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
NISA vs FX in Japan: Which Is Better for Growing Your Money Tax-Efficiently?

NISA vs FX in Japan: Which Is Better for Growing Your Money Tax-Efficiently?

This article contains affiliate links. Japan offers two of the most talked-about investment paths for residents looking to grow their money: NISA (the government-backed tax-free account) and FX (foreign exchange margin trading). On the surface, both involve putting money to work in financial markets. But dig a little deeper and you will find they are almost opposites — different tax rules, different risk profiles, and very different audiences. If you are new to investing in Japan — whether you are a Japanese national or an expat — understanding how these two options compare is essential before committing a single yen. This guide breaks down everything you need to know: how each product works, how they are taxed, what risks they carry, and how to decide which one (or both) belongs in your financial plan. ...

May 8, 2026 · 12 min · 2404 words · Productivity Works Editorial