SKILL 4 ・ GROW ・ 増やす力
Make money work when you stop working.
The strongest tool here is not talent or information. It is time. And as a foreigner you face two things Japanese investors do not: a tax-free system that only exists while you live here, and a pension refund that only happens when you leave.
Why Grow comes fourth
Plenty of people want to start with investing. It sits second from last for a simple reason: if your foundation is weak, you lose it before it grows.
And growing requires something to grow. That starting amount comes from spending less (Save) and earning more (Earn). Hence the order.
Once you have it, time does the work. The one advantage in investing that nobody can copy is having started earlier — and it is the only one you can never get back later.
Two things are different for you
First: Japan’s tax-free investment system (NISA) exists only while you live in Japan. Leave and become a non-resident, and the account is normally closed. There is a rescue rule, but it was written for Japanese employees posted abroad — it does not cover finishing your studies or going home by choice.
Second: some of the pension you paid comes back when you leave. It is called the lump-sum withdrawal payment. There is a deadline, and nothing happens automatically.
So you cannot answer “should I invest?” without answering “when do I leave?” The plan for someone here three more years and someone aiming for permanent residence is not the same plan.
This skill still works after you leave Japan
This is the clearest example in the whole framework.
NISA is a Japanese word for a Japanese system. When you go home, it disappears from your life. So does the pension refund. Memorising the systems is only useful while you are here.
What sits underneath them is the same in every country, in every decade.
- Starting early beats being clever — time is the one input you cannot buy later
- Choose the low-fee option — anything charged every year compounds against you
- Do not sell on the way down — selling is what turns a fall into a loss
- Do not put it all in one thing — spread it, and one bad outcome is not the end
- Money you will spend soon should not be invested at all — next year’s money belongs in cash
All five exist in Japan and in your home country. Only the names and the tax rates differ. So what is worth learning here is not the system — it is these five.
And these are what you hand to your children and grandchildren. “Start early” and “don’t sell on the way down” will still be true in a different country twenty years from now. That outlasts any amount of money you could leave them.
Grow — the guides
You can open one with a residence card. Read what happens when you leave first.
Lump-sum withdrawal payment: how much you get back
Part of the pension you paid returns when you leave — but only if you claim it in time.
Building the starting amount is covered in Skill 2: Save. Cutting your tax bill directly is in claiming family back home as dependents.
Then the last step
Protect, save, earn, grow. All four exist so that you can spend well. Growing a number without deciding what it is for is just a bigger number.
