It means Nigerian banks are being forced to keep a very large part of customers’ money locked away with the Central Bank of Nigeria instead of using it to do business and make profits from it.
Here is the simple breakdown:
What is CRR?
CRR means Cash Reserve Ratio.
It is the percentage of customers’ deposits that banks must keep with the CBN.
So if people deposit:
₦100 billion in a bank
and CRR is 50%
the bank must keep:
₦50 billion with the CBN
and can only use ₦50 billion for lending, investment, and operations.
Why is this painful for banks?
The report says the CBN does not pay meaningful interest on that reserved money.
So the banks are basically:
holding customers’ money,
but unable to use half of it,
and not earning much from the locked-up portion.
That is why the report used the word “sterilizes.”
In banking language, “sterilized funds” means money that is trapped and inactive.
Why did the report say banks may be losing “trillions”?
Banks normally make money by:
giving loans,
investing in treasury instruments,
financing businesses,
charging fees on financial activities.
If half their deposits are locked away, they lose opportunities to earn income from that money.
Example:
If a bank could normally earn 20% yearly return on ₦1 trillion:
But if half is sterilized:
only ₦500 billion can work,
meaning potential income drops sharply.
Across the whole banking industry, that “lost earning power” can amount to trillions of naira over time.
Why did the CBN introduce such a high CRR?
Usually to:
reduce excess money in circulation,
fight inflation,
stabilize the naira,
control liquidity in the economy.
Nigeria has battled:
high inflation,
FX pressure,
excess liquidity,
speculative attacks on the naira.
So the CBN uses CRR as a tightening tool.
Then why are Nigerian banks still posting huge profits?
That is the “paradox” the report is talking about.
Despite the restrictions, many Nigerian banks like:
Guaranty Trust Holding Company
Zenith Bank
United Bank for Africa
Access Holdings
still make strong profits because of:
High interest rates
FX revaluation gains
Digital banking income
Large customer base
Treasury operations
So investors see:
“strong profits today”
but also fear:
policy uncertainty,
CRR restrictions,
inflation,
naira risk,
regulatory surprises.
That is why Nigerian bank stocks often trade cheaper than banks in places like South Africa or Morocco even when profits are strong.
In plain village-market language
Imagine Mama Ngozi contributes ₦100,000 to a cooperative society.
But the government says:
“You must keep ₦50,000 inside a locked box.”
“You cannot trade with it.”
“You will not earn profit from it.”
Only ₦50,000 remains for business.
That reduces how much profit the cooperative can make.
That is basically what the report says is happening to Nigerian banks.