BOJ Raises Rates to 1%: Depositors and Banks Benefit While Mortgage Holders Face Pressure
Taylor Wilson
The Bank of Japan raised its benchmark rate to 1% in June — the highest since 1995 — redrawing the map of winners and losers built up over decades of ultra-low rates: savers and banks gain, while floating-rate mortgage holders face rising monthly payments.
Who benefits first from a 1% rate?
Japanese households hold over ¥1,000 trillion (roughly $6.2 trillion) in deposits. Higher rates translate directly into more interest income.
Mizuho economist Naoki Hattori estimates that at 1%, ordinary deposits will earn about ¥700 billion more per year, and term deposits about ¥800 billion more.
This means → the biggest winners are elderly households. Those headed by someone aged 70+ stand to gain roughly ¥42,000 a year — they hold more savings and carry less debt.
Japan's three mega-banks will raise ordinary deposit rates from 0.3% to 0.4% starting August 3.
How much have banks earned — and what risk are they sitting on?
Since the BOJ began hiking in March 2024, loan-interest income has grown faster than deposit-interest costs.
Core operating profit at listed regional banks rose roughly 64% in fiscal 2025 compared with two years earlier.
But new risks are building: some banks may struggle to pass higher rates on to borrowers, and pushing too hard could trigger credit problems.
In plain terms = rising rates also erode the market value of bonds banks already hold, creating unrealised losses — in an extreme scenario, that could raise questions about bank balance-sheet health.
How much more will floating-rate borrowers pay?
Over 80% of Japanese mortgage holders chose floating-rate loans tied to the BOJ's policy rate.
The mega-banks' average floating mortgage rate hit 1.082% in April — breaching 1% for the first time in 15 years. Before the BOJ ended negative rates in March 2024, it was roughly 0.4%.
This means → on a ¥50 million, 35-year mortgage, monthly payments could rise by more than ¥20,000, reaching about ¥147,000.
Banks are expected to add roughly 0.25 percentage points around October to reflect the latest hike.
Can the "five-year rule" absorb the shock?
Japan's "five-year rule" gives some borrowers a buffer — monthly payment amounts are typically recalculated only once every five years, even if the rate has already risen.
In plain terms = your monthly bill may look unchanged in the short run, but interest is accumulating behind the scenes and will show up all at once when the five-year reset arrives.
Hattori estimates that higher mortgage and other loan repayments will cost Japanese households an additional ¥500 billion per year in total.
Are credit cards and consumer loans affected?
Credit card company Credit Saison has already raised rates on some revolving-credit products.
However, Japanese consumers use revolving credit far less than their U.S. counterparts — most pay off balances in full each month — so the overall impact remains limited for now.
This reflects a structural feature: Japan's consumer-credit mix naturally dampens the direct hit from rate hikes on everyday borrowers — the real pressure point is mortgages.
What to watch next?
The repricing rhythm of floating-rate mortgages is the first checkpoint — when banks raise mortgage rates around October, the impact will show up visibly on household bills.
Whether banks can pass costs through smoothly is the second — a failure to pass them on squeezes profits; passing them on too aggressively risks pushing up defaults.
This means → these two threads will determine whether Japan's rate reset lands gently or cracks open somewhere along the chain.
Content is for reference only, not financial advice.