Core argument: China’s worsening sex ratio imbalance drives roughly 50% of household savings growth, explaining structural excess savings that produce current account.
One motivation for personal or household saving is to raise one’s competitiveness in the dating and marriage market. This component of saving tends to rise with an increase in the imbalance of the male-female ratio in the marriage age cohort (in either direction). In China’s case, a rise in the male-female ratio in the youth cohort since the 1990s has translated into a powerful force to lift the household saving rate. As the marriage market becomes increasingly competitive for young men, parents with a son raise their saving to improve their son’s relative standing in the [marriage] market. A combination of having a son at home and living in a region with a skewed sex ratio greatly pushes up the household saving rate, [while] savings by households with a daughter are not systematically related to the local sex ratio. Across regions, the local sex ratio in the youth cohort strongly predicts the local household saving rate. Their estimates suggest that this mechanism accounts for more than half of the increase in China’s household saving rate between 1990 and 2007. This upward pressure on saving, combined with relatively stable investment demand, generates persistent excess saving and a higher current account surplus.The Chinese Current Account Imbalances: Puzzles, Patterns, and Possible Causes
AI Summary. China's current account surplus is driven primarily by structural factors — a worsening sex ratio imbalance and underdeveloped financial markets — rather than trade or industrial policy. The sex ratio shift explains roughly half of household savings growth, while restricted access to finance for private firms raises corporate savings, both
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A less-discussed structural factor behind China’s high saving and CA surplus is its skewed sex ratio. Excess marriageable men lead parents of sons to increase saving to boost marital prospects, explaining half of the rise in saving btw 1990 and 2007.
Takeaways by Macro Roundup® AI
- China’s worsening sex ratio imbalance drives roughly 50% of household savings growth, explaining structural excess savings that produce current account.
- Sector-level subsidies boost both exports and imports simultaneously, resulting in limited economy-wide effects on trade imbalances despite significant partial equilibrium.
- Financial constraints on non-state firms combined with productivity growth lead to elevated corporate savings rates, requiring structural reforms.


