Increasing the discount rate makes it more expensive for banks to borrow money from the Federal Reserve, which ripples outward through the entire economy. Banks pull back on borrowing, the money supply tightens, interest rates on everything from mortgages to business loans climb, and spending slows. It’s one of the Federal Reserve’s core tools for cooling an overheating economy and reining in inflation.
But “discount rate” has a second meaning in finance: the rate used to calculate what future money is worth today. Raising that rate shrinks the present value of any future payment, which directly changes how investors value stocks, bonds, and business projects. Both meanings matter, and they’re connected.
How the Fed’s Discount Rate Works
The Federal Reserve operates what’s called the “discount window,” where banks can borrow money directly from the central bank after pledging collateral. The interest rate on those loans is the discount rate. As of early 2025, the primary credit rate sits at 4.50%. Since March 2020, this rate has been set at the top of the target range the Fed establishes for the broader federal funds rate.
The discount window exists so banks can manage short-term cash needs without being forced into drastic measures, like cutting off credit to customers during periods of market stress. It acts as a safety valve that keeps money flowing to households and businesses even when financial conditions get choppy.
What Happens When the Fed Raises It
When the Fed increases the discount rate, borrowing from the central bank becomes more expensive. Banks respond predictably: they borrow less. If the Fed holds its other reserves steady, this drop in borrowing shrinks the total reserves in the banking system. With fewer reserves, banks have less money to lend, which puts upward pressure on interest rates across the board and slows the growth of the money supply.
This is the basic mechanism of monetary tightening. Banks that need cash must either sell off assets or dip into their own reserves rather than borrowing cheaply from the Fed. That constraint forces them to be more selective about who they lend to, and at what price. The cost of credit rises for everyone downstream.
Effects on Mortgages and Consumer Loans
The connection between the Fed’s rate decisions and what you pay on a mortgage or credit card isn’t instant, but it’s real. When the Fed tightened policy aggressively in response to post-pandemic inflation, mortgage rates climbed from a historic low of 2.65% in January 2021 to a peak of 7.79% by October 2023. For the median-priced home, that translated to a 78% jump in monthly principal and interest payments, reaching $2,891.
The relationship runs in both directions. As markets began anticipating rate cuts, mortgage rates eased to around 6.2% by September 2024, even before any formal policy change. This is because lenders price loans based partly on where they expect rates to go, not just where they are today. Still, the core dynamic holds: higher discount rates push borrowing costs up for consumers, and lower rates bring them down.
The Discount Rate in Investing and Valuation
Outside of central banking, “discount rate” refers to something slightly different but closely related: the percentage used to calculate what a future sum of money is worth right now. This concept drives how investors, analysts, and governments evaluate nearly every financial decision.
The relationship is straightforward and inverse. A higher discount rate means future cash flows are worth less today. The Congressional Budget Office illustrates this clearly: $10 million received 10 years from now has a present value of $7.4 million at a 3% discount rate, but only $5.1 million at a 7% rate. Same future payment, dramatically different value today.
This matters because it changes how much investors are willing to pay for assets. When discount rates rise, the price someone would rationally pay for a stream of future earnings drops. When they fall, valuations expand.
Why Growth Stocks Get Hit Hardest
Rising discount rates don’t affect all investments equally. Growth stocks, companies expected to generate most of their profits far in the future, are significantly more sensitive to rate changes than established, cash-heavy businesses.
The math behind this is intuitive once you see it. A company that pays out most of its value in the near term doesn’t lose much when you discount those payments at a higher rate, because the compounding effect has fewer years to work. But a company whose big payoffs are 10 or 15 years away sees those distant cash flows shrink dramatically under a higher discount rate. One analysis found that dropping the discount rate from 12% to 8% boosted the fair value of a growth stock by 61.8%, compared to just 44.7% for a value stock. The same sensitivity works in reverse: when rates rise, growth stocks fall further.
This explains why high-growth technology stocks tend to sell off sharply during rate-hiking cycles, while dividend-paying utilities and consumer staples hold up better.
How It Changes Business Investment Decisions
Companies use a version of the discount rate called a “hurdle rate” to decide whether a new project is worth pursuing. The rule is simple: only invest in something if its expected return exceeds the hurdle rate. That hurdle rate reflects both the cost of borrowing and the risk of the project itself.
When the broader discount rate environment rises, hurdle rates follow. A factory expansion that looked profitable when capital was cheap might no longer clear the bar when borrowing costs jump by two or three percentage points. Companies become more selective, delay projects, and conserve cash. Multiply this across thousands of firms and you get a measurable slowdown in capital spending, hiring, and economic growth. That’s exactly the outcome the Fed is aiming for when it raises rates to fight inflation: less spending, less demand, less upward pressure on prices.
The Tradeoff: Cooling Inflation vs. Slowing Growth
Raising the discount rate is a deliberate act of economic restraint, and it comes with real costs. Tighter credit means some businesses that would have expanded don’t. Some homebuyers who would have qualified for a mortgage can’t. Job creation slows. If the Fed moves too aggressively, the economy can tip from controlled cooling into outright contraction.
There’s also a timing problem. Research from the University of Chicago’s Becker Friedman Institute has found that changes in the central bank’s short-term rate become less effective when the discount rates that businesses and consumers actually use in their decisions are “sticky,” meaning they don’t adjust as quickly as conventional models assume. In other words, rate hikes don’t always transmit through the economy at the speed policymakers expect, which makes calibrating the right amount of tightening genuinely difficult.
The Fed’s challenge is always the same: raise rates enough to bring inflation under control without triggering a recession. The discount rate is a powerful lever, but pulling it too hard, or not hard enough, carries consequences that take months or years to fully reveal themselves.