What are Risk-Weighted Assets?
Risk-weighted assets is a banking term that refers to the minimum capital that banks should keep as a reserve to reduce the risk of insolvency. Banks face the risk of loan borrowers defaulting or investments flatlining, and maintaining the minimum amount of capital helps cover the risks.
The different classes of assets held by banks carry different risk weights, and adjusting the assets by their level of risk allows banks to discount lower-risk assets. For example, assets such as debentures carry a higher risk weight than government bonds, which are considered low-risk and assigned a 0% risk weighting.
Understanding Risk-Weighted Assets
When calculating the risk-weighted assets of a bank, the assets are first categorized into different classes based on the level of risk and the potential of incurring a loss. The banks’ loan portfolio, along with other assets such as cash and investments, is measured to determine their riskiness. The method is preferred by the Basel Committee because it includes off-balance sheet risks. It also makes it easy to compare banks from different countries around the world.
Riskier assets such as unsecured loans carry a higher risk of default and are assigned a higher risk weight than other assets such as cash and Treasury bills. The higher the amount of risk an asset possesses, the higher the capital adequacy ratio and the capital requirements. On the other hand, Treasury bills are secured by the ability of the national government to generate revenues and are subject to fewer capital requirements than unsecured loans.
Setting Rules for Risk Weighting
The Basel Committee on Banking Supervision (BCBS) is the global banking regulator that sets the rules for risk weighting. The first step in banking regulation started with the publication of the Basel I framework, which set the capital requirements for banks. It was followed by the Second Basel Accord of 2004 that amended the banking regulations on the amount of capital banks should maintain against their risk exposure. Basel II recommended that banks should hold adequate capital that is at least 8% of the risk-weighted assets.
The financial crisis of 2007/08 exposed the inefficiencies that existed in the banking industry, which led to the collapse of large US banks. The main cause of the crisis was investments in sub-prime home mortgage loans that carried a higher risk of default than bank managers expected.
Following the global financial crisis, the BCBS introduced the Basel III framework, which aimed to strengthen the capital requirements of banks. It also established new requirements for funding stability and liquid assets. Basel III requires banks to group their assets by risk category so that the minimum capital requirements are matched with the risk level of each asset. The framework is scheduled to take effect on January 1, 2022.
How to Assess Asset Risk
When determining the risk attached to a specific asset held by a bank, regulators consider several factors. For example, when the asset being assessed is a commercial loan, the regulator will determine the loan repayment consistency and the collateral used as security for the loan.
On the other hand, when assessing a loan used to finance the construction of coastal condominiums, the assessor will consider the potential revenues from the sale (or rental) of the condos and if they are enough to repay the principal and interest payments. If the condos serve as collateral, the assessors will consider the value of the property and if it is enough to repay the loan if the debtor defaults.
If the asset being considered is a Treasury bill, the assessment will be different from a commercial loan since a treasury bill is backed by the government’s ability to continually generate revenues. The federal government has higher financial credibility, which translates to low risk to the bank. The regulator will require banks holding commercial loans on their balance sheet to maintain a higher capital, whereas banks with treasury bills and other low-risk investments will be required to maintain far less capital.
Capital Requirements for Risk-Weighted Assets
Capital requirements refer to the minimum capital that banks are required to hold depending on the level of risk of the assets they hold. The minimum capital requirements set by regulatory agencies such as the Federal Reserve and the Bank for International Settlements (BIS) ensure that banks hold enough capital that is proportionate to the level of risk of the assets they hold. The capital acts a cushion of cash when the bank incurs high operational losses in the course of the operations.
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