Flat 35 Mortgage Rate Hits Record High of 3.830% — 5ch Reacts: ‘Who’d Actually Pick This?’

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The story

On October 1, the Japan Housing Finance Agency announced the applicable interest rates for October on “Flat 35,” a fixed-rate home loan with a maximum term of 35 years. The lowest rate, applied when the loan amount is 90% or less of the home’s purchase price, rose to 3.830% per year — the highest level since the system was revised in October 2017. On 5ch, a thread saw opinions clash between those who argue you should just buy a house outright in cash and those who say it’s more rational to take out a loan while rates are still relatively low and put spare cash into investments instead, with the debate spreading into whether new-builds or resale homes are the better deal, and whether renting beats owning.

What people said

1AnonymousOct 1, 2026 20:02
10/1 (Thu) 11:55 JST
The Asahi Shimbun
On the 1st, the Japan Housing Finance Agency announced the October interest rates for "Flat 35," a home loan that fixes the rate for up to 35 years. The lowest rate, which applies when the loan amount is 90% or less of the home's purchase price, rose to 3.830% per year — the highest it has been since the system revision took effect on October 1, 2017.
3AnonymousOct 1, 2026 20:03
Don't buy a house with a loan.
My old man saved up and bought his place outright in cash.
Did the same thing when he rebuilt it, too.
15AnonymousOct 1, 2026 20:11
Re: #3
That's the thinking of someone with no financial literacy.

You keep your cash and deliberately borrow instead, so you can invest it at a return higher than the loan rate.
102AnonymousOct 1, 2026 20:41
Re: #3
Sure, that's great — if you completely ignore the benefit of actually getting a house right now lol
5AnonymousOct 1, 2026 20:04
Glad I bought my house 20 years ago ε-(´∀`*)ホッ (sound of a relieved sigh)
150AnonymousOct 1, 2026 21:01
Re: #5
Yeah, rates were super low back then, and now it's gone up so much you'd turn a solid profit if you sold.
Real estate, who knows.
6AnonymousOct 1, 2026 20:05
Just buy a used house.
9AnonymousOct 1, 2026 20:07
Re: #6
You think resale homes are actually cheap?
People keep living in the good locations, so they don't come cheap.
Usually it's tiny new-builds that end up being the cheap option.
121AnonymousOct 1, 2026 20:48
Re: #6
I bought mine for 7 million yen.
10-year loan.
13AnonymousOct 1, 2026 20:09
Banks aren't exactly thrilled since there's not much profit in it for them.
It's a slave contract — paying more than the variable rate for 35 straight years.
Who'd actually pick this?
78AnonymousOct 1, 2026 20:36
Re: #13
Eventually the variable rate will overtake it somewhere along the line — it just hasn't happened yet because Japan's being dumb about it right now.
24AnonymousOct 1, 2026 20:16
Glad I'm renting.
Putting my spare cash into investments instead.
25AnonymousOct 1, 2026 20:17
Re: #24
Rent goes up too, obviously.
67AnonymousOct 1, 2026 20:33
Re: #24
Not like it matters if a single person owns a home or not.
They'll end up in a nursing home anyway to avoid dying alone.
32AnonymousOct 1, 2026 20:20
If rent goes up, can't you just… not agree to it?
36AnonymousOct 1, 2026 20:23
Re: #32
That's the basic idea, but worst case it ends up in court.
Depends on how serious the landlord is about it.
41AnonymousOct 1, 2026 20:25
Re: #32
If there's a legitimate reason, rent increases are legally allowed.
33AnonymousOct 1, 2026 20:20
Why is it that once people living in central Tokyo get married and have kids, they flee to the suburbs for a house? Why not just keep living there?
50AnonymousOct 1, 2026 20:29
Re: #33
Because it's too cramped.
42AnonymousOct 1, 2026 20:25
A place in the city costs like 100 million yen, right? That's just impossible now.
167AnonymousOct 1, 2026 21:07
Re: #42
3.8% on 100 million yen is like twice my annual salary.
43AnonymousOct 1, 2026 20:25
I built my house six months ago at a variable rate of 1.8%.
Decided to build it when my wife got pregnant with our 7th kid.
It's a 6-bedroom house (6LDK — 6 rooms plus living/dining/kitchen).
47AnonymousOct 1, 2026 20:27
Re: #43
You got this, dad.
44AnonymousOct 1, 2026 20:26
The weak yen's upside is showing up here too lol lol
Recently-built properties are about to get cheap, I'm so excited lol lol
65AnonymousOct 1, 2026 20:32
Re: #44
That just means more people won't be able to afford those cheaper properties.
Re: #62
Sounds like plenty of people have already let theirs go.
45AnonymousOct 1, 2026 20:26
Now's exactly the time to buy a tower condo with a joint loan at a variable rate.
60AnonymousOct 1, 2026 20:31
Re: #45
Might as well get an Alphard (Toyota's premium minivan) while you're at it.
62AnonymousOct 1, 2026 20:32
Re: #15
Would people who say that actually dump all their securities in one go just to buy a house?
If not, you're no different.
96AnonymousOct 1, 2026 20:40
I wonder if the people stretched to the limit with residual-value car loans plus a double mortgage are gonna be okay.
105AnonymousOct 1, 2026 20:43
Re: #96
They're probably not okay, that's why they're not posting.
119AnonymousOct 1, 2026 20:47
Re: #96
Doesn't matter at all to people who already locked in a fixed rate.
No idea what happens to the variable-rate folks, but variable rates are low to begin with anyway.
116AnonymousOct 1, 2026 20:45
What actually happens if you stop being able to pay your mortgage?
120AnonymousOct 1, 2026 20:48
Re: #116
You get a letter saying you've lost your right to installment payments (i.e., the full remaining balance becomes due immediately).
125AnonymousOct 1, 2026 20:49
Re: #116
Your house gets seized, and you're still stuck with part of the loan.
160AnonymousOct 1, 2026 21:05
'I'm deliberately not paying it off early, keeping the long loan as a kind of insurance, and putting my spare cash into investments instead! Smart, right?' — anyone who used to brag like that, raise your hand.
171AnonymousOct 1, 2026 21:09
Re: #160
Amateurs investing on their own just end up failing anyway.
179AnonymousOct 1, 2026 21:11
Re: #160
My index investments are over 100 million yen. The mortgage tax deduction (minus 1%) still has about 6 more years to run, so I'm doing just fine.

Background and key points of this story

Flat 35 is a fully fixed-rate home loan offered jointly by the Japan Housing Finance Agency and private financial institutions, with its rate revised monthly in line with movements in government bond yields, the benchmark for long-term interest rates. This month’s 3.830% is the highest level since the October 2017 system revision, reflecting the ongoing rise in long-term rates. The thread was dominated by a clash between the “pay cash outright” camp and the “borrow while rates are still low and invest the spare cash” camp, but what went largely unmentioned is that, since Flat 35 is a fixed-rate loan to begin with, future rises in variable rates won’t directly affect its repayment amount. Also, the strategy of skipping early repayment and keeping a long loan can swing either way in terms of profit and loss depending on how long the mortgage tax deduction applies and how investment returns actually turn out — it’s not a simple case of one approach being clearly better.

※This article is an excerpt and summary based on the 5ch (News Speed+) thread “[Home Loans] Flat 35 Mortgage Rate Hits Record High of 3.830%.”

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