first year; initial year
Refers to the first year of a period, program, or fiscal year. Often used in business, education, or institutional contexts.
初年度の売上は予想を上回った。
First-year sales exceeded expectations.
He was already making an impact in his first year as a professional.
このプログラムの初年度は基礎を学ぶ。
In the first year of this program, you learn the basics.
The company achieved 100 million yen in sales in its first year.
年度 means a fiscal or academic year in general, whereas 初年度 specifies the very first such year of a program or period.
元年 refers to the first year of an era or reign, while 初年度 refers to the first year of any fiscal, academic, or program period.
初日 means the first day of an event, while 初年度 means the first year of a period, so the two differ in time scale despite both using 初.
Compound of 初 (しょ, 'first') and 年度 (ねんど, 'fiscal/academic year').