evaluating central banks' tool kit: past, present, and future/media/others/events/... · model...
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Model Exogenous Policies EndogenousQE Future
Evaluating Central Banks’ Tool Kit: Past, Present, and Future
Eric SimsNotre Dame and NBER
Jing Cynthia WuNotre Dame and NBER
Eric Sims and Cynthia Wu (Notre Dame & NBER) 1/ 32
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Model Exogenous Policies EndogenousQE Future
Monetary Policy
Eric Sims and Cynthia Wu (Notre Dame & NBER) 2/ 32
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Model Exogenous Policies EndogenousQE Future
Eric Sims and Cynthia Wu (Notre Dame & NBER) 3/ 32
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Model Exogenous Policies EndogenousQE Future
Main Takeaways
Simulation: Great Recession
Eric Sims and Cynthia Wu (Notre Dame & NBER) 4 / 32
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Model Exogenous Policies EndogenousQE Future
Main Takeaways
Simulation: Great Recession
10 20 30 40-20
-10
0
10Output
10 20 30 400
0.1
0.2
0.3CB balancesheet
10 20 30 40-2
0
2
Policyrate
4 MPZLB
Eric Sims and Cynthia Wu (Notre Dame & NBER) 4 / 32
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Model Exogenous Policies EndogenousQE Future
Main Takeaways
Simulation: Great Recession
10 20 30 40-20
-10
0
10Output
10 20 30 400
0.1
0.2
0.3CB balancesheet
10 20 30 40-2
0
2
Policyrate
4 MPZLB QE
Eric Sims and Cynthia Wu (Notre Dame & NBER) 4 / 32
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Model Exogenous Policies EndogenousQE Future
Shadow Rate
-4%2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Sources: Board of Governors of the Federal Reserve System and Wu and Xia (2015)
-2%
0%
2%
4%
Wu-Xia Shadow Federal Funds Rate
Effective federal funds rate, end-of-month Wu-Xia shadow rate
6%
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EndogenousQE FutureModel Exogenous Policies
Contributions: Future
Eric Sims and Cynthia Wu (Notre Dame & NBER) 6 / 32
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Model Exogenous Policies EndogenousQE Future
Outline
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Model Exogenous Policies EndogenousQE Future
Model
Medium-scale DSGE model
(a) Households(b) Financial Intermediaries(c) Production(d) Fiscal authority(e) Central Bank: interest-bearing reserves
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FutureModel Exogenous Policies EndogenousQE
Debt Instruments and Market Segmentation
Financial Intermediaries
Households𝑅𝑅𝑅𝑅𝑑𝑑𝑑𝑑(Deposits)
𝑅𝑅𝑅𝑅𝑟𝑟𝑟𝑟𝑟𝑟𝑟𝑟
(Res
erve
s)
Firm
Government
CentralBank
𝑅𝑅𝑅𝑅𝐹𝐹𝐹𝐹(Bonds F)
Four types of debt instruments in our model� Short term: deposits (Rd ) and reserves(Rre )� Long term: private (RF ) and government (RB ) perpetual bonds (Woodford, 2001)
Eric Sims and Cynthia Wu (Notre Dame & NBER) 9 / 32
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Model Exogenous Policies EndogenousQE Future
Monetary Policy
Long rate = expectation + risk premium
Eric Sims and Cynthia Wu (Notre Dame & NBER) 10 / 32
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Model Exogenous Policies EndogenousQE Future
Conventional Policy
Conven tional.,Long rate = expectation +risk premium
Conventional: works on the short rate today
t t − 1ln RTR = ρr ln RTR + Taylor rule + εr,t
Eric Sims and Cynthia Wu (Notre Dame & NBER) 11 / 32
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Model Exogenous Policies EndogenousQE Future
Forward Guidance
FG.,Long rate = expectation +risk premium
FG: works on the expected future shortrate
t t − 1ln RTR = ρr ln RTR + Taylor rule + γεr,t
� ZLBd ret tln R = ln R = max 0, lnR TR
t
J
� Timing assumption:� facilitates comparison with NIRP� mitigates “forward guidance puzzle”
� γ ∈ [0, 1]: credibilityEric Sims and Cynthia Wu (Notre Dame & NBER) 12 / 32
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Model Exogenous Policies EndogenousQE Future
QE
“The problem with QE is it works in practice but it doesn’t work in theory” – Bernanke
Eric Sims and Cynthia Wu (Notre Dame & NBER) 13 / 32
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Model Exogenous Policies EndogenousQE Future
Constraints
Eric Sims and Cynthia Wu (Notre Dame & NBER) 14 / 32
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Model Exogenous Policies EndogenousQE Future
QE
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Model Exogenous Policies EndogenousQE Future
NIRP
Long rate = expectation + risk premiumFG
., .,Bank ing
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Model Exogenous Policies EndogenousQE Future
NIRP
NIRP
Rret = RTR
t
lnRdt = max 0, lnR TR
t
J
FG channel� The same as FG: change future deposit rate
t t − 1ln RTR = ρr ln RTR + Taylor rule + εr,t
� Differently than FG: NIRP involves an observable action R re t
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EndogenousQE FutureModel Exogenous Policies
Banking Channel: Contractionary
Eric Sims and Cynthia Wu (Notre Dame & NBER) 18 / 32
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EndogenousQE FutureModel Exogenous Policies
Conventional Monetary Policy
0 5 10 15 20-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6Output
0 5 10 15 20-0.2
0
0.2
0.4
0.6
0.8
1Inflation
MP
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EndogenousQE FutureModel Exogenous Policies
Unconventional Monetary Policy
0 5 10 15 20-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6Output
0 5 10 15 20-0.2
0
0.2
0.4
0.6
0.8
1Inflation
MPQENIRPFG
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Model Exogenous Policies EndogenousQE Future
Shock Sizes
0 5 10 15 20-2.5
-2
-1.5
-1
-0.5
0
0.5TR rate
0 5 10 15 20-0.01
0
0.01
0.02
0.03
0.04
0.05CB Balance sheet
MPQENIRPFG
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Model Exogenous Policies EndogenousQE Future
Yield Curve
20
-0.6
0 5 10 15
-0.4
-0.2
0
Depositrate
0 5 10 15 20-1
-0.5
0
Real longyield
-0.40 5 10 15 20
-0.3
-0.2
-0.1
0Nominal longyield
0 5 10 15 20-0.5
0
0.5
Spread
MPQENIRPFG
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Model Exogenous Policies EndogenousQE Future
Summary
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Model Exogenous Policies EndogenousQE Future
Endogenous QE
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Model Exogenous Policies EndogenousQE Future
Liquidity Shock
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Model Exogenous Policies EndogenousQE Future
Liquidity Shock
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Model Exogenous Policies EndogenousQE Future
Liquidity Shock
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Model Exogenous Policies EndogenousQE Future
Productivity Shock
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EndogenousQE FutureModel Exogenous Policies
Government Spending Shock
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Model Exogenous Policies EndogenousQE Future
Great Recession
10 20 30 40-20
-10
0
10Output
10 20 30 400
0.1
0.2
0.3CB balance sheet
10 20 30 40-2
0
2
4
Policy rateMPZLBQE
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Model Exogenous Policies EndogenousQE Future
Simulation
-10 -5 0normal
-14
-12
-10
-4
-2
0ZL
B/Q
E
Mean
0 2 8 10 124 6normal
0
2
4
-66
-8
8
10
12
ZLB/
QE
Std
1000 draws
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EndogenousQE FutureModel Exogenous Policies
Quantitative Tightening
Benchmark
5 10 15 20 25 30
-10
-6
-4
-2
0Output
5 10 15 20 25 30-5
-8-4
-3
-2
-1
0Inflation
5 10 15 20 25 30
0
0.05
0.1
0.15CBBalance sheet
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EndogenousQE FutureModel Exogenous Policies
Quantitative Tightening
Immediate selloff after the ZLB
5 10 15 20 25 30
-10
-6
-4
-2
0Output
5 10 15 20 25 30-5
-8-4
-3
-2
-1
0Inflation
5 10 15 20 25 30
0
0.05
0.1
0.15CBBalance sheet
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EndogenousQE FutureModel Exogenous Policies
Quantitative Tightening
Carry large balance sheet forward
5 10 15 20 25 30
-10
-6
-4
-2
0Output
5 10 15 20 25 30-5
-8-4
-3
-2
-1
0Inflation
5 10 15 20 25 30
0
0.05
0.1
0.15CB Balancesheet
QT has an important impact for the economy during the ZLB.
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EndogenousQE FutureModel Exogenous Policies
NIRP and the Balance Sheet
0 5 10 15 20-0.05
0
0.05
0.1
0.15
0.2
0.25Output
0 5 10 15 20-1
-0.8
-0.6
-0.4
-0.2
0
0.2TRrate
NIRP:pre-QENIRP:QE3NIRP:Euro
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Model Exogenous Policies EndogenousQE Future
ELB on Policy Rate
What is the lowest policy rate that the constraint FIs don’t want to voluntarily shut down?
0 1 2 3 4 5 6 7 8 9Reserves/Output
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1
ELB
We provide a useful first benchmark to endogenize ELB
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Model Exogenous Policies EndogenousQE Future
Conclusion
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