"Discount rate" has two distinct but related meanings in economics and policy analysis.
In monetary policy, the discount rate is the interest rate that a central bank charges eligible commercial banks and depository institutions for short-term loans from its lending facility. In the United States, this is the rate set by the Federal Reserve's regional banks (subject to Board of Governors review) for borrowing at the discount window. It is distinct from the federal funds rate, which is the market rate banks charge each other for overnight reserves. The Fed offers primary credit, secondary credit, and seasonal credit, each at different rates. Other central banks operate analogous standing facilities — for example, the European Central Bank's marginal lending facility and the Bank of England's discount window facility.
In financial and cost-benefit analysis, the discount rate is the rate used to translate future cash flows or benefits into a present value, reflecting the time value of money and risk. Governments use social discount rates to evaluate long-term public investments, including climate policy. The choice of rate is contentious: the Stern Review (2006) used a low rate (~1.4%) to justify aggressive climate action, while economists like William Nordhaus have argued for higher market-based rates. The U.S. Office of Management and Budget's Circular A-4 has historically recommended discount rates for federal regulatory analysis, with revisions in 2023 lowering the default real rate.
Key implications for policy researchers:
- A higher discount rate reduces the present value of future costs and benefits, disadvantaging long-horizon policies like climate mitigation, infrastructure, or pension reform.
- A lower discount rate gives more weight to future generations, raising the calculated benefits of preventive action.
- Central bank discount rate changes signal monetary stance and affect bank liquidity, though in practice the discount window is used less than open market operations.
The two meanings share a conceptual root — both involve pricing the use of money over time.
Example
In March 2023, the Federal Reserve raised its primary credit discount rate to 5.00% alongside a federal funds target increase, and lent heavily through the discount window to banks following the collapse of Silicon Valley Bank.
Frequently asked questions
The discount rate is set administratively by the Federal Reserve for direct loans to banks at the discount window; the federal funds rate is the market-determined rate banks charge each other for overnight reserves, targeted by the Fed through open market operations.
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