Fixed vs Variable Mortgages in Japan: What Foreign Buyers Should Know

For most of the past decade, the fixed-versus-variable mortgage question in Japan barely mattered. Variable rates sat so low for so long, under a Bank of Japan committed to negative and near-zero rates, that the "safe" fixed option rarely looked worth its premium. That calculation has genuinely changed. With the BOJ now in an active hiking cycle and several major banks raising both variable and fixed mortgage rates within the same month, foreign buyers evaluating a purchase in Osaka today are facing a meaningfully different decision than buyers faced even a year ago.

Where Japanese Rates Actually Stand

The Bank of Japan raised its policy rate to 1.25 percent in September 2026, its highest level in roughly 31 years, following an earlier hike in June — part of a multi-year exit from the near-zero and negative rate policy that defined Japanese monetary policy for most of the 2010s and early 2020s. The next policy meeting, scheduled for late October 2026, is being watched closely for signs of a further increase.

That tightening cycle has already reached mortgage pricing directly. In October 2026, three of Japan's five major banks raised their most preferential variable mortgage rates: Mizuho Bank by 0.25 percentage points to 1.275 percent, Resona Bank by 0.30 points to 1.25 percent, and Sumitomo Mitsui Trust Bank by a sharper 0.62 points to 1.70 percent. The remaining two major banks, MUFG and Sumitomo Mitsui Banking Corporation, held their variable rates steady that month only because they had already raised them in September. On the fixed side, all five banks raised their ten-year fixed rates in October, by between 0.12 and 0.77 percentage points, with the most preferential ten-year fixed offers now ranging from roughly 3.6 to just under 5 percent depending on the lender.

Why This Changes the Calculation

A variable rate around 1.2 to 1.7 percent still looks dramatically cheaper than a fixed rate above 3.6 percent, and on a month-to-month basis, it is. The question isn't which rate is lower today — it's how much confidence you have that the gap will stay in variable's favor over the life of your loan. With the BOJ having now raised rates twice in 2026 and explicitly signaling that further hikes remain on the table, the assumption that variable rates will simply stay low indefinitely, which held reasonably well for most of the past fifteen years, no longer holds the same way. A variable-rate borrower who locked in at 1.0 percent eighteen months ago has already seen their effective rate climb meaningfully as banks pass through BOJ increases, and further increases are explicitly flagged as likely by lenders themselves.

This doesn't make variable the wrong choice — for many borrowers, particularly those planning to sell or refinance within a few years, or those with enough income buffer to absorb a reasonable rate increase, variable can still make sense. But it does mean the decision now requires actually modeling a rising-rate scenario, not just comparing today's headline numbers.

What's Different for Foreign Buyers Specifically

Foreign buyers generally face a narrower set of lenders willing to extend a mortgage at all, particularly without permanent residency, and the banks that do lend to non-permanent-resident foreign buyers often price both their fixed and variable offerings somewhat differently from the headline "most preferential" rates quoted for domestic, permanent-resident borrowers — those favorable rates typically require meeting specific income, employment, and sometimes Japanese-language criteria that not every foreign applicant can satisfy. A foreign buyer's realistic rate, on either a fixed or variable basis, needs to be benchmarked against what specific lenders actually offer to their profile, not against the preferential rates advertised to the general domestic market.

Down payment requirements also tend to run higher for foreign buyers without permanent residency, which changes the overall math of fixed versus variable: a larger required down payment means a smaller loan principal, which in turn reduces the absolute yen impact of a given rate-percentage swing, even as the proportional risk calculation stays the same.

Questions Worth Asking Before You Choose

• How long do you realistically expect to hold the property? A shorter expected holding period reduces your exposure to future rate increases under a variable loan, while a longer one gives fixed-rate stability more time to prove its value.
• How much of a rate increase could your budget genuinely absorb? Model your monthly payment not just at today's variable rate, but at two and three percentage points higher, and check honestly whether that remains comfortable.
• Does your specific lender offer a true long-term fixed product, or only a fixed period that reverts to variable? Some "fixed-rate" mortgages in Japan are only fixed for an initial window before converting, which matters enormously for how much genuine protection they provide.

Why This Isn't a Call We Can Make for You

We're a real estate agency, not a mortgage broker or financial advisor, and the fixed-versus-variable decision depends on your personal risk tolerance, your financial situation, and your actual plans for the property — all of which deserve a conversation with a mortgage specialist or financial advisor who can model your specific numbers, not a generic rule of thumb. What we can say factually is that the environment has shifted: this is no longer a question where "variable, obviously" is the uncontroversial default answer it was for most of the past decade, and treating it as a formality rather than a genuine decision is a different kind of risk than it used to be.

Where We Actually Fit Into This

Our role is the property side of your purchase — realistic pricing, honest assessment of a building's condition and long-term value, and connecting you with lenders and mortgage brokers who actually work with foreign buyers on a regular basis, so you're not starting your financing search from zero once you've found the right property. If you're evaluating a purchase in Osaka and want to talk through the property fundamentals alongside a realistic view of what financing looks like for your specific profile right now, we're happy to have that conversation — in English, French, or Japanese.