Recent data from the International Monetary Fund (IMF) and the U.S. Bureau of Economic Analysis (BEA) show that the Golden State’s nominal gross domestic product (GDP) reached about $4.1 trillion in 2024 .

California’s economic lift has been well known for years, but it wasn’t until April 2025 that the state officially overtook Japan. Governor Gavin Newsom’s office announced that California’s nominal GDP of $4.1 trillion was ahead of Japan’s $4.02 trillion and left California behind only the United States ($29.18 trillion), China ($18.74 trillion) and Germany ($4.65 trillion).

Newsweek confirmed the IMF and BEA figures, noting that the comparison places California fourth in global rankings. The state’s growth rate of 6 % in 2024 also outpaced the top three economies (U.S. 5.3 %, China 2.6 %, Germany 2.9 %).

Why California’s economy is so big

California is the largest sub‑national economy in the world. Finance, business services, government and manufacturing are among the most dominant sectors.

Major coastal cities like Los Angeles and San Francisco are centres for media (Hollywood), technology and trade, while the Central Valley’s agriculture industry produces over half of America’s fruits, vegetables and nuts.

California also hosts many of the world’s most valuable companies . Silicon Valley is home to Apple, Alphabet, Nvidia and scores of other technology giants, and 78 of the Fortune 100 companies are headquartered in the state. This concentration of innovation attracts venture capital and skilled labour, feeding a self‑reinforcing cycle of economic growth.

Governor Newsom attributes the state’s prosperity to investments in people, sustainability and innovation. California has been the top U.S. state for new business starts and access to venture capital, while also leading the nation in agricultural production.

More than 36,000 manufacturing firms employ about 1.1 million Californians . Even as production costs rise, these firms continue to create industries spanning aerospace, electronics and zero‑emission vehicles.

While California now sits above Japan, its position is not guaranteed. Japan’s economy is projected to rebound by about 4 % in 2025, and India, the world’s fastest‑growing large economy, is expected to continue climbing.

Governor Newsom’s office cautions that India could surpass California as early as 2026. Economic rankings can also shift due to currency fluctuations, recession or policy changes. For example, California’s ranking rose partly because Japan’s growth slowed in 2024, illustrating how relative performance matters.