At the beginning of June 2026, Sumishin SBI Net Bank launched a new mortgage product for condos: a hybrid loan that combines normal monthly repayment with a lump-sum repayment at a set future date.
With a normal mortgage, you gradually repay the borrowed principal month by month until the loan is fully paid off. This new product works a bit differently. Part of the loan is repaid normally each month, while another portion, equivalent to 50% of the property’s collateral valuation, is repaid later in one lump sum.
In a nutshell, monthly payments can be lower, but a large repayment is pushed into the future. Importantly, the borrower still pays interest on the lump-sum portion during the loan period. The principal itself just comes due later.
It’s not exactly the most intuitive loan, so let’s break down why Sumishin SBI came up with it.
As any of our readers will already know, condo prices in central urban areas have continued to rise. At the same time, buyers are still looking for properties with strong asset value, especially in convenient major-city locations. The problem, of course, is that higher prices also mean higher monthly mortgage payments, which can put serious pressure on a household budget.
Some banks have introduced 50-year loans as one way to lower monthly payments, but those do not work for everyone because of age-at-completion limits. Sumishin SBI’s new product is essentially another way to approach the same problem: how do you help strong buyers purchase expensive urban condos while keeping the monthly payment somewhat more manageable?
The bank also mentions buyers who may want more flexibility, including people thinking about moving in 10 to 15 years, families preparing for child-rearing or work changes, and buyers who want to keep their future options open.
That said, this is very clearly not a loan for everyone.
The basic borrower requirements are:
- Age 18 to 65 at borrowing
- Under 80 at full repayment
- Previous-year income of ¥10 million or more
- For pair loans, at least one borrower must have previous-year income of ¥10 million or more
- Must qualify for the bank’s designated group credit life insurance
- Must live in Japan
The product is currently limited to new-build and used condos purchased as a home for the borrower or the borrower’s family, not investment properties.
Eligible areas are:
- Tokyo 23 wards
- Yokohama City
- Kawasaki City
- Osaka City
The property itself must have a collateral valuation of ¥100 million or more, and it must be 65 years old or newer at full repayment.
The main loan terms are:
- Loan amount: ¥5 million to ¥300 million
- Loan term: up to 35 years
- Interest type: variable or fixed-period options
- Interest add-on: +0.350% as of June 2026
- Administrative fee: 2.20% of the loan amount including tax
For our clients, this is something worth knowing about if you are a high-income borrower looking at an expensive condo in one of the eligible areas. However, as you can probably tell from the requirements, this is not meant to be a broad, standard mortgage product. The scope is narrow: higher-income borrowers, expensive condos, and major urban areas.
The risk profile is also pretty clear. Yes, the product can lower monthly payments, but it does that by making both the future repayment plan and the property’s future value much more important.
In a way, this product seems to imply that the bank has at least some confidence that certain high-value condos in places like Tokyo’s 23 wards, Yokohama, Kawasaki, and Osaka can hold or increase their value over time. Otherwise, it would be a strange product to offer. But that also puts a lot of pressure on the bank to assess both current and future property values accurately.
The bank itself notes that the product does not guarantee future property prices, and that the full borrowed amount must be repaid by the repayment deadline. That is the key point. This loan does not make the condo cheaper. It changes the timing of repayment.
There is also another way to look at this. In Japan, how much someone can borrow is still heavily tied to their annual income. If property prices keep rising faster than salaries, then even strong buyers may eventually struggle to borrow enough under a normal mortgage structure. Products like this may be one way banks try to bridge that gap, but they also point to a bigger issue: if fewer and fewer people can afford expensive urban condos, sellers may eventually have a harder time finding buyers who can actually pay the prices being asked.
For some buyers, this product could still be useful. If you have a realistic plan to sell, refinance, or otherwise handle the lump-sum repayment later, the lower monthly burden may make sense. But the dangerous way to read this would be, “Great, I can afford more condo now.” The safer way to read it is, “What exactly is my plan when the large repayment comes due?”
This is also why the property itself matters so much. If the whole structure depends partly on future resale or refinancing, then location, building condition, management, repair reserve fund, and long-term demand become even more important than usual.
In a sentence: this new loan does not make expensive condos more affordable, but it may make the monthly cost easier to carry for certain strong buyers while placing even more importance on future property values, income limits, and the buyer’s long-term repayment plan.
If you’re interested in learning more about your financing options in Japan, please feel free to reach out to us here. The Dovetail team would love to hear from you!
Source: https://www.netbk.co.jp/contents/company/press/2026/0601_005778.html