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Making Monetary Policy: Rules,
Benchmarks, Guidelines, and Discretion
Eric S. Rosengren
President & CEO
Federal Reserve Bank of Boston
October 13, 2017
Federal Reserve Bank of Boston’s 61st Economic Conference
“Are Rules Made to be Broken? Discretion and Monetary Policy”
Boston, Massachusetts

bostonfed.org

Should We Have Rules-Based Monetary
Policy?
▶ Legislation is being considered that has
policymakers adhere to predetermined rule
▶ “Taylor Rule” – leading example of rules
▶ Legislation closely follows Taylor (1993)

▶ Alternative is to focus on outcomes
▶ Maximum employment and stable prices
▶ Allow policymakers discretion in determining how best
to achieve the mandate

2

Benefits of Policy Rules
▶ Rules can capture the response of policy to various
conditions over a historical period, providing a
benchmark
▶ Rules can make inherently complex policies more
understandable and transparent to the public

▶ Greater transparency can make it easier to
communicate the current and prospective stance of
monetary policy
▶ Provide consistency through time, even as the
membership of the policymaking committee
changes
3

Drawbacks – A Historical Example
▶ Boston Fed President Frank Morris, 35 years ago,
a leader in the rules versus discretion debate
▶ Many economists were arguing for rules tied to simple
money aggregates
▶ Frank argued financial innovation had degraded the
information content of money aggregates, so simple
money-based rules would be poor guides for monetary
policy

▶ With the benefit of hindsight, I think it is clear that
Frank Morris was right – money aggregates largely
disappeared from policy debates
4

Potential Issues with Rules
▶ No simple policy rule has been widely adopted to
direct policy at central banks around the world
▶ Picking the wrong rule can entail significant costs:
an ineffective or inappropriate rule could produce
distinctly sub-optimal results for the economy
▶ Costly to a central bank’s reputation and
communication efforts if the rule has to be
abandoned

5

Current Rules Have Significant
Advantages Over Money Aggregates
▶ They are firmly tied to the ultimate goals that
Congress has set for the Federal Reserve
▶ A policy rule that guides actions (interest rate
decisions) to reduce misses in the mandate
(deviations of inflation and employment from their
targets) makes intuitive sense
▶ I will show why benchmarking with policy rules is
essential – and why legislating the use of simple
policy rules would be counterproductive

6

Figure 1: Inflation Rate: Change in Personal
Consumption Expenditures (PCE) Price Index
January 1970 - August 2017
12

Percent Change from Year Earlier

9

6
3
0
-3
Jan-1970

Jan-1980

Jan-1990

Jan-2000

Jan-2010

Recession

Source: BEA, NBER, Haver Analytics

7

Figure 2: Civilian Unemployment Rate and the
Natural Rate of Unemployment
1970:Q1 - 2017:Q3
12

Percent

9

6

3

Civilian Unemployment Rate
Natural Rate of Unemployment
0
1970:Q1

1980:Q1

1990:Q1

2000:Q1

2010:Q1

Recession

Source: BLS, CBO, NBER, Haver Analytics

8

Figure 3: Specifications of Policy Rules for
the Federal Funds Rate
December 8, 2011

Note: it is the federal funds rate for quarter t, yt - yt* is the output gap estimate for the current period, 𝜋t is the trailing four-quarter core
PCE inflation for quarter t, and 𝜋t*, policymakers’ long-run inflation objective, is assumed to be 2%. The symbol ∆ 4 refers to the change
over 4 quarters, and 𝜋t+2|t refers to inflation expectations formed at time t for two quarters ahead.
Source: FOMC, Tealbook B, December 8, 2011

9

Rules Do Provide an Important Benchmark
▶ FOMC participants do indeed regularly refer to
policy rules – previous table shows they have been
used regularly in briefing documents
▶ Help reinforce dual mandate –
▶ Reinforce the expectations of firms and households that
inflation is likely to be 2 percent
▶ Reinforce commitment to full employment

10

Figure 4: Near-Term Prescriptions of Policy
Rules for the Federal Funds Rate
December 8, 2011
Taylor (1993) rule

2012Q1
0.90

2012Q2
0.59

Taylor (1999) rule

-1.82

-2.15

Estimated outcome-based rule

-0.11

-0.42

Estimated forecast-based rule

-0.27

-0.61

First-difference rule

-0.02

-0.14

MEMO
Staff assumption
Fed funds futures
Median expectation of primary dealers
Blue Chip forecast (December 1, 2011)
Source: FOMC, Tealbook B, December 8, 2011

2012Q1
0.08
0.10
0.13
0.10

2012Q2
0.10
0.13
0.13
0.10

11

Figure 5: Federal Reserve System Assets
January 1990 - September 2017
5

Trillions of Dollars

4
3
2
1
0
Jan-1990

Jan-2000

Jan-2010

Recession

Source: Federal Reserve Board, NBER, Haver Analytics

12

Figure 6: Federal Reserve System Balance
Sheet Composition
January 1990 - September 2017
5

Trillions of Dollars
Other Assets

4

Mortgage-Backed
Securities Maturing in
More Than 10 Years
Treasury Securities
Maturing in More Than
10 Years
Treasury Securities
Maturing in 5 to 10
Years
Treasury Securities
Maturing in 1 to 5
Years
Treasury Securities
Maturing in 1 Year or
Less

3
2

1
0
Jan-1990

Jan-2000

Jan-2010

Source: Federal Reserve Board, NBER, Haver Analytics

13

Figure 7: Estimates of the Equilibrium Real
Interest Rate
January 2012 - September 2017
3

Percent

2

1

Central Tendency
SEP Median Longer-Run Real Federal Funds Target Rate

0
Jan-2012

Dec-2012

Dec-2013

Dec-2014

Dec-2015

Dec-2016

Date of Forecast
Note: The equilibrium real interest rate is calculated as the SEP median longer-run federal funds rate forecast less an
inflation rate of 2%. The central tendency excludes the three highest and three lowest observations.
Source: FOMC, Summary of Economic Projections (SEP)

14

Figure 8: Estimates of the Natural Rate of Unemployment:
SEP Forecasts of the Longer-Run Unemployment Rate
January 2009 - September 2017
6.5

Percent

5.5

4.5
Central Tendency
SEP Median Longer-Run Unemployment Rate

3.5
Jan-2009

Jan-2011

Dec-2012
Dec-2014
Date of Forecast

Dec-2016

Note: Prior to the June 2015 median, SEP median unemployment rates are publicly available only with a five-year lag. Proxies for the
medians for 2012 - March 2015 are calculated from the distribution of participants’ projections reported in ranges of tenths in the
meeting minutes. The central tendency excludes the three highest and three lowest observations.
Source: FOMC, Summary of Economic Projections (SEP)

15

Figure 9: Taylor Rule Prescriptions for
the Federal Funds Rate
January 2012 - August 2017
6

Percent
R*=2.25% and NAIRU=5.45% - Jan 2012 SEP
R*=0.75% and NAIRU=4.6% - Sept 2017 SEP

4

2

0

-2
Jan-2012

Jan-2014

Jan-2016

Note: To specify the rule in terms of the Fed’s dual mandate, which is stated in terms of employment rather than output, the output gap
has been replaced by the gap between the longer-run and actual rates of unemployment, using Okun’s Law. The calculation uses the
PCE inflation rate.
Source: FOMC, Summary of Economic Projections (SEP); Taylor Rule (1993)

16

Challenges with Policy Rules
▶ Simple interest rate rules do not capture the full range of policy
instruments available to the central bank
▶ Parameters often specified as constants in simple policy rules
have proven to be quite variable
▶ Estimates of full employment and the equilibrium real interest
rate have changed significantly over a short period of time
▶ Given the changing views of economic relationships as we get
more information about how the economy is actually responding,
there would be many deviations from the rule and many complex
explanations required

▶ Not incorporating financial stability and tail risks will not fully
capture how policymakers react in real time
▶ Significant omission during recessions and financial crises

17

Figure 10: Errors in the Estimated Taylor Rule
and Periods of Instability
February 11, 1987 - December 15, 2008
1
Black
Monday

0.75

Bank of
New England
Fails

Asian
Crisis

Russian
Crisis/
LTCM

Argentine
Debt
Default

Bear
Stearns
Fails

Lehman
Fails

0.5

0.25

0

-0.25

-0.5

-0.75

-1

-1.25
1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008

Recession

Residual (Actual-Fitted): FFR=C+B1*FFR(-1)+B2*URF4 +B3*PFA

Source: Peek, Rosengren and Tootell. (2016) “Does Fed Policy Reveal a Ternary Mandate?” Federal Reserve Bank of Boston Working
Paper 16-11

18

Concluding Observations
▶ Simple policy rules are useful, not least in capturing how
monetary policy has reacted historically
▶ This makes these rules very useful benchmarks providing
useful guidance
▶ A legislated policy rule that is rigid could lead to large policy
mistakes
▶ Key inputs to policy rules that can change over time are
estimated with substantial error

19

Concluding Observations (Continued)
▶ Policy effectiveness is better served by a more
robust formulation of monetary policy that draws on
a diverse set of guidelines and benchmarks –
which is the exercise Fed policymakers conduct
every six weeks for actual FOMC meetings

20