posted on 06 February 2017
from the Congressional Budget Office
As slack (that is, unused productive resources) in the economy keeps diminishing, the Federal Reserve will continue to reduce its support of economic growth, in CBO’s view. As a result, CBO expects the federal funds rate - the interest rate that financial institutions charge each other for overnight loans of their monetary reserves - to rise gradually over the next few years, reaching 1.1 percent in the fourth quarter of 2017 and 2.8 percent by the end of 2020 (see the figure below).
CBO projects that interest rates on federal borrowing will also rise gradually over the next few years. The interest rate on 3-month Treasury bills is projected to rise from 0.4 percent in the fourth quarter of 2016 to 2.5 percent by the end of 2020. Over the same period, the interest rate on 10-year Treasury notes is projected to rise from its average of 2.1 percent in the fourth quarter of 2016 to 3.2 percent in 2020.
The projected increase in the 10-year rate reflects the anticipated increase in the 3-month rate and an expected increase in the term premium - the premium paid to bondholders for the extra risk associated with holding longer-term bonds. The projected rise in both long-term and short-term rates is consistent with CBO’s projection that economic output will grow somewhat faster than potential (that is, maximum sustainable) output for the next two years. Although financial-market participants may currently expect changes in policies that lead to faster output growth, CBO’s projection is based on current law. As such, the forecast reflects the assumption that market participants ultimately adjust their expectations.
In addition, various factors - such as investors’ heightened concern about relatively weak global economic growth - that pushed the term premium to historically low levels in recent years are expected to dissipate. The term premium rose after the recent elections, but it remains low. CBO projects that it will continue to rise over the next several years. Still, because the factors that pushed up the term premium are expected to dissipate slowly, CBO expects that the interest rate on 10-year notes will rise more slowly and stabilize slightly later than will the rate on 3-month bills.
Interest Rates for 2021 to 2027
CBO projects that the interest rates on 3-month Treasury bills and 10-year Treasury notes will average 2.8 percent and 3.6 percent, respectively, during the 2021 - 2027 period. The federal funds rate is projected to average 3.1 percent. The projected real interest rate on 10-year Treasury notes - that is, the rate after the effect of expected inflation, as measured by the consumer price index for all urban consumers (CPI-U), is removed - averages 1.2 percent between 2021 and 2027. That rate would be well above the current real rate but more than a percentage point below the average real rate between 1990 and 2007. (The 1990 - 2007 period allows useful comparisons because it featured fairly stable expectations of inflation and no severe economic downturns or financial crises.)
According to CBO’s analysis, average real interest rates on Treasury securities will be lower than they used to be for several reasons. CBO expects slower growth of the labor force and slightly slower growth of productivity, both of which will reduce the rate of return on capital. Furthermore, a greater share of total income is expected to go to high-income households, which will increase private saving and make more funds available for borrowing. CBO also expects the demand for Treasury securities relative to the demand for risky assets to be higher than its 1990 - 2007 average. That relatively higher demand for Treasury securities implies higher prices and therefore lower interest rates. And net inflows of capital from other countries, measured as a percentage of gross domestic product (GDP), are also expected to be greater, again making more funds available for borrowing.
CBO expects the term premium to be smaller from 2021 to 2027, on average, than it was before the late 1990s. Over the past two decades, the prices of long-term Treasury securities and of risky assets in the United States have moved in opposite directions. In other words, periods with weaker economic growth and lower returns in the stock market have been associated with increases in the prices of Treasury securities, which was not the case before the late 1990s. As a result, investors trying to protect themselves from adverse economic surprises may be purchasing more long-term Treasury securities than they used to. A related factor is that investors may have increased their demand for financial assets, such as long-term Treasury securities, that can protect them from unexpectedly low inflation. Altogether, that greater demand for long-term Treasury securities will result in a term premium and long-term interest rates that are lower than they were before the late 1990s, CBO anticipates.
Other factors are projected to push real interest rates up from their earlier average, but not by enough to offset the factors pushing rates down. Federal debt is projected to be higher as a percentage of GDP, increasing the supply of Treasury securities. The country’s ratio of older people, who will be drawing down their savings, to younger workers in their prime saving years will be higher than it was before; that will decrease saving, thereby making fewer funds available for borrowing. And a larger share of income will come from capital, increasing returns on capital assets with which Treasury securities compete.
In addition to considering those factors, CBO relies on information from financial markets when it projects interest rates over the long term, and incorporating that information has tended to reduce the agency’s projections. The current interest rate on long-term Treasury securities is determined in large part by investors’ expectations of interest rates on shorter-term securities several years into the future. Current prices in financial markets indicate that investors expect short-term interest rates to rise only gradually and to remain low, possibly because they expect certain forces putting downward pressure on interest rates in the United States to persist over the next decade. One force is weakness in global financial and monetary conditions, which has resulted in a flight to low-risk securities and currencies, especially U.S. Treasury securities. A second force is low interest rates on foreign assets, which push down rates on U.S. assets that can be substituted for them.
About the Author
Edward Gamber is an analyst in CBO’s Macroeconomic Analysis Division.
Editors Note: Last week, CBO’s Director testified before the Senate Budget Committee about the agency’s projections for the federal budget and the U.S. economy over the next 10 years, which were recently published in The Budget and Economic Outlook: 2017 to 2027. Among those projections are CBO’s assessments of interest rates, which are expected to rise gradually over the next few years before settling at levels that are below average values observed in previous decades.
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