialized equipment, and three trips established carrier status despite missing registrations. The auction sale was not an exempt…
Which dialysis kits, accessories, replacement parts, tray contents, and dressings qualified as exempt related supplies?
California exempted listed dialysis kits, accessories, and machine parts, but taxed technician or peripheral supplies and lump-sum mixed trays unless allocated.
Which medical oxygen delivery equipment qualified when sold or rented for physician-directed personal use?
Listed liquid-oxygen systems, concentrators, cylinders, regulators, humidifiers, stands, carts, masks, tubing, and necessary accessories qualified under the stated conditions.
When were an advertising agency's printed mailers sent to out-of-state addresses exempt from California sales tax?
The agency's sale was exempt when its customer contract required out-of-state mailing and the agency mailed the pieces there. But if the agency bought printing as the customer's agent, the printer…
Who owed tax on parts used to rewrap and reinstall existing cabinets under lump-sum contracts?
The cabinet contractor consumed all parts it furnished, and its subcontractors consumed their own materials and parts. Customers should not be billed sales-tax reimbursement.
How did California classify steak markers that a restaurant served together with steak meals?
The Board memorandum treated the steak markers as sold along with the meals. It did not separately state statutory or purchase-for-resale mechanics.
Were transcutaneous electrical nerve stimulators exempt prosthetic devices?
Only when fully worn on the user's body. California exempted fully worn stimulators but taxed larger units that were not fully body-worn.
Could a dry-ink-toner manufacturer buy methylene chloride for resale when much of it evaporated during production?
Yes. It supplied essential propylene oxide and amylene that entered the toner carrier coating, and the evaporated portion served only that incorporation purpose.
Did ordinary intravenous administration sets qualify as programmable drug infusion devices?
No. California taxed the listed tubing sets because they used traditional drip or on/off delivery, were not fully worn or implanted, and did not automatically meter medicine.
Was powdered Cambridge Diet exempt as a complete dietary food or because another breakfast substitute was exempt?
No. It was a taxable dietary supplement designed for weight loss, with only 330 calories per three-meal day, and was not comparable to Slender.
How did the federal Highway Revenue Act of 1982 affect California's sales-tax measure for fuels, tires, trucks, trailers, and related items?
Fuel and tire manufacturer or floor-stock taxes remained included, while the new federal retail truck and trailer taxes were excluded.
How did the Highway Revenue Act of 1982 change California's treatment of federal fuel, tire, truck, and trailer taxes?
Fuel, tire, and floor-stock taxes stayed in California's measure, while new federal retail taxes on covered trucks and trailers were excluded.
Which oxygen concentrator and delivery-system items qualified for California's medical-oxygen exemption?
California exempted the concentrator, tanks, regulators, humidifiers, cannulas, masks, stands, carts, and tubing when provided for personal use as directed by a physician.
Did inserting each purchaser's name and address into a medical or dental software package make the whole program custom?
No. The basic package remained taxable prewritten software, but separately stated charges for the name-and-address tailoring were excluded modifications.
Did a fair-market-value purchase option turn a five-year hospital equipment lease into a sale if market value was nominal at the end?
No. Assumed good-faith future-market option stayed bona fide despite nominal end value; tax-paid true lease's 3% commencement fee was nontaxable.
Could consultation billed as 'Design Time' be treated as nontaxable preliminary art without purchase orders, work orders, or clearly identified preliminary-art charges?
No. The consultation related to taxable mechanicals and camera-ready art, and merely relabeling it did not prove preliminary art; without the required records and clear billing, the entire charge…
Were per-use ECG analysis fees taxable rent when physicians also paid a flat monthly charge for the office terminal?
No. Separately stated per-analysis process fees were services; the flat monthly terminal charge remained taxable rent on the stated assumption.
Were per-use ECG analysis charges taxable rental receipts when physicians also paid a flat monthly terminal rental?
No. California treated the separately stated per-use analysis amounts as service fees, while assuming the flat monthly equipment rental remained taxable.
Were mandatory service, technical-specialist, delivery, and round-trip mileage charges connected with leased tools taxable?
Yes, when required for the lease. A later optional callback service was not taxable, and only separately identified direct delivery could qualify for exclusion.
Did the custom-program exclusion apply to special-order application programs for programmable calculators delivered on cards or PROM modules?
Yes. California treated a programmable calculator as a computer and magnetic cards or PROM modules as storage media for qualifying custom applications.
Was diesel fuel for California sportfishing vessels exempt as a watercraft component part or common-carrier purchase?
Generally no. Diesel fuel was a consumable supply, not a component part. Although public-for-hire sportfishing vessels could be common carriers, fuel for trips beginning and ending in California did…
Did diesel bought for a sportfishing trip that began and ended in California qualify for the carrier exemption?
No. Although the passenger vessel could be a common carrier, the fuel was not shipped under a bill of lading to an out-of-state destination.
Were rough catalog-layout sketches preliminary art when copies were sent to separate production contractors and the artist kept the originals?
No. The sketches were the artist's finished art because they directed preparation of the advertisement rather than merely demonstrating an idea for approval; transferring copies for consideration…
Were catalog-page layouts taxable when the artist kept the original rough sketches but gave production copies to the client's other contractors?
Yes. The copies were transferred for consideration and used to prepare the final advertisement; the layouts were the artist's finished art, not preliminary art created solely to demonstrate an idea…
Did using contractor-owned equipment on a United States contract exempt its repair or maintenance charges from California tax?
No. Government-contract use did not change the ordinary repair rules; mandatory maintenance sold with equipment was taxable, while separate repair agreements followed Regulation 1546.
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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.