Thailand is facing mounting concerns over prolonged low growth and persistent deflationary pressures, drawing comparisons with Japan’s decades-long economic stagnation. The Southeast Asian country’s main policy interest rate remains at a historically low 1 percent, one of the lowest globally, as the Bank of Thailand has held rates steady for three consecutive meetings despite rising global inflationary pressures linked to the conflict in the Middle East.

While Japan raised its benchmark interest rate to 1 percent in June to combat inflation—the first increase after years of negative rates and deflation—Thailand’s enduring low rates underscore structural challenges that could usher in an extended period of subdued economic activity and minimal inflation, often referred to as “Japanification.” Factors contributing to this outlook include high household debt, an aging population, and stagnant consumer demand.

“Asia as a whole faces risks due to aging demographics, and Thailand is particularly exposed due to its already elevated debt levels,” said Louise Loo, head of Asia economics at Oxford Economics. Although China faces similar demographic trends, its broader economic and fiscal capacities provide it with more tools to support growth, she noted.

Economists describe Thailand’s interest rate environment as a symptom of deeper, structural issues rather than a cyclical downturn. Nond Pruesirki, senior economist at Siam Commercial Bank, pointed to weak domestic demand driven by demographic shifts and heavy household indebtedness as key constraints on consumer spending. Household debt has reached 86 percent of GDP, the highest among upper middle-income nations, which places significant portions of income toward debt servicing rather than consumption.

Thailand experienced deflation for a full year prior to recent geopolitical shocks, with inflation briefly rising due to the Middle East conflict before easing once more, as headline inflation fell to 1.95 percent in July. Economic growth has remained sluggish, averaging around 2 percent annually, a pace insufficient for the country’s goal of reaching high-income status by 2037.

Bank of Thailand Assistant Governor Don Nakornthab described the growth trajectory as “low and uneven” and acknowledged the central bank’s limited capacity to further stimulate the economy through monetary policy alone. He emphasized the need for coordinated fiscal policies and targeted financial measures to bolster expansion.

Demographic challenges are central to the outlook. Thailand’s fertility rate stands at 1.2 children per woman—well below the 2.1 level required to maintain a stable population—prompting projections that the population could decline from 67 million to 30 million over the next five decades. This shrinking workforce contributes to muted inflation and interest rates, according to Miguel Chanco, chief emerging Asia economist at Panthero Macroeconomics.

The combination of aging demographics and high indebtedness has weakened the effectiveness of low interest rates in stimulating growth and inflation. “The policy transmission is broken in Thailand,” Loo said, suggesting increasing reliance on government fiscal support going forward.

Japan’s approach to its long-running deflationary challenges involved significant government spending and aggressive monetary easing under former Prime Minister Shinzo Abe. However, economists warn that Thailand lacks the fiscal flexibility to replicate this strategy. The government is expected to begin reducing stimulus programs next year as its public debt nears a self-imposed ceiling of 70 percent of GDP.

Aris Dacanay, senior ASEAN economist at HSBC, described the impending fiscal tightening as necessary and predicted that sluggish growth will persist, placing greater pressure on monetary policy to compensate. He expects the central bank to maintain the policy rate at 1 percent through the end of 2024.