Bank capital: what really limits how much banks can lend
Beijing is borrowing 300 billion yuan to lift the core capital of eight state-owned financial institutions. The press reports the amount injected. The number that matters sits elsewhere: one yuan of capital allows more than nine yuan of risk-weighted assets. What limits a bank is not the money it holds, but the money it owns.
The fact
China’s Ministry of Finance said on 7 September it will shortly issue 300 billion yuan of special treasury bonds, around 44 billion dollars, to top up the core capital of eight state-owned financial institutions. The day before, those eight had put their plans at 360 billion yuan: the 300 billion the state is borrowing makes up the public share, with China National Tobacco supplying the balance. And five of the eight recipients are insurers, not banks.
Why it deserves attention
Core capital is not the money a bank lends. It is the bank’s own resources, the cushion that absorbs losses before depositors are touched. Regulation forces a bank to hold a slice of it against its risk-weighted assets, meaning its exposures counted according to the risk each one carries. At the end of June 2026, the average core capital ratio of Chinese commercial banks stood at 10.72%. One yuan of capital therefore carries roughly nine.
That is where the real effect sits: the 260 billion yuan going to the two commercial banks in the group, ICBC and Agricultural Bank of China, supports something like 2,400 billion yuan of additional risk-weighted assets, more than nine times the sum supplied. The detour reveals what actually throttles credit. A bank short of capital rations loans even when rates fall: the binding constraint is not the price of money, it is the regulatory cushion. For the firm seeking finance or the household after a mortgage, in Shanghai as in São Paulo or Warsaw, the question is not only “at what rate” but “does the bank still have room”.
The trade-off is fiscal: the state borrows in order to recapitalise institutions that will then lend to, or insure, the private sector. Beijing already issued 500 billion yuan under the same design in 2025.
To understand why capital, and not reserves, governs credit, read the Fundamental: “Money creation: how banks conjure the world’s money supply.”
You’ll learn how every loan manufactures money that did not exist a second earlier, why the reserve multiplier taught at school is a myth, and what the Basel accords really cap.
Read the Fundamental →
