Principal Business Code Lookup

The Internal Revenue Service, along with other government agencies use the principal business code to classify the main type of product sold or services offered. Whenever you need to classify the products and services your business uses, indicate it using the principal business code. If you ever wonder what’s my federal principal business code, check the list below and find the code that applies to the specific area your business is operating.

The principal business codes are different for every industry and services/products. Look up the principal business code to enter on your documents by pressing CTRL+F or Command+F if you’re on macOS from the list below.

Farming, Forestry, and Fishing

Animal products

  • Beef cattle ranching and farming – 112111
  • Cattle feedlots – 112111 
  • Dairy cattle and milk production – 112120 
  • Hog and pig farming – 112210
  • Poultry and egg production – 112300  
  • Sheep and goat farming – 112400 
  • Animal aquaculture – 112510
  • Other animal production – 112900

Crops and farming

  • Floriculture, greenhouse, and nursery production – 111400
  • Vegetable and melon farming – 111210 
  • Oilseed and grain farming – 111100
  • Other crops – 111900
  • Tree nut and fruit farming – 111300

Fishing and hunting/trapping

  • Fishing – 114110
  • Hunting and trapping – 114210

Logging and foresty

  • Forest nurseries and gathering of forest products – 113210
  • Logging – 113310
  • Timber tract operations – 113110

Mining

  • Coal mining – 212110
  • Gas and oil extraction – 211110
  • Metal ore mining – 212200
  • Other nonmetallic mineral mining and quarrying – 212390
  • Clay, gravel, sand, etc. mining and quarrying – 212320
  • Stone mining and quarrying – 212310
  • Support activities for mining – 213110

Support activities for forestry and agriculture

  • Animal production/support activities – 115210
  • Crop production/support activities – 115110
  • Foresty/support activities – 115310

Utilities

  • Electronic power generation, distribution, and transmission – 221100
  • Natural gas distribution – 221210
  • Water, sewage, and other water systems – 221300

Construction

  • Nonresidential construction – 236200
  • Residential constructing – 236110

Heavy and civil engineering 

  • Highways, street, and bridge – 237310
  • Land subdivision – 237210
  • Other heavy and civil engineering construction – 237990
  • Land subdivision – 237210

Specialty trade 

  • Building finishing contracts – 238300
  • Electrical contracts – 238210
  • Foundation, building exterior, and structure contracts – 238100
  • Other building equipment contracts – 238290
  • Other specialty trade contracts – 238900
  • Plumbing, heating, and air-conditioning contracts – 238220

Manufacturing

Apparels

  • Apparel accessories and other apparel – 315990  
  • Apparel knitting materials – 315100
  • Cut and sew apparel contractors – 315210
  • Men’s and boy’s cut and sew apparel – 315220
  • Women’s and girl’s cut and sew apparel – 315230
  • Other cut and sew apparel – 315290

Chemicals

  • Basic chemicals – 325100
  • Cleaning compounds, toilet preps, and soap – 325600
  • Fertilizer, pesticide, and other chemicals used in agriculture – 325300
  • Medicine and pharmaceuticals – 325410
  • Other chemical products and preps – 325900
  • Paint, coating, and adhesives – 325500
  • Resin, synthetic rubber, etc. – 325200

Computers and electronic products

  • Audio and video equipment – 334310
  • Communications equipment – 334200
  • Computer and external equipment – 334110
  • Measuring and navigational equipment – 334500
  • Reproducing and manufacturing of magnetic and optical media devices – 334610
  • Semiconductors and other electronic equipment – 334410

Electronic appliance and components

  • Electrical equipment – 335310
  • Electric lighting equipment – 335100
  • Household appliances – 335200
  • Other electrical equipment and component

Fabricated metal products

  • Architectural and structural metals – 332300
  • Cutlery and hand tools – 332210
  • Engraving, heat treating, and coating, etc. – 332810
  • Hardware – 332510
  • Machine shops, screws, nuts, turned production, etc. – 332700
  • Other fabricated metal products – 332900
  • Spring and wine products – 332610
  • Shipping container, tanks, and boilers – 332400
  • Stamping and forging – 332110

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