Japan’s 30-year bond draws 3.86 times cover as real household spending falls 3.3 percent
Japan’s Ministry of Finance sold 30-year government bonds on 6 August 2026 into firm demand, published international reserves for the end of July on 7 August, and the Statistics Bureau released June household spending the same morning. Taken together the three describe an economy with a stable external position and a household sector still losing ground to prices.
The auction covered issue number 91, carrying a 4.0 percent coupon and maturing on 20 June 2056, with an issue date of 7 August.
| Thirty-year auction, 6 August 2026 | Result |
|---|---|
| Competitive bids received | 1,761.1 billion yen |
| Competitive bids accepted | 455.8 billion yen |
| Competitive cover, our calculation | about 3.86 times |
| Weighted average price and yield | 100.86, yielding 3.937 percent |
| Lowest accepted price and yield | 100.65, yielding 3.952 percent |
| Tail, our calculation | 1.5 basis points |
| Allotment at the lowest accepted price | 48.9473 percent |
| Non-price competitive allocation | 143.4 billion yen |
A tail of 1.5 basis points on our calculation is narrow for a thirty-year sale, and both the average and lowest accepted prices cleared above par. Our reading is that the long end absorbed the supply comfortably, which matters because the Bank of Japan is no longer the buyer it was.
International reserves stood at 1,287,099 million dollars at the end of July, down 377 million on the month, a decline of less than 0.03 percent on our calculation.
| Japan international reserves, end-July 2026 | Millions of dollars |
|---|---|
| Total reserve assets | 1,287,099 |
| Securities | 927,332 |
| Deposits | 162,285 |
| Gold | 109,520 |
| Special drawing rights | 60,728 |
| Other reserve assets | 15,857 |
| IMF reserve position | 11,377 |
Securities were 72.05 percent of the total and gold 8.51 percent on our calculation. Gold is stated as 27.20 million fine troy ounces. Foreign currency reserves, being securities and deposits together, were 1,089,617 million dollars.
Household spending was the weak point. Average monthly consumption expenditure per household of two or more people was 290,886 yen in June, down 1.5 percent in nominal terms and 3.3 percent in real terms against a year earlier. Average monthly income per workers’ household was 1,013,986 yen, up 3.9 percent nominal and 2.0 percent real, a June level that reflects summer bonus payments.
The contrast is the point: incomes rose 2.0 percent in real terms in the month that carries the bonus, while spending fell 3.3 percent in real terms. Our reading is that the bonus was not spent.
Why it matters: the Bank of Japan raised its policy rate to around 1.0 percent in June and is reducing bond purchases on a published path, and this auction says the market can take the resulting supply at a 3.94 percent average yield without strain. What it cannot yet say is whether domestic demand can carry the adjustment. A real fall in household spending of 3.3 percent in a bonus month, alongside real income growth of 2.0 percent, points to precautionary saving rather than to weak earnings. For Gulf exporters, Japan remains a large and financially stable buyer of crude and liquefied natural gas – reserves of 1.287 trillion dollars are barely changed on the month – but a household sector that is saving rather than spending limits how much demand growth to expect.
Looking ahead: the July household survey and end-August reserves are both due in early September. The Bank of Japan’s published purchase plan takes monthly buying from about 2.7 trillion yen in the April to June 2026 quarter down by roughly 200 billion yen a quarter, to about 2.5 trillion in July to September, about 2.3 trillion in October to December, about 2.1 trillion in January to March 2027 and about 2 trillion from April 2027. The Bank’s most recent research puts the combined effect of those reductions on long-term yields at roughly 25 basis points since summer 2024.
Sources: Ministry of Finance Japan, auction result for 30-year Japanese government bonds, 6 August 2026; Ministry of Finance Japan, international reserves and foreign currency liquidity, end-July 2026, 7 August 2026; Statistics Bureau, Ministry of Internal Affairs and Communications, family income and expenditure survey, June 2026, 7 August 2026; Bank of Japan, plan for the outright purchases of Japanese government bonds, June 2026; Bank of Japan Review 2026-E-10, 4 August 2026.
