When you deposit money into a bank, it may feel as though the money is simply sitting safely in an account waiting for you to use it. In reality, banking is a business built around putting money to work.
Banks accept deposits, provide loans, invest in financial assets, process payments and offer a wide range of financial services. These activities generate income, while the bank also pays expenses such as interest to depositors, salaries, technology costs, taxes and provisions for loans that may not be repaid.
So, how exactly does a bank make money from your money?
The answer is more complicated than simply saying that the bank takes your deposit and lends it to someone else. Modern banks use several sources of funding and several methods of generating income.
The basic idea: banks earn from the use of money
One of the main functions of a commercial bank is financial intermediation. Banks bring together people and businesses that have money with people and businesses that need financing.
For example, a customer may deposit money into a savings account. Another customer may need a loan to buy a house, expand a business or purchase a vehicle.
The bank can use its balance sheet to provide financing while maintaining enough liquidity to meet customers’ withdrawal and payment needs.
Banks generally try to earn a higher return on assets such as loans and investments than the cost they incur to obtain funding such as deposits and wholesale borrowing.
The difference between interest income and interest expense is known as net interest income. Net interest margin (NIM) is a related measure that compares net interest income with the bank’s average earning assets. The Federal Deposit Insurance Corporation and Federal Reserve use NIM as an important measure of banking profitability. (FDIC)
1. Banks earn interest from loans
Lending is one of the most familiar ways banks generate income.
Banks provide different types of loans, including:
- Personal loans
- Business loans
- Mortgages
- Vehicle loans
- Credit-card lending
- Overdrafts
- Agricultural loans
- Education loans
- Working-capital facilities
Borrowers pay interest and, depending on the product, may also pay other charges associated with the facility.
Suppose a bank finances a business at an annual interest rate of 20%. The bank does not necessarily keep the entire 20% as profit. It has to consider the cost of funding, expected loan losses, operating expenses, taxes and other costs.
This is why the interest rate charged to a borrower should not be confused with the bank’s actual profit margin.
Banks also charge different rates to different borrowers because lending carries different levels of risk. A borrower considered more likely to default may face a higher interest rate or stricter lending conditions. The Bank of England explains that banks price loans partly to reflect the risk that borrowers may not repay. (Bank of England)
2. Your deposit can help provide funding
This is where your money becomes important to the banking business.
When you put money into a bank account, the bank records a liability because it owes that money to you. At the same time, the bank receives funding that can support its lending and investment activities.
However, there is an important misconception to correct.
The bank does not normally take your exact GH¢10,000 and hand those same notes to another customer as a loan.
Banks manage deposits and other funding sources collectively. Furthermore, modern commercial-bank lending can create new bank deposits rather than simply transferring existing deposits from one customer to another. The Bank of England explains that when a bank makes a loan, it normally creates a corresponding deposit in the borrower’s account. (Bank of England)
This does not mean banks can create unlimited money. They face capital, liquidity, regulatory, risk-management and settlement constraints, among other limitations. (Bank of England)
3. Banks do not necessarily pay you the same interest they earn
Another important part of the business model is the difference between the return a bank earns and what it pays for funding.
Imagine, purely as a simplified illustration, that a bank’s funding costs work out to an average of 5%, while some of its earning assets generate an average return of 15%.
That does not mean the bank automatically makes 10% profit.
The 10-percentage-point difference is only a simplified spread. The bank still has to cover employee salaries, branches, technology, cybersecurity, regulatory costs, taxes, loan losses, deposit insurance or similar protection costs, funding expenses and many other costs.
This is why net interest margin is not the same thing as net profit.
The distinction is important because a bank can have a positive interest margin and still experience lower profits if its operating costs or credit losses are high.
4. Banks also invest your deposits and other funds
Loans are not the only assets through which banks earn interest.
Banks can invest in financial assets such as government securities and other eligible investments, depending on the laws and regulations governing their operations.
This is particularly important in Ghana.
According to the Bank of Ghana’s 2025 Annual Report, the banking industry’s total assets reached GH¢446.90 billion at the end of 2025, while gross loans and advances stood at GH¢110.97 billion. The report also shows that deposits were a major source of funding for the banking sector. (Bank of Ghana)
More importantly, Bank of Ghana data show that investment income can represent a very large part of banks’ income.
In February 2026, interest income from investments accounted for 44.3% of banks’ total income, compared with 29.2% from interest income on loans. Fees and commissions accounted for 11.3%, while other sources accounted for 15.2%. (Bank of Ghana)
This illustrates why it is inaccurate to say that banks make money only by lending deposits to customers.
5. Banks make money from fees and commissions
Interest is only one part of banking revenue.
Banks can also earn fees and commissions from services such as:
- Account-related services
- Electronic transfers
- Certain payment services
- ATM transactions and other banking services
- Foreign-exchange transactions
- Loan-related services
- Card services
- Trade-finance services
- Wealth and investment services
- Advisory services
The exact charges vary between countries, banks and products.
In Ghana, fees and commissions form a measurable part of banks’ income. Bank of Ghana data showed that fees and commissions represented 11.3% of total banking income in February 2026. (Bank of Ghana)
Therefore, even when you do not borrow money from a bank, your use of its services can still generate revenue for the institution.
6. Payment transactions can generate income
Banks operate important payment infrastructure.
When customers transfer money, use cards, receive payments or conduct other financial transactions, various institutions may earn fees associated with providing and processing those services.
The revenue does not necessarily come directly from the customer every time. Depending on the payment system, different participants can receive or pay fees.
The growth of digital banking has therefore created another important part of modern banking activity. The Bank of Ghana’s 2025 Payment Systems Oversight Annual Report noted significant changes in Ghana’s payment ecosystem during 2025, driven by technology, changing consumer behaviour and financial-sector participation. (Bank of Ghana)
7. Banks can earn money from foreign exchange
Banks also facilitate foreign-exchange transactions.
For example, customers and businesses may need to convert one currency into another when:
- Importing goods
- Exporting products
- Travelling
- Receiving international payments
- Sending money internationally
- Conducting cross-border business
Banks may earn income from the spread between prices at which they buy and sell currencies, as well as from related services.
Foreign-exchange income can therefore become another source of non-interest revenue.
8. Banks earn money from corporate and investment services
Larger banks may offer services beyond ordinary savings accounts and loans.
Depending on their licence and business structure, these may include:
- Investment banking
- Securities services
- Corporate finance
- Financial advisory
- Asset management
- Wealth management
- Custody services
- Trade finance
- Underwriting and capital-market services
Customers and businesses pay for some of these services through fees, commissions or other charges.
Consequently, the business model of a large financial institution can be considerably broader than the traditional “take deposits and make loans” model.
9. Banks must also manage the risk that borrowers will not repay
It would be misleading to describe all interest collected by a bank as profit.
Lending involves risk.
If a bank lends GH¢1 million and the borrower fails to repay a substantial portion, the bank can suffer a significant loss. Banks therefore set aside provisions and recognise credit losses when appropriate.
This is one reason banks carefully assess borrowers before approving loans.
In Ghana, the Bank of Ghana reported that the banking industry’s non-performing loan (NPL) ratio fell from 21.8% at the end of 2024 to 18.9% at the end of 2025, although it continued to describe credit risks as elevated. (Bank of Ghana)
The existence of bad loans is one of the major reasons why a bank’s interest income cannot simply be treated as profit.
10. Banks have significant operating costs
Running a bank is expensive.
Banks must pay for:
- Employees
- Branches and offices
- ATMs
- Computer systems
- Mobile and internet banking platforms
- Cybersecurity
- Fraud prevention
- Regulatory compliance
- Insurance and risk management
- Marketing
- Electricity and communications
- Professional services
- Taxes
- Loan-loss provisions
Therefore, a bank’s revenue must first cover these expenses before the remaining amount becomes profit.
Bank of Ghana data illustrate this distinction. Ghana’s banking sector recorded a cost-to-income ratio of 47.31% in 2025, meaning operating costs represented a substantial portion of the income generated by the sector. (Bank of Ghana)
A simple example
Consider this simplified example.
Imagine you deposit GH¢10,000 into a bank.
The bank does not necessarily pay you a large amount simply for keeping the money there. Suppose, for illustration, that the applicable deposit return is 5% per year.
You would receive:
GH¢10,000 × 5% = GH¢500
Now suppose the bank’s earning assets generate an average return of 15%.
At a purely illustrative level:
GH¢10,000 × 15% = GH¢1,500
The apparent difference is:
GH¢1,500 − GH¢500 = GH¢1,000
But that GH¢1,000 is not the bank’s final profit.
The bank still has to account for credit losses, operating costs, taxes, funding costs, liquidity requirements and other expenses.
Also, this example should not be interpreted to mean that the bank takes your particular GH¢10,000 and lends exactly that money to someone else. It is simply a simplified illustration of how the economics of funding and earning assets can work.
What happens if everyone withdraws their money?
Banks must be prepared for customers to withdraw or transfer their deposits.
They therefore cannot safely operate on the assumption that every customer will leave every cedi in the account indefinitely.
Banks maintain liquidity and manage the maturity and availability of their assets and liabilities. They also have access to different sources of funding and, where applicable, central-bank facilities subject to the relevant rules.
The Bank of Ghana reported that Ghana’s banking sector had liquid assets equivalent to 96.3% of total deposits at the end of 2025, demonstrating the importance of liquidity management in the sector. (Bank of Ghana)
This does not mean every individual deposit is sitting in cash. Rather, it is a sector-level liquidity measure showing banks’ capacity to meet financial obligations.
So, does the bank actually “use your money”?
Yes, but the answer needs some qualification.
Your deposit becomes part of the bank’s overall funding and balance-sheet structure. The bank can use its financial resources to support lending, investment and other activities while maintaining the liquidity and capital required by regulation.
But modern banking is not simply a system in which a bank stores your physical cash in a vault and then lends the exact same cash to another person.
Commercial banks create deposits when they make loans, while deposits and other forms of funding support the bank’s overall balance sheet. (Bank of England)
Why banks want your deposits
Deposits are valuable to banks because they provide a source of funding.
Banks therefore compete for customers’ deposits by offering different products, interest rates and services.
For customers, however, the highest interest rate is not necessarily the only consideration. Factors such as fees, accessibility, security, liquidity, customer service and the financial strength and regulatory status of the institution can also matter.
For banks, deposits are generally not “free money.” They are liabilities that must ultimately be repaid to customers, subject to the terms of the account.
How banks make money from money in one picture
The process can be simplified as follows:
Customers and businesses provide deposits → the bank manages those funds alongside other sources of funding → the bank makes loans and investments → those assets generate interest and other income → the bank also earns fees and commissions → operating costs, funding costs, taxes and loan losses are deducted → the remaining amount contributes to profit.
This is why banks can make money even when an individual customer never takes out a loan.
A customer who maintains a deposit may contribute to the bank’s funding base. The same customer may also generate revenue by using cards, transfers, foreign exchange, investment products or other banking services.
What this means for ordinary customers
Understanding the banking business model can help customers make better financial decisions.
If you keep money in a bank account, pay attention to the interest rate you receive, account charges, transaction fees and the terms attached to the account.
If you borrow money, do not look only at the advertised interest rate. Consider the total cost of borrowing, including applicable fees and other charges.
In Ghana, the Bank of Ghana publishes information on Annual Percentage Rates (APRs) and related lending information to help promote transparency in the pricing of banking services. The Bank notes that an indicative APR may differ from the actual APR offered to an individual customer because pricing can depend on the customer’s circumstances and the bank’s assessment of risk. (Bank of Ghana)
Ultimately, banks are businesses. Their central role is to move money through the economy while managing risk, liquidity and regulatory requirements. They earn income primarily through interest-generating activities, but modern banking revenue also comes from investments, fees, payments, foreign exchange and other financial services.
So, when you ask “How do banks make money from my money?”, the most accurate answer is:
They use deposits and other sources of funding as part of a larger financial system, generate income from loans and investments, collect fees for services, manage the associated risks and costs, and keep the resulting surplus as profit.
Certainly. You can add the following section to the article. I have kept the explanations short and in simple English.
Key banking terms explained
Deposit: Money that a customer puts into a bank account. The bank records the deposit as money it owes to the customer.
Loan: Money that a bank lends to an individual or business, which the borrower is expected to repay, usually with interest.
Interest: The cost of borrowing money or the return earned on money deposited or invested. A borrower pays interest, while a depositor may receive interest.
Interest income: Money a bank earns from activities such as lending money or investing in interest-paying assets.
Interest expense: Money a bank pays to obtain funding, including interest paid to customers on certain deposits and interest paid on money borrowed by the bank.
Net interest income: The difference between the interest a bank earns and the interest it pays. It is one of the main sources of income for many banks.
Net interest margin (NIM): A measure of how much a bank earns from its interest-generating assets after taking account of the interest it pays on its funding. It helps show how effectively a bank is earning from its balance sheet.
Liquidity: A bank’s ability to have enough cash or assets that can quickly be converted into cash to meet its obligations when they are due. For example, a bank needs liquidity to handle customer withdrawals and payments. Liquidity does not mean that all customers’ deposits are kept as physical cash in the bank.
Capital: The bank’s own financial resources that can absorb losses and help protect the institution when things go wrong. Capital is different from customer deposits because deposits are money the bank owes to its customers.
Asset: Something that has financial value to the bank. Loans made to customers and investments such as certain securities are examples of bank assets.
Liability: Money or an obligation that the bank owes to someone else. Customer deposits are generally recorded as liabilities because the bank owes those funds to depositors.
Fees and commissions: Charges a bank earns for providing certain services, such as some transfers, payment services, account services, foreign-exchange transactions and other financial services.
Credit risk: The risk that a person or business that borrowed money will fail to repay the bank as agreed.
Non-performing loan (NPL): A loan where the borrower has failed to make payments as required for a significant period or where repayment is otherwise considered unlikely. A high level of NPLs can reduce a bank’s profitability.
Operating costs: The expenses involved in running a bank, including employee salaries, branches, technology, cybersecurity, regulatory compliance and other business expenses.
Financial intermediation: The process through which banks connect people and organisations that have money with those that need financing. Banks perform this role by accepting deposits and providing loans and other financial services.
Earning assets: Assets that generate income for a bank. Loans and certain investments are common examples.
Funding: The money and other resources a bank uses to finance its activities. Customer deposits are one important source of bank funding, but banks can also obtain funding from other sources.
Profit: The amount left after a bank’s income is greater than its expenses, including funding costs, operating costs, loan losses and taxes.
A simple way to understand the terms
Think of a bank like a financial business with a large balance sheet:
Deposits and other funding → bank’s available resources → loans and investments → income → expenses and losses → profit
Liquidity is what helps the bank meet its short-term obligations along the way, while capital provides a financial cushion against losses.
Disclaimer
This article is intended for general educational and informational purposes only. It does not constitute financial, investment, banking or legal advice. Interest rates, fees, banking regulations, deposit-protection arrangements and financial products vary by country and institution and can change over time. Readers should consult their bank, the relevant financial regulator or a qualified financial professional for advice concerning their individual circumstances.
References
Bank of Ghana. (2026a). 2025 annual report and financial statements. Bank of Ghana – 2025 annual report and financial statements
Bank of Ghana. (2026b). Monetary policy report: March 2026. Bank of Ghana – Monetary policy report, March 2026
Bank of Ghana. (2026c). Payment systems oversight annual report 2025. Bank of Ghana – Payment Systems Oversight Annual Report 2025
Bank of Ghana. (2026d). APR for March 2025. Bank of Ghana – Annual Percentage Rates
Bank of England. (2014). Money creation in the modern economy. Bank of England – Money creation in the modern economy
Bank of England. (2025). What do banks do? Bank of England – What do banks do?
Federal Deposit Insurance Corporation. (2021). The historic relationship between bank net interest margins and short-term interest rates. FDIC – The historic relationship between bank net interest margins and short-term interest rates
Federal Reserve Board. (2026). Banking system conditions. Federal Reserve – Banking system conditions
