Final Friday (December 5, 2025), I filmed an prolonged dialogue with my Kyoto College colleague, Professor Fujii a couple of vary of points in regards to the Japanese and World financial system. As soon as it’s edited, the video shall be out there on YouTube. Fujii-sensei is advising the brand new Japanese Prime Minister and is the writer of the ‘Accountable proactive fiscal coverage’ slogan that’s summarising the shift inside the Japanese authorities from the Ishiba Cupboard and their austerity mindset to the brand new Takaichi Cupboard and its need to introduce renewed fiscal growth. Among the many subjects mentioned: (a) my conjecture that Japan is caught in a vicious cycle of secular stagnation and requires a big fiscal shock to change the deflationary mindset that has crippled the financial system over a number of a long time; (b) the necessity for tariffs to guard Japanese business to advance meals safety (within the face of main rice shortages over the last 12 months or two); (c) whether or not Japan ought to take part in Plaza Accord 2.0 (aka Mar-a-Lago Accord) that Trump is demanding China settle for; and (d) coverage constructions which are essential to reallocate labour from areas of extra (gig financial system) to sectors the place shortages and bottlenecks are current (for instance, Development), The latter shall be important if the proposed fiscal growth is to stimulate manufacturing fairly than costs. For the needs of this weblog put up although, we additionally mentioned the validity of fiscal growth inside the context of the yen. Mainstream economists preserve arguing that the growth isn’t viable given the depreciation of the yen, which they declare has been inflationary. It’s a customary argument and I discussed it on this current weblog put up – Panel of Japanese economists mired in misguided mainstream constructions and logic (November 27, 2025). I take into account that subject extra at present.
What’s inflation?
Many individuals confuse ‘inflation’ with a ‘value rise’, though there’s , in fact, some correspondence.
Inflation is the continual improve within the value degree of a great or all items (a composite measure that’s).
If the value degree is rising at an rising fee then we are saying there’s accelerating inflation.
If the value degree is repeatedly rising by the following will increase are smaller than the final then we are saying there’s decelerating inflation.
If the value degree is repeatedly rising on the similar fixed fee, then we are saying there’s steady inflation.
Deflation happens when the value degree is repeatedly falling.
A step improve (or realignment) within the value degree doesn’t represent inflation.
This distinction is especially vital after we take into account alternate fee actions.
Actions within the yen
The Japanese forex (yen) has depreciated in worth considerably for the reason that pandemic started.
The next graph exhibits the month-to-month motion within the yen in opposition to the USD from 1980 to October 2025.
A downwards motion signifies an appreciation of the yen in opposition to the USD and vice versa.
The foremost appreciation previous to the Plaza Accord within the early Nineteen Eighties is putting because the USD struggled to carry worth.
I wrote about that on this current weblog put up – Discuss of a Plaza Accord 2.0 ought to heed the teachings of Plaza Accord 1.0 (December 1, 2025).
Nevertheless, it’s the current interval that’s of curiosity on this dialogue.
The latest yen deprecation started in February 2021 (in January 2021 the yen was at 103.69).
Inflation didn’t begin to speed up till early 2022.
Putin invaded Ukraine for the second time in February 2022, after beforehand starting hostilities in 2014 (Crimea annexation and so forth).
OPEC oil value hikes started in earnest in November 2020, rising from USD36.152 per barrel to USD114.83 per barrel on the peak in Could 2022.
It was the vitality value hike that precipitated the rise in inflation, adopted by provide constraints that adopted the relief of Covid restrictions and the Putin folly.
The next graph exhibits the trajectory of Japanese imported gasoline costs in each yen and USD phrases.
The actions are largely motivated by world elements however we observe within the interval following the OPEC hikes from 2020 to 2023, the influence of the yen depreciation (blue yen line deviates from the USD purple line).
So the yen equal of the USD gasoline value has diverged although each are trending downwards.
When the Financial institution of Japan determined to carry rates of interest fixed within the face of the inflationary pressures, whereas the opposite central banks had been vigorously mountaineering charges, it knew that there could be an influence on the alternate fee.
When the Federal Reserve Financial institution began mountaineering rates of interest in March 2022, the yen stood at 118.5 in opposition to the US.
Since March 2022, the yen has depreciated round 17.5 per cent in opposition to the USD, a major parity shift.
Within the final 12 months, the mainstream ‘consultants’ declare that the depreciation proves that Japan’s persevering with fiscal deficits and the excessive public debt ratio are being rejected by the monetary markets.
Nevertheless, different elements have been at work.
After the – 2011 Tōhoku earthquake and tsunami – often known as 東日本大震災 (Nice East Japan Earthquake) – the forex appreciated as a result of it was anticipated uncovered insurance coverage firms must repatriate international forex belongings.
That didn’t change into the case, however the forex appreciated nonetheless, although financial and financial coverage is essentially unchanged from that interval to now.
If you happen to look at the graph, you will notice a number of intervals of appreciation, particularly for the reason that Nineties, although macroeconomic coverage has been constantly expansive over this whole interval (bar transient intervals).
None of those occasions had a lot to do with home coverage.
For instance, we would ask what was occurring between November 2011 and August 2015, when the yen depreciated considerably in opposition to the US greenback, giving again the shifts that occurred throughout the GFC?
Did the yen immediately turn into an unsafe forex?
And if it did, why did the forex then begin appreciating once more as much as the interval when the central financial institution rate of interest differentials started to widen due to the totally different responses to the inflationary pressures?
Web exports went into deficit in mid-2011, as exports development faltered, and didn’t return to surplus once more till the September-quarter 2016.
It was commerce actions that drove the alternate fee modifications.
All by these episodes, there have been steady Japanese fiscal deficits, a rising public debt ratio, a zero-interest fee financial coverage, and enormous quantitative easing purchases of presidency debt.
The depreciation that was related to the ‘Three Arrows of Abenomics’ which aimed to resume financial development and get away of the deflationary lock is an attention-grabbing case examine.
It’s effectively understood that the Abe authorities from 2012 implicitly needed the yen to depreciate considerably as a part of his plan to reflate the Japanese financial system.
Earlier than his election, Japanese manufacturing was struggling in opposition to the excessive yen worth, which strengthened the deflationary surroundings and made it troublesome to advertise wages development.
The foremost shifts within the yen worth have largely mirrored world shifts in exercise and insurance policies and speculative efforts to revenue from them.
The bottom case is that the yen is a safe-haven forex.
There’s an on-going debate as to the extent that the so-called ‘carry commerce’ have pushed the actions within the yen not too long ago.
The mainstream clarification is that the rate of interest differentials have motivated traders to shift yen, borrowed at low charges, into different currencies in quest of higher yields.
Whereas there isn’t a doubt this explains a number of the motion, a extra believable clarification is that the shift of the commerce stability to deficit in recent times promoted weak point within the forex (extra provide of yen to the market).
The yen depreciation that started in early 2012 coincided with the tsunami that shut down the nuclear energy crops and elevated Japan’s vitality imports for energy era, driving the commerce stability to deficit.
The yen recovered with the return of commerce surpluses, adopted by depreciation as COVID lower into exports and commerce went into deficit.
As soon as the commerce stability returns to surplus, the yen will strengthen, pushed by commerce flows.
The present state of affairs
The mainstream narrative that’s repeated typically is that the depreciation is inflationary.
The declare is that depreciation will increase the yen equal of international costs, which importers then go on to last shoppers within the type of greater home costs.
How briskly that takes place following an alternate fee change is set by so-called ‘alternate fee go by’.
If the go by is 100 per cent then all of the forex worth results turn into mirrored within the last value.
Whether it is speedy, then the influence is rapid.
Analysis is blended with respect to Japan however most leans in the direction of comparatively excessive charges of go by over a comparatively brief interval.
In the course of the current inflationary episode, the Japanese authorities subsidised importers which decreased the go by as margins had been absorbed.
The next graph exhibits the evolution of the yen parity and import costs (base 12 months 2020 = 100) in Japan from 1980 to October 2025.
There’s some correspondence between the trajectories.
The query at current is whether or not the alternate fee is driving the inflationary course of.
The reply is No!
Mirror again on the opening factors on this weblog put up earlier than you proceed.
If we look at the newest interval (see subsequent graph) we are able to see that the yen has stabilised at its new decrease degree in opposition to the USD – averaging 148.98 since June 2023.
You may as well see that import costs have stabilised on the new greater degree after the rises from 2020 to 2023.
The purpose is that the inflationary impacts, if any, of the upper import costs and decrease yen have now been largely absorbed into the value degree.
There aren’t any additional inflationary impacts coming from the forex.
Certain sufficient, Japanese shoppers at the moment are paying greater costs for imported gadgets.
However that upwards adjustment has now largely dissipated.
And if the Takaichi growth contains subsidies to households (for instance, the federal government has already introduced a 20,000 yen money fee to all kids below the age of 18) and companies to allay a number of the greater value burdens, then the CPI will fall fairly considerably.
Conclusion
One of many issues I seen once I first went to our native grocery store in Kyoto in September was the dramatic rise in value for desk rice.
Though rice consumption by Japanese households has fallen dramatically during the last 50 or so years, it stays a serious a part of the food regimen.
Rice coverage in Japan is one other story altogether and I’ll take care of it one other time.
However for many who assume that the decrease yen continues to be inflationary – the message is to assume once more.
The worth degree is heading down not up given present traits and the inflationary impacts of the depreciation are all however gone.
That’s sufficient for at present!
(c) Copyright 2025 William Mitchell. All Rights Reserved.
