noun
end-of-year settling of accounts
Refers to the traditional practice of settling financial accounts at the end of the year, especially in business contexts.
年末は節季仕舞いで忙しい。
The end of the year is busy with settling accounts.
Compound of 節季 (せっき, 'end of a season/year') and 仕舞い (しまい, 'finishing, closing'). The exact historical derivation is uncertain, but the term is conventionally associated with year-end account settlement.