Should You Buy or Rent in Japan? Why We Built a Calculator Instead of Arguing

The buy-vs-rent argument shows up in every household eventually. In ours, it kept going in circles.

One of us leaned toward buying — the stability, the idea of a place that's actually ours, no landlord, no renewal fees. The other leaned toward renting — the freedom to move, the money we'd keep free to invest, the quiet question we never quite resolved: are we even staying in Japan long-term?

We weren't really disagreeing about money. We were disagreeing about the future. And no amount of "renting is throwing money away" or "buying always wins eventually" settled it, because in Japan, both of those slogans are wrong more often than they're right.

The slogans don't survive contact with Japan

A few things make the math here different from what most of us grew up hearing.

Buildings depreciate. In Japan, the structure you buy is treated as a wasting asset — a wooden house has an official useful life of about 22 years. The land can hold its value, but "the house is an investment" is far less automatic than it is elsewhere.

Most mortgages are variable. And in June 2026 the Bank of Japan raised rates to 1% — the highest since 1995. Variable loans are still cheap compared to fixed, but "rates can only stay near zero" stopped being true.

And if you're not a permanent resident, getting a mortgage at all can mean a much bigger down payment. The decision isn't just "do we want to buy" — it's "can we, and on what terms."

So the real answer was never a slogan. It was: it depends — on us.

The two questions that actually mattered

When we stopped arguing about the principle and started asking better questions, two stood out.

The first was financial: which path actually gets us to our goals faster? Renting keeps more cash free to invest, which matters a lot when the building you'd buy is depreciating. Buying removes rent and builds equity, which matters a lot over a long horizon. Neither wins automatically — it swings on price, rent, how long we stay, and where rates go.

The second was honest and human: which path do we actually want to live in? Renting buys flexibility. Buying buys stability. We had to admit what we valued more right now — not in some imagined version of our lives.

The uncomfortable truth was that the answer changed depending on one input we couldn't pin down: how long we'd stay in Japan. Under five years, renting clearly won. Settled for the long term, buying got interesting. We were arguing about housing when we were really uncertain about geography.

Why we built the calculator

At some point we realized we were trading opinions when we needed numbers.

So we built a Buy vs Rent calculator — one that fits how housing actually works in Japan, not a US template. You put in your region, the price you're looking at, your current rent, an appreciation assumption, and how long you expect to stay. It shows the crossover point: where one path overtakes the other for your situation.

It didn't hand us a slogan. It gave us a line on a chart that moved when our assumptions moved — and that turned a circular argument into an actual conversation.

If you're stuck in the same loop, try it: the free Buy vs Rent calculator. And if you want the fuller breakdown — the money lens, the comfort lens, and the questions that decide it — we wrote a complete guide: Buy vs Rent in Japan: Which Path Fits Your Money and Your Life.

The goal was never to prove one of us right. It was to stop guessing.

PlanTogetherFI is for educational planning only. It is not financial, tax, legal, or investment advice.