らいねん来年rainen
1.

The year that follows the current year, commonly referred to when planning or anticipating future events.

2.

The year immediately after the present year, often used in contexts involving future intentions or schedules.

3.

A term indicating the next calendar year, particularly in discussions about time-sensitive matters or projections.

Example:

健は来年で15歳になります。

さらいねん再来年sarainen
1.

The year that follows the upcoming year, specifically the second year from the present year.

2.

The year that is two years ahead of the current year, marking a future point in time.

Example:

祖父は、再来年引退する予定です。

らいねんど来年度rainendo
1.

The upcoming fiscal year following the current one, often used in the context of budgeting or planning.

2.

The period that begins after the conclusion of the current year, typically encompassing a full 12 months ahead.