Japan's food-tax cut risks 4.4 trillion yen as JGB yields climb

Japan's plan to cut the food consumption tax to 1% would strip 4.4 trillion yen from annual revenue at the worst possible time for its bond market.

Japan's plan to cut the consumption tax on food to 1% from 8% would strip an estimated 4.4 trillion yen from annual government revenue, testing fiscal room just as 10-year bond yields hover near multi-decade highs.

"With limited clarity on funding channels, additional debt issuance remains a plausible outcome," said Justin Heng, APAC rates strategist at HSBC Global Investment Research.

The 10-year Japanese government bond yield traded around 2.85% on Tuesday, close to multi-decade highs. Debt-servicing costs already account for about a quarter of Japan's fiscal 2026 budget, with interest payments projected to rise from 13 trillion yen in fiscal 2026 to 21.6 trillion yen in fiscal 2029 under the Finance Ministry's 3% nominal-growth scenario.

The gamble is that a 370 trillion yen public-private investment plan through fiscal 2040 lifts productivity and tax revenue before higher interest costs bite. If it fails, Japan's debt burden — projected at roughly 204% of gross domestic product in 2026 by the IMF — becomes harder to service.

Prime Minister Sanae Takaichi has pushed the bill through key Liberal Democratic Party committees, with cabinet approval sought this month and parliament debate in the autumn. The cut, the first since the tax's introduction in 1989, would run for two years from April 2027, with cash payments offsetting the 1% levy for select groups.

The plan has drawn criticism from within her own party, including former ministers Taro Kono and Takeshi Iwaya, and from the IMF, which called the reduction "an untargeted measure that would erode fiscal space and add to fiscal risks" in its 2026 country report. Kono warned on X that the plan could undermine confidence in Japan's fiscal position, push interest rates higher and weaken the yen.

Yields Climb as Markets Price Inflation

Yields are rising because Takaichi's program is highly inflationary and markets fear the Bank of Japan is behind the curve, said Jesper Koll, expert director at Monex Group. The BOJ's commitment to keep raising interest rates and reduce JGB purchases is also likely to push up Japan's interest costs, constraining fiscal room. The central bank's overnight rate stands at 1%, leaving a gap of nearly 185 basis points to the 10-year yield.

Growth Bet vs. Fiscal Reality

A possible silver lining is that the government's target of more than 370 trillion yen in investment could support fiscal health, with about 90% of financing expected from the private sector, Koll said. If it draws in investment, raises productivity and expands the tax base, stronger growth could make Japan's debt burden more manageable.

Stefan Rittner, senior portfolio manager at Allianz Global Investors, said markets were more likely to accept measures that improve productivity, labor supply and long-term growth than spending aimed mainly at supporting consumption. "Japan's debt story is ultimately a growth story," Rittner said. "If fiscal spending lifts growth and productivity, markets will be more forgiving. If it merely supports consumption, investors may become more skeptical."

Higher yields could also start drawing investors. John Li, head of Asia fixed income credit strategy at J.P. Morgan Private Bank, said the gap between long-term yields and the BOJ's 1% overnight rate could attract domestic buyers, including Japanese life insurers.

The last time Japan's 10-year yield traded near current levels was in the early 2000s, before the BOJ's quantitative easing program compressed yields for two decades. If the tax cut passes without a credible funding plan, the risk is that long-end yields push higher, raising the government's interest bill and squeezing the very fiscal space Takaichi's growth agenda depends on.

This article is for informational purposes only and does not constitute investment advice.