iDeCo Tax Deduction Calculator: How Much Can You Actually Save in Japan?

iDeCo Tax Deduction Calculator: How Much Can You Actually Save in Japan?

Japan’s individual-defined-contribution pension plan — called iDeCo (individual-type Defined Contribution pension, or 個人型確定拠出年金) — is one of the most powerful tax-reduction tools available to anyone earning income in Japan. Unlike an ISA or a standard brokerage account, every yen you contribute to iDeCo comes straight off your taxable income with no cap on the deduction rate. If you have never run an iDeCo tax deduction calculator, the numbers can surprise you. ...

May 15, 2026 · 10 min · 1998 words · Productivity Works Editorial