$887 Billion In Japan Is Sitting Outside Deposit Insurance — And No One Is Moving It

$887 Billion In Japan Is Sitting Outside Deposit Insurance

 

OpenLife News reports that Japanese household savings that are not protected by deposit insurance have surged 40% over the past five years to more than 140 trillion yen ($887 billion) as bank accounts with large balances increase.

Japan’s total personal deposits stood at 593 trillion yen at the end of August, and continue to rise, according to the Bank of Japan, with deposits exceeding the insurance limit now accounting for 24% of all personal deposits.

But it is not small savers driving the growth. It is the rich — and the inherited rich.

The Rise Of The Big Account

The number of accounts holding 10 million yen or more — the exact limit of Japan’s deposit insurance — reached 12.88 million in March, up 23% from five years earlier.

Accounts with balances exceeding 100 million yen totaled 152,400, up 50%.

Meanwhile, accounts with less than 10 million yen — while still accounting for 98% of all accounts at 675.84 million — declined by 10%.

In other words: Japan has fewer small accounts, but far more very large ones.Takuya Hoshino, chief economist at the Daiichi Life Research Institute, estimates that personal deposits exceeding the insurance limit totaled more than 142 trillion yen as of March, an increase of 36% from five years earlier and more than double the 66 trillion yen recorded a decade ago.

Such deposits now account for 24% of all personal deposits, compared with 15% 10 years ago.

One in every four yen in a Japanese personal bank account is now sitting above the safety net.

Why? Inheritance

Hideo Kumano, chief economist at ABC Economic Research Institute, points to the rise in inheritances as a key factor.

“Deposits are being transferred through inheritances from elderly people with substantial financial assets, leading to larger balances per account,” Kumano said.

The numbers back him up. The number of people subject to inheritance tax in 2024 rose 60% from 2015 to around 160,000, according to the National Tax Agency.

READ ALSO: Anxiety Japan’s 7  Major Automakers Set To Enter Prolonged Phase Of Profit Decline

Japan Provides Flexible Bandwidth For Government Bond Yields To Fluctuate

Japan is ageing faster than any major economy. Its post-war generation — who built savings during the high-growth era, bought land when it was cheap, and held cash through decades of deflation — is now passing that wealth on.

Their children, often in their 50s and 60s themselves, are not spending it. They are consolidating it into fewer, larger bank accounts. And they are leaving it there.

A 40-Year-Old Safety Net

Under Japan’s insurance system, deposits are protected up to 10 million yen in principal plus accrued interest.

The system has been invoked only once, following the collapse of the Incubator Bank of Japan in 2010.

That ceiling — 10 million yen, about $63,000 — was raised to its current level in July 1986 and has remained unchanged for four decades.

In 1986, 10 million yen was a fortune. Today, it is barely a down payment on a Tokyo apartment, and far below the average savings of a household over 65, which held an average of ¥24.9 million in savings in 2025.

Japan’s neighbours have moved. Singapore raised its deposit insurance limit in April 2024, while South Korea doubled its ceiling in September 2025. But Japan is “not currently considering a review” of the ceiling, a senior official at Japan’s Financial Services Agency said.

For now, settlement accounts used by corporations are fully protected, but ordinary household savings above 10 million yen are not.

The Paradox: Savers Who Don’t Feel Safe, But Won’t Move

The surge in unprotected deposits comes even as Japan is finally leaving its era of zero interest rates behind.

When the Bank of Japan last week declared victory in its near 14-year battle to lift inflation to its 2 per cent target, it closed a long chapter of near-zero interest rates.

The BOJ raised its policy rate to 1.25% in September 2026, the highest since April 1995.

Yet commercial banks have kept deposit rates low — offering around 0.5% on one-year deposits, not enough to beat inflation.

In contrast, 3- and 5-year retail notes and 10-year floaters all offer coupons above 2%.

Retail Japanese government bond sales in the April-October period have nearly doubled from a year earlier to 6 trillion yen. Over the last three consecutive months, monthly sales have exceeded 1 trillion yen.

But for most older savers, the bank remains king. Japanese households hold roughly 2.50 quadrillion yen in financial assets, with cash and deposits accounting for about 1.13 quadrillion yen.

Cash and deposits make up 47.2% of Japanese household financial assets, compared with just 10.7% in the US and 31.1% in the euro area.

What It Means

 For depositors: If a bank fails, anything above ¥10 million per depositor per bank could be lost — at least in theory. Japan has almost never tested this, and regulators would likely engineer a rescue to avoid panic. But legally, the risk is real.

 For banks: Lending is rising 5-6% a year while deposits grow only around 2%, forcing lenders to compete more aggressively for household savings. Large, unprotected deposits are also more flight-prone in a crisis.

 For policymakers: The government wants to shift household money from savings to investments — from cash to stocks, bonds and funds — by 2040.

The new NISA tax-free investment account has 28.21 million accounts. But in 36.6% of those accounts, nothing was bought during 2025.

The mountain is growing, but it is growing in the wrong place: concentrated in fewer, bigger, unprotected bank accounts, held by older heirs who trust the bank more than the market.

Japan does not have a bank run problem. It has a bank concentration problem — $887 billion sitting just outside the safety net, waiting for a reason to move.

Clarifications on ‘unprotected deposit insurance’

Q: How much Japanese savings are unprotected by deposit insurance?
A: More than 140 trillion yen ($887 billion) in Japanese household savings are not protected by deposit insurance, up 40% over the past five years, according to Bank of Japan data analysed by Daiichi Life Research Institute.

Q: What is Japan’s deposit insurance limit?
A: Japan’s Deposit Insurance Corporation of Japan (DICJ) protects deposits up to 10 million yen in principal plus accrued interest per depositor per bank. The limit has been unchanged since July 1986.

Q: Why are Japan’s unprotected deposits rising?
A: Mainly inheritances. Economists point to wealth being transferred from elderly savers with substantial assets to their heirs, leading to larger balances per account. Inheritance tax payers rose 60% from 2015 to around 160,000 in 2024.

Q: What happens if a Japanese bank fails and you have more than 10 million yen?
A: Legally, only up to 10 million yen plus interest is guaranteed. Amounts above that could be lost, though Japan has only invoked the system once, after the Incubator Bank of Japan collapse in 2010, and regulators would likely seek a rescue to avoid panic.

Q: What percentage of Japanese personal deposits are unprotected?
A: Unprotected deposits now account for 24% of all personal deposits in Japan, up from 15% 10 years ago.

Q: Is Japan raising its deposit insurance limit?
A: No. Despite Singapore raising its limit in April 2024 and South Korea doubling its ceiling in September 2025, Japan’s Financial Services Agency says it is “not currently considering a review” of the 10 million yen ceiling.