Japan's first-5-years rule: Indian income is Japan-tax-free until you cross the line.

If you moved to Japan from India, your first five years come with a big tax break, and most people never use it.

For those years, Japan does not tax your Indian income, as long as you keep it in India. Your NRO interest, Indian dividends, rent and mutual fund gains all stay outside Japan's reach.

The catch is time. Once you've lived in Japan for more than five years, counting the last ten, Japan starts taxing your worldwide income, Indian income included. Japan calls the early phase non-permanent resident status.

So the five-year window is the thing to plan around. Here's how it works.

During the window, Japan taxes:

Japan does not tax your Indian income, as long as it stays in India.

So Indian salary left in an Indian bank, rent paid into your NRO account, Indian dividends and capital gains, and NRO or NRE interest are all Japan-tax-free, as long as you don't move them to Japan.

The simple rule: keep your Indian money in India, and bring over only what you need to live on.

Bringing it in is broader than a bank transfer. It also catches subtler things, like using an Indian credit card in Japan that's paid from Indian income, or buying a Tokyo apartment with money sent from your Indian savings.

If foreign income lands in Japan in any form during the year, that part becomes taxable. So a flat in Tokyo bought with an Indian remittance means a Japanese tax bill on the amount you brought in that year. Keep clear records of what you transfer, because the tax office traces it.

None of this changes what happens in India. India still taxes your Indian income at source, and the India-Japan treaty caps the rate at 10% on both interest and dividends.

Take a ₹35 lakh NRO fixed deposit at 7%, so ₹2.45 lakh of interest a year. The default is 30% plus cess, about ₹76,000. With your Form 10F (Form 41 from April 2026) and a Japanese tax residency certificate, it drops to 10%, or ₹24,500. That's over ₹50,000 back each year.

And during your five-year window, that Indian income costs you nothing on the Japan side, because you're keeping it in India.

Once you cross five years, Japan taxes your worldwide income. Your Indian shares, funds, NRO interest and rent all enter the Japanese tax base.

Japan's top rate is high, up to about 55% for big earners (45% national plus roughly 10% local). The treaty and Japan's foreign tax credit stop you being taxed twice, so you get credit for the 10% India already took. But Japan's rate is usually higher, so your total tax goes up.

That's why the five years matter. If you have serious Indian income, plan your Japan timeline around this line rather than crossing it by accident.

We handle the India side: your Form 41 and TRC, cutting your NRO interest to the 10% treaty rate, your Schedule FA disclosure, and recovering excess tax from past years. For the Japanese return you'll want a local accountant (a zeirishi), and we coordinate with them.

If you're coming up on five years in Japan and haven't looked at the cross-border shift, that's the time to talk. The five-in-ten count is precise, and getting your entry and exit dates right can stretch the window.