TCA

TCA may refer to:

In economics:

• True cost accounting, a method of accounting which seeks to calculate the social, environmental, and economic costs and benefits of a product over its lifespan instead of focusing solely on the cost of its initial purchase.

In education:

• The Classical Academy, a school in Colorado Springs
• The Classical Academy, a school in Escondido

In finance:

• Transaction cost analysis, a method of determining the effectiveness of financial investment portfolio transactions.

In computing:

• Trichromatic Colour Analyser, a software system that turns scanners into colorimeters

In chemistry:

• Trichloroacetic acid, chemical used to precipitate protein in serum
• Taurocholic acid, a bile acid involved in the emulsification of fats
• Tricyclic antidepressant, a class of anti-depressant drugs
• 2,4,6-Trichloroanisole, a chemical compound which is the cause of cork taint in wine
• Theoretical Chemistry Accounts

In biochemistry:

• Citric acid cycle, or tricarboxylic acid cycle, a pathway in cellular metabolism

In sociology:

• The Theory of Communicative Action

In associations:

• Television Critics Association
• Thyroid Cancer Alliance
• Total Community Action
• Trans-Canada Air Lines, predecessor to Air Canada
• Taiwanese Cultural Association
• Taipei Computer Association
• Train Collectors Association
• Transportes Carga Aérea, a defunct Brazilian airline
• Trinity Christian Academy (disambiguation)

In other uses:

• Advanced Telecommunications Computing Architecture, a specification set for carrier grade communications equipment
• Terminal Control Area, a volume of controlled airspace
• Teen Choice Awards
• The Competition Authority (Ireland)
• Total cost of acquisition
• Toxin complex a, an insecticidal toxin complex in the bacterium Photorhabdus luminescens
• The Canadian Amateur, a magazine for amateur radio enthusiasts
• Transport Construction Authority, a former agency of the Government of New South Wales with responsibility for new railway projects in the city of Sydney, Australia
• Turks and Caicos Islands, from its ISO 3166-1 country code