What The Squeeze Cost Japan, And What Its Debt Costs Next

What Japan’s Debt Costs As It Refinances

This takes the debt Japan already owes, adds nothing it borrows from here, and runs it forward at the 3.8% its own budget request assumes. As each bond matures it is replaced at the new rate. Nothing else changes.

Gross government debt is larger than the stock used here, around $9tn or 208% of GDP.iThe table uses general bonds, ¥1,145.4tn, because that is the universe the Ministry of Finance publishes both a weighted average coupon and a redemption schedule for. Pairing a broader debt figure with those two narrower series would mix measures. It makes no difference to the multiple, which is what the video quotes, and it is the more conservative choice for the dollar figures.

What Each Chinese Measure Cost Japan

Japan’s economy is ¥688tn, about $4.33tn, and grows about 0.9% in a good year. That last number is the one that makes the rest mean something.

The rare earth figure is a scenario, not a loss anyone has taken.i$44bn is Japan’s own estimate of what a full year of being completely cut off would cost. That has not happened. It is on this table because it is the size of the threat, not the size of the damage, and it must never be added to the tourism figure.

• China took 22.5% of Japan’s seafood exports and 51% of its scallops. 64% of Hokkaido’s catch went to China.
• Chinese visitors were 8.2m in ten months, a quarter of all arrivals, 2 trillion yen of spending, 21% of the total.
• 30% of booked trips were cancelled within weeks.
• Japan still set a tourism record in 2025, 42.7 million visitors, despite the Chinese collapse.

The Single Most Striking Number

Yttrium, one of the rare earths Japan cannot make itself. Same metal, same week, two prices.

Six Chinese producers of the same products are up between 74% and 312% this year.

What Escaping Costs Against What The Squeeze Costs

This is the comparison that explains why Japan has not simply walked away from the relationship.

Treat the $100bn as a range, not a figure.iIt is the defence ramp from about 1% of GDP to the 3.5% target, and it is our arithmetic rather than anyone’s reporting. The 1% baseline is the low end of a contested range. On a 2% baseline, which is where Japan already sits on the NATO-style count, the cost is nearer $65bn and the ratio is about 9x. Both versions make the same point, so we show the cautious one and say so.

The Squeeze, In Order

1. 7 Nov 2025Takaichi tells parliament a Chinese attack on Taiwan could be a survival-threatening situation for Japan
2. 14 Nov 2025Citizens told not to travel to Japan, students warned off studying there
3. 19 Nov 2025All Japanese seafood imports banned
4. 24 Feb 202640 Japanese firms placed on a dual-use export control list
5. 18 and 25 May 2026Two Japanese employees detained in Dalian over alleged rare earth smuggling
6. May 2026Xi attacks Japanese remilitarisation at the Trump summit, the most heated part of two days
7. 24 Jun 2026Public hotline opened for reporting rare earth export violations
8. 29 Jun 2026Control list expanded to Mitsubishi Electric and Mitsubishi Heavy subsidiaries

The Japanese Bond Numbers

• 2.6% to 3%The FY2026 budget went in assuming a 2.6% borrowing cost and was raised to 3% during compilation after rates rose.
• 3.8%What the FY2027 request is being built on. This is the rate the table above uses.
• 2.95%Where the 10-year JGB peaked in the week of 18 August 2026, the highest since 1996. It was 2.87% on 21 August 2026.
• 163.73The yen’s low in late July 2026, a forty-year low. It was 159.21 on 14 August 2026.
• 5.23%The US 30-year on 20 August 2026, for comparison.
• $770bnJapan’s total FY2026 budget, with $190bn of fresh borrowing on top of everything in the table above.

Deutsche Bank calls 3% a critical defence line for fiscal credibility, because it is the government’s own budget assumption.

The American Rescue

1. 31 July 2026First joint US-Japan intervention to support the yen in almost 30 years
2. 31 July 2026The US sold euros, not dollars, and told the ECB only after the trade had executed
3. Over two daysJapan spent about $87bn, more than its entire previous record, and the yen gave back half its gains within a fortnight
4. 19 Aug 2026The US Treasury doubled its long-end buybacks
5. StandingJapan holds roughly $1 trillion of US Treasuries, the largest foreign holder

What This Page Does Not Claim

A sheet full of numbers gets checked harder than a video does, so here is what I am deliberately not saying.

• China did not attack or sell Japan’s bond market. China held about 14.8 trillion yen of JGBs as of June 2026 and there is no evidence of dumping. The argument is that China handed Japan a bill, and the bond market broke because of when the bill arrived.
• The $44bn rare earth figure is a scenario, not a realised loss. It is Japan’s own estimate of a full year completely cut off. That has not happened, and it must never be added to the tourism figure.
• The $100bn defence ramp, the 13x ratio and the whole of the refinancing table are our own arithmetic. They are not anyone’s reporting.

Where Every Number Came From

• The refinancing table. Japan’s Ministry of Finance, for all three inputs: the term-to-maturity structure of general bonds on the FY2026 initial budget basis, the interest rate weighted average of general bonds at the end of FY2025, and the FY2027 budget request rate. The arithmetic on top of them is ours.
• The Chinese measures, the yen and the intervention. The Financial Times. Goldman Sachs for the tourism hit as a share of GDP.
• The budget assumptions. Japan’s Ministry of Finance and Nikkei for the 2.6, 3 and 3.8 percent figures.
• Yields and the exchange rate. FRED for GDP, the US 30-year and the yen. The 10-year JGB refreshed 21 August 2026.
• Yttrium pricing. Baiinfo, via the Financial Times.

Built 2026-08-23. Market figures refreshed the same day. The refinancing table is arithmetic on Ministry of Finance data, not a forecast, and it assumes Japan borrows nothing further.