Japan is about to try something big. A lot of it is aimed at AI, semiconductors, and gaming.
The government introduced the roadmap in late June. But it does not say how much of that total will come from public money, and that silence is a big reason investors are skeptical.
Prime Minister Sanae Takaichi backs the spending plan, but her wider budget ideas have raised eyebrows. Kiuchi, the growth strategy minister who helped build the roadmap, says the worry is out of proportion.
"Japanese fiscal policy is not so expansionary as you think, because we put great importance on sustainability," he told Bloomberg Television.
The plan also changes how Japan measures itself. Under Kiuchi, it shifts away from an annual budget target and toward a target for government debt as a share of GDP, the total size of the economy.
The first draft of that plan caused a market backlash because it sounded like the government wanted more say over the central bank. A revised version added a note affirming the Bank of Japan's independence.
Kiuchi is used to political fights. A former Foreign Ministry official, he has been a lawmaker in the ruling Liberal Democratic Party since 2003.
Kiuchi's main argument is that the yen gets stronger if Japan grows. "As investment in Japan and yen denominated assets increases, demand for the yen will naturally rise," he said.
Asked whether the BOJ should keep raising rates, Kiuchi said: "I think so."
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He added: "We respect the bank's independence and we leave the methods of conducting policy up to the BOJ."
That message matters because the yen has been moving on headlines. A rare coordinated intervention with the U.S. helped lift the yen.
On Monday, August 10, 2026, the central bank published the summary of its July meeting, showing some officials pushing for faster rate hikes and possibly bigger moves.
Kiuchi did not strongly oppose that idea, and markets already expect a hike in September or October.
Kiuchi has attended BOJ meetings to present the government's views. That habit makes some investors uneasy, because they are not sure the government really keeps its hands off interest-rate policy.
Kiuchi wants to make one thing clear: this is not spending for fun. "We won't invest to produce mangoes or papayas or something like that," he said.
The money is for industries that matter to Japan's global standing, like AI, semiconductors, and gaming. Kiuchi says that focus lifts productivity and widens the tax base.
The plan also includes a two-year sales tax cut that would cost about ¥5 trillion a year. Kiuchi shrugged off the price tag. "It's not so difficult to secure ¥5 trillion," he said. He says reforms to government revenue and spending will free up enough savings to cover it.
Kiuchi also shares Takaichi's goal of pairing a strong economy with fiscal stability. He calls that "the essence of responsible proactive public finances and the core of this historic shift."
For investors holding Japanese stocks, bonds, or the yen itself, this debate is not abstract. The yen is the bridge between Japan's economy and your returns.
If growth picks up and the yen strengthens, foreign investors can feel it from both directions. If the plan turns into more spending than growth, a weaker yen can drag returns down just as easily.
Japan's economy has struggled with deflation and weak growth for decades, and previous stimulus efforts have produced mixed results. The yen's slide to multi-decade lows has made imports pricier and squeezed households, adding urgency to the government's push for sustainable growth.
Nobody knows which path this takes. The government says the plan is sustainable, and faster rate hikes could support the yen on their own.
Still, the market has heard bold promises before, and Kiuchi knows trust is in short supply. "Please believe me," he said.
It is a sign that Japan is trying to change the rules of its own economy. The results will land in your portfolio long before the political argument is settled.
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