Breakdown of Налоговый период указан в налоговой декларации.
Questions & Answers about Налоговый период указан в налоговой декларации.
Because период is the grammatical subject of the sentence.
In Налоговый период указан в налоговой декларации, the structure is basically:
- Налоговый период = the tax period
- указан = is indicated / is specified
- в налоговой декларации = in the tax declaration
So период is the thing being talked about, which is why it stays in the nominative.
Указан is the short-form passive participle of the verb указать, meaning to indicate, to specify, or to state.
So:
- указать = to indicate / specify
- указанный = indicated / specified, as a full adjective-like form
- указан = indicated / specified, in the short form used in predicate position
In this sentence, указан works like is specified or is indicated.
A very literal breakdown would be:
- Налоговый период указан = The tax period is indicated
This short form is very common in formal and written Russian.