• jednoosobowa działalność gospodarcza: sole proprietorship
• Przedsiębiorstwo Państwowe: state enterprise (has legal personality)
• S.A. (spółka akcyjna): ≈ plc (UK). Minimum share capital PLN 100,000 (approx. €25,000)(has legal personality).
• s.c. (spółka cywilna): "civil partnership", not a partnership or a company, but rather an agreement on the sharing of profits, losses and ownership of a business. Can be likened to a voluntary association.
• S.K.A. (spółka komandytowo-akcyjna): limited partnership with shares. Minimum share capital PLN 50,000 (approx. €12,500).
• sp.j. (spółka jawna): ≈ general partnership
• sp.k. (spółka komandytowa): ≈ limited partnership
• sp.p. (spółka partnerska): ≈ limited liability partnership May also be denoted by the addition of i partner(zy) ("and partner(s)") to the firm's name. Can only be used for the purpose of practicing as a licensed professional listed in the appropriate provision of the Commercial Companies Code. The partners are fully liable for the partnership's debts, with the exception of debts incurred by other partners practicing their licensed profession and employees under their direction.
• Sp. z o.o. (spółka z ograniczoną odpowiedzialnością): ≈ Ltd. (UK). Minimum share capital PLN 5,000 (approx. €1,250)(has legal personality).
• Spółdzielnia: ≈ cooperative. Has legal personality. May also be denoted by the word Spółdzielczy in the firm's name(has legal personality).

References: (Polish) Commercial Companies Code of 15 September 2000 (Dz.U. No 94 item 1037 as amended); (Polish) Civil Code of 23 April 1964 (Dz.U. No 16 item 93 as amended); (Polish) Law on Cooperatives of 16 September 1982 (Dz.U. 2003 No 188 item 1848 as amended)