Kertaostokseen

Kertaostokseen is a Finnish term used to describe a purchase made as a single, non-recurring transaction. It is formed from kerta (one time) and osto (purchase). The illative form -seen indicates a directional or purposive sense, so kertaostokseen is used in sentences that refer to a one-time purchase or to the scope of such a purchase, for example kertaostokseen liittyvät ehdot (terms related to a one‑time purchase).

In commerce and procurement, the concept helps distinguish occasional, ad hoc purchases from recurring orders, subscriptions, or long-term contracts. Processes, approval requirements, and invoicing can differ between kertaostokset and toistuvia tilauksia. Public procurement contexts may specify whether a supplier should handle a kertaostokseen or a toistuvaan tilaukseen case, influencing how purchases are planned and documented.

Linguistic notes: the term is more common in business, legal, and policy texts than in casual speech. Synonyms or near-synonyms include kertaostos and yhden kerran tehtävä osto. Related terms include toistuva osto (recurring purchase) and tilaus (order). The concept is part of broader discussions on procurement modalities, contracting, and budgeting, where distinguishing one-time purchases from ongoing obligations can affect risk assessment and financial reporting.

See also: kertaostos, toistuva tilaus, hankinta, sopimusvalvonta.