Cost of Funds

The term 'cost of funds' refers to the expenses banks and financial institutions incur to obtain money for lending to their customers. Simply put, it is the interest rate banks pay when borrowing from a Federal Reserve bank. This cost is calculated by considering the interest paid to depositors, other banks, and various institutions or investors.
What Is Cost of Funds and How to Calculate It
3 min
18-August-2025

The cost of funds refers to the interest a bank or financial institution pays to borrow money for its operations. Keeping this cost low is crucial for competitiveness. For instance, if a bank faces higher borrowing costs, it cannot offer affordable loan rates to customers. Therefore, managing the cost of funds is a key factor in sustaining profitability and maintaining market position in the financial sector.

Understanding and handling the cost of funds is essential for banks and financial institutions to keep doing well and stay competitive in India.

In the realm of finance, understanding the cost of funds is crucial for both individuals and businesses alike. This metric refers to the expense a financial institution incurs to acquire capital, which forms the basis for lending and investment activities. Exploring the nuances of the cost of funds unveils its significance in shaping interest rates, influencing economic policies, and determining profitability. Delving into its determinants, such as market rates, deposit strategies, and regulatory frameworks, sheds light on its dynamic nature and impacts on borrowers and savers alike. This article navigates through what constitutes the cost of funds, why it holds immense importance, and how it is intricately calculated and managed in the financial landscape.

What is the cost of funds?

The cost of funds is the interest rate that financial institutions, such as banks and credit unions, pay to acquire funds for lending purposes. It is the expense incurred by the lender when borrowing funds in an interbank market to finance the loan they have agreed to extend to the borrower.

The cost of funds is important for banks as it directly affects their income. Low costs mean banks can offer better loan rates and attract more deposits, boosting their earnings. High costs, however, can reduce profits and limit how much they can lend to their customers.

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How does the cost of funds work?

Banks and other places get money in several ways, each with its own cost. For example, when we put money in a bank, the bank pays us interest. When banks lend to each other or issue bonds, they also pay interest. They have to balance this cost with the money they make from lending money to others. The goal is to make as much money as possible while keeping enough cash on hand and not taking too many risks.

Why is cost of funds important?

The cost of funds is a critical metric for financial institutions, as it directly impacts their profitability. Lower costs enable institutions to offer more competitive rates on loans and attract deposits, thereby increasing revenue. On the other hand, higher costs can squeeze margins and limit lending capacity. Understanding and managing the cost of funds is essential for maintaining a healthy balance sheet and sustaining operations.

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How is the cost of funds determined?

The cost of funds depends on many things. Interest rates set by big banks are very important. Also, how reliable a bank or company is also affects the interest rates it will get. Things like how the economy is doing, what prices might do in the future, and how much people want to borrow money also play a part.

How do you calculate the cost of funds?

To calculate the cost of funds, divide a financial institution’s total interest expense for a specific period by the average borrowed funds during that same period.

The average borrowed funds are determined by taking the mean of the opening and closing balances. For example, if a bank has borrowed Rs. 1 crore on April 1, 2024, and Rs. 1.5 crore on March 31, 2025, its average balance is Rs. 1.25 crore. If the bank pays Rs. 5 lakh in interest during FY 2024–25, the cost of funds is 4% (Rs. 5 lakh ÷ Rs. 1.25 crore).

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Who pays the cost of funds?

The cost of funds is paid by the bank or company that borrows the money. For instance, banks pay interest on our savings and pay interest on loans they take. But, these costs often end up being passed on to people who borrow money, through higher interest rates, or to investors, through lower returns.

What is the fed funds rate and how does it affect the cost of funds?

The Federal Funds Rate (FFR) is the interest rate at which banks lend and borrow money from each other overnight, set by the Federal Reserve to influence the overall direction of the economy. It directly impacts short-term borrowing costs, such as credit card rates and short-term loans, and indirectly affects long-term rates, like mortgages and bonds. When the FFR is raised, borrowing becomes more expensive, and when it is lowered, borrowing becomes cheaper. This has significant implications for the economy, as it can influence inflation, employment, and economic growth.

Impact of cost of funds on lending rates

A financial institution’s cost of funds directly shapes the lending rates it offers to customers. If the cost of funds rises, banks must recover this higher expense. The most common way to do so is by raising lending rates, though the increase may not always match the rise in borrowing costs due to competition and market demand.

On the other hand, when the cost of funds declines, banks have greater flexibility to lower lending rates. This can make loans cheaper for borrowers. However, whether a bank reduces its rates depends on external factors like competitor actions, regulatory environment, and market conditions. For instance, if rivals cut rates, the bank may follow suit to remain competitive. Conversely, if peers maintain higher rates, it may also avoid reducing rates significantly, even with lower costs.

Strategies for managing cost of funds

Financial institutions can manage their cost of funds effectively by applying the following methods:

  • Diversify sources of funds: Relying on just one or two funding channels may increase borrowing costs. By raising funds from multiple sources, institutions reduce dependency and optimise their cost structure.
  • Mobilise low-cost deposits: Banks pay lower interest on current and savings accounts compared to fixed deposits. Encouraging more low-cost deposits helps bring down the average cost of funds.
  • Efficient asset-liability management (ALM): Aligning the maturity of assets and liabilities is essential. For example, financing long-term loans with long-term borrowings and short-term loans with short-term sources keeps funding costs stable.

Factors influencing the cost of funds

The cost of funds is shaped by both internal and external factors, such as:

  • Economic conditions: Inflation trends, central bank policy rates, and overall economic sentiment impact the cost of borrowing. Rising inflation usually increases funding costs.
  • Reputation and creditworthiness: A strong credit rating lowers borrowing costs, while weaker credibility makes lenders demand higher interest.
  • Competition for funds: When demand for funds is high, institutions may need to offer higher rates to attract deposits or borrowings. In a low-demand environment, the cost of funds decreases.
  • Type of funding source: The nature of the source matters. For example, banks pay higher interest on fixed deposits compared to savings accounts, directly affecting their cost structure.

Cost of funds vs Cost of capital

The cost of funds is the cost of getting money to lend or invest. The cost of capital includes all the costs of running and investing in a business, using both borrowed money and own money. The cost of capital looks at the costs of both debts (like loans) and equity (like shares).

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Key takeaways

  • The cost of funds represents the amount financial institutions must pay to obtain money.
  • Such funds are typically sourced from central banks like the Federal Reserve.
  • A lower cost of funds allows banks to earn higher margins when lending to borrowers.
  • When the cost of funds rises, consumers usually end up paying higher interest rates.
  • The spread between the cost of funds and the lending rate is a major contributor to bank profits.

Conclusion

For banks and financial places to do well and keep up with others, they need to understand and manage the cost of getting money. By getting and using money smartly, they can make more money, handle risks better, and grow healthily. Constant monitoring of market conditions and adapting strategies accordingly are essential to safely navigate the environment in which the cost of funds operates.

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Frequently asked questions

What is the formula for the cost of funds?
To find out the cost of funds, you divide the total money paid as interest by the total amount of money the bank has over a period. This gives an average cost of funds, considering different interest rates for different sources of money. This cost can also be shown as a percentage of all the assets or debts.
What is the cost of funds charges?
‘Cost of funds charges’ denotes the fees and expenses incurred by financial institutions in acquiring funds. These encompass interest payments on deposits, borrowing fees, and expenses linked to issuing debt instruments. They affect profitability and are influenced by market conditions and regulations.
How is the cost of funds calculated?

To determine the cost of funds, the total interest expense incurred by a financial institution during a given period is divided by the average borrowed funds for that same period. The average borrowed funds can be worked out by taking the mean of the opening and closing balances of borrowed funds within that timeframe.

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Disclaimer

Bajaj Finance Limited (“BFL”) is an NBFC offering loans, deposits and third-party wealth management products.

The information contained in this article is for general informational purposes only and does not constitute any financial advice. The content herein has been prepared by BFL on the basis of publicly available information, internal sources and other third-party sources believed to be reliable. However, BFL cannot guarantee the accuracy of such information, assure its completeness, or warrant such information will not be changed. 

This information should not be relied upon as the sole basis for any investment decisions. Hence, User is advised to independently exercise diligence by verifying complete information, including by consulting independent financial experts, if any, and the investor shall be the sole owner of the decision taken, if any, about suitability of the same.