kertaluonteisia

Kertaluonteisia is a Finnish adjective meaning one-off or single-occurrence, used to describe things that happen or are used only once and are not intended to be repeated regularly. The root kerta means time or occurrence, and the suffix -luonteinen denotes “of the nature of.” The form kertaluonteinen is singular; kertaluonteisia is the plural partitive form used when modifying plural nouns (for example, kertaluonteisia kustannuksia, kertaluonteisia tapahtumia).

In practical use, kertaluonteisia describes non-recurring elements in areas such as finance, planning and law. It is commonly found in budgeting, contracts and project analysis to distinguish one-off costs, obligations or events from ongoing or repetitive ones. For instance, a project might incur kertaluonteisia kustannuksia such as a one-time equipment purchase, or a policy may include kertaluonteisia korjaustoimenpiteitä. The term is typically contrasted with toistuva (recurring) or jatkuva (ongoing).

Related terms include yksittäinen (single, individual) and ainutkertainen (one-time in the sense of a unique occurrence). The nuance differs with each word, so choice depends on the precise meaning the writer intends—whether highlighting singularity, rarity, or non-recurrence. The concept is widely used in budgeting, procurement and performance analysis to frame expenditures and obligations that do not repeat in subsequent periods.