Tsumitate NISA; tax-advantaged investment account
A type of NISA (Nippon Individual Savings Account) specifically designed for regular, small-amount investments. Often contrasted with the regular NISA.
See also: 少額投資非課税制度
I buy 10,000 yen worth of investment trusts every month through my Tsumitate NISA.
つみたてＮＩＳＡは少額からの長期投資に向いている。
Tsumitate NISA is suitable for long-term investment starting with small amounts.
Common kana-kanji mixed spelling; the kana part つみたて is often used for clarity.
Kanji spelling using 積立 (accumulation); less common but still seen in official contexts.
From 積立 (つみたて, 'accumulation') + NISA (acronym for Nippon Individual Savings Account). The term was coined when the Japanese government introduced the accumulation-focused NISA variant.