annual plan; one-year plan
A plan or program covering a one-year period, used in business, education, and personal contexts.
The company announced its annual plan for the next fiscal year.
The school's annual plan includes field trips and sports day.
年次計画 is a more formal synonym for 'annual plan', often used in official documents, while 年間計画 is common in everyday contexts.
長期計画 refers to a long-term plan spanning multiple years, contrasting with the one-year scope of 年間計画.
Compound of 年間 (one year, annual) and 計画 (plan, project).