Mortgage rate verification and change history
Current and historical dated records, effective dates, and lender announcements.
Rates are recorded with their verification date because they change monthly; as of August 1, 2026 the BoJ guideline was around 1.0%, standard Flat 35 was about 3.29% for 21–35 years, and several lenders had pre-announced further increases.
Key points
- Rates are recorded with a verification date and effective month.
- As of Aug 1, 2026: BoJ guideline ~1.0%, standard Flat 35 ~3.29% for 21–35 years.
- Mizuho pre-announced 1.275%+ variable from January 2027; PayPay raised long-term surcharges from September 2026.
- Always confirm the current rate at application and execution.
Why rates are dated
Mortgage rates are recorded with the date they were verified because they change monthly, and sometimes between application and execution. As of August 1, 2026 (Japan Standard Time), the Bank of Japan’s operating guideline was around 1.0% after its June 2026 decision, the average uncollateralized overnight call rate was roughly 0.977% at the end of July, standard Flat 35 was about 3.29% for 21–35 years at providers (the official JHF page still showed July’s 3.14% on August 1), and major lenders had announced or implemented higher prime rates.
Pre-announced changes
Some lenders publish future changes, which are the most useful figures for planning. Mizuho showed new variable borrowing from about 1.025% with a warning that 1.275% or more would apply from January 2027; Resona announced prime-rate changes for October 2026 affecting certain repayments from January 2027; and PayPay Bank’s long-term surcharge for terms over 35 years rises for executions from September 1, 2026. Model the announced future payment, not only today’s rate, and always confirm the current rate in a dated quotation at application and execution.
Key points to carry away: Rates are recorded with a verification date and effective month; As of Aug 1, 2026: BoJ guideline ~1.0%, standard Flat 35 ~3.29% for 21–35 years; Mizuho pre-announced 1.275%+ variable from January 2027; PayPay raised long-term surcharges from September 2026; Always confirm the current rate at application and execution. Use the linked guides and calculators for the full decision, and confirm anything material with the lender, a licensed broker, a judicial scrivener, or a tax accountant before you act.
Who this is for
- Borrowers tracking rate changes
- Anyone planning around a future reset
What this is not
- A live rate feed
- These rates were verified August 1, 2026 and have likely changed; confirm the current rate at application and execution.
Frequently asked questions
What happens if rates rise?
Interest cost rises; the timing of the payment change depends on the contract’s reset and payment rules.
How do I find the cheapest mortgage?
Compare the all-in cost — execution rate, fees, insurance, and early-repayment costs — over your holding period, not the headline rate.
How do I compare lenders fairly?
Use the same execution date, LTV, term, insurance, fees, and holding period for every quote.