Central banks going long
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1 Central banks going long Ricardo Reis LSE November 2017 Central Bank of Chile 1
2 Role of long interest rates: targets Yellen (2017) For this reason, the Committee turned to asset purchases to help make up for the shortfall by putting additional downward pressure on longer-term interest rates. 2
3 Role of long interest rates: goals Federal Reserve Act of 1913:... to promote effectively the goals of maximum employment, stable prices, and moderate long-term interest rates. 3
4 Role of long interest rates: tools Central banks issue reserves and make loans. Choose maturity of these. Control the interest rate at that maturity. Overnight, but 30 days, 90 days, Select to compare dates NOMINAL REAL* 4
5 This paper 1. Three historical episodes where long-term interest rates were central to monetary policy: United States, United Kingdom Japan, Recast the problem of inflation determination in continuous time using diffusions for uncertainty, and integrate with models of yield curve. 5
6 Continuous-time inflation 6
7 Real economy Representative agent solves: ( ) max E 0 β t c 1 γ t {{c t,j },l t} 1 γ l1+ψ t dt 1 + ψ 0 ( 1 c t = c 0 d(b t + v t ) = µ µ 1 t,j ) µ 1 µ dj, ( i t dp t p t ) v t + r t b t + (w t l t + z t c t )dt. Continuum of monopolistic firms operate a technology y t,j = a t l t,j. Market clearing: l t = l t,j dj, c t,j = y t,j, b t = v t = 0. 7
8 Equilibrium Output (and marginal utility m t = βy γ t ): Classical dichotomy: y γ+ψ t = µa 1+γ t dy t y t = g t d t + σ y dz y t g t = κ g (g t ḡ)dt + σ g dz g t Lemma In the real equilibrium, the real interest rate follows: dr t = κ y (r t r)d t + γσ g dz g t where r = γḡ ln β 0.5γ(γ + 1)σ 2 y. 8
9 The central bank Take on deposits (reserves) of maturity s, promise: I (s) E t ( ) m t+s I (s) t = m t p t+s p t E t t : ( ) d(mt /p t ) = i t dt (m t /p t ) Independent central bank. Hall-Reis theorem applies. Feedback rule: ( dpt d(i t x t ) = ρ(i t x t )dt + φ p t ) π dt where x t follows a Markov process with long-run mean x. 9
10 The equilibrium Definition A bounded homoskedastic Markov equilibrium is a function for expected inflation π(r, x) : R 2 R and three constants, α y, α g, α r such that: dp t p t = π(r t, x t )dt + α y σ y dz y t + α gσ g dz g t + α rσ r dz r t, given the path for dm t and dr t, the Euler equation for di t and so that expected inflation satisfies: ( ) lim E t e ɛ(t t) π(r T, x T ) = 0 T for any ɛ > 0. 10
11 Equilibrium expected inflation Can write an ODE for expected inflation E t (d( π t + ε t π )) + (ρ φ) E t ( π t + ε t π )dt = φ E t (ε t )dt As long as φ > ρ ( ) ρ π t = π + ε t + φ ρ 0 φe (φ ρ)s E t (ε t+s ε t )ds Taylor principle: make expected inflation explosive 11
12 Inflation and its target Deviations of inflation from target: ε t = (r t + π α α γσ 2 yα y ) x t If ε t = 0 at all dates, then inflation will always be on target. Need omniscient, long-lived, and inflation-nutter central bank. Opposite case, x t follows an exogenous process: dx t = κ x (x t x)d t + σ x dz x t 12
13 Expected inflation ( ρ π(r t, x t ) = π + + ) ( r + π α α γσ 2 φ ρ yα y x ) ) ( ρ κx (r t r) κ x + φ ρ ( ρ κg κ g + φ ρ ) (x t x). 1. First line: intercept. Need average real interest rate and inflation risk premia. 2. Second line: sensitivity to state of economy and to policy. 13
14 Sensitivity of inflation to shocks 1 α x = κ x + φ ρ γ α r = κ g + φ ρ α y = 0 Higher nominal rates lower inflation. Shocks to output level that do not move real interest rates have no effect on inflation. Similarly, no sunspot nominal shocks and homoskedastic. 14
15 Equilibrium interest rates Lemma Define the yield on the bond as i (s) t i (s) t = log(i (s) t )/s. It is: = δ 0 (s) + δ i (s)i t + δ x (s)x t where δ i (s) = (1 e κgs )(κ g + φ ρ)/(κ g φ). Satisfy arbitrage relation or infinite/zero reserves. For large maturities, s is large, so δ i (s) small. Lumpy and infrequent policy decisions on long rate will lead to intense speculation on short rates. Affine class, easy to include time-varying risk premium (uncertainty and news shocks), connect to data, or include effect of QE on long rates. 15
16 The United States pre accord:
17 Fed after the Great Depression Goal of monetary policy in war: answer to Treasury, keep bond prices low. April 1942 announcement of policy regime: Fed stood ready to buy and sell 90-day Treasury bills at a fixed rate of 3/8%. Raised T-bill rate against inflation. July of 1947; by end of 1948: 1 and 1/8%. 17
18 : The Fed versus the Treasury Korean War and higher r t. As long as the Federal Reserve is required to buy government securities at the will of the market for the purpose of defending a fixed pattern of interest rates established by the Treasury, it must stand ready to create new bank reserves in unlimited amount. This policy makes the entire banking system, through the action of the Federal Reserve System, an engine of inflation. (U.S. Congress 1951, p. 158). Treasury-Fed accord of March 4, 1951: Few episodes in American monetary history have attracted so much attention in the halls of Congress and in academic quarters, alike. Friedman and Schwartz. 18
19 Fed going long 1942 regime: explicitly announced ceiling of 2.5% for the 10-year yield : not binding : yield reached 2.37% in November 1947, December 2.45%, Fed s portfolio maturity increased. Still, October 16, 1947: We can assure you that these actions will not affect the maintenance of the 2 1/2 percent rate for the outstanding long-term government bonds. Korean War: pressure, yield curve flatter, Truman worried about mortgage rates. Fed only abandons ceiling in 1953, after which bills only. 19
20 A hard peg The modified Fisher equation with φ = 0 and constant x t : π t = x r t + α α + γσ 2 yα y Nominal rate (i) Fisher equation x Policy rule r-α'α-γσ 2 α y π* Inflation (π) 20
21 Feedback rule Hard peg only lasted for 5 years: maybe just small ρ and φ. Nominal rate (i) Policy rule Fisher equation r+π*-α'α-γσ 2 α y π* Inflation (π) 21
22 Feedback rule Ceiling i (s) t ι. Follow feedback rule unless violate ceiling, then interest rate unchanged. Nominal rate (i) Fisher equation ι H Policy rule L r-α'α-γσ 2 α y π* Inflation (π) 22
23 Model and history Until 1950, around L, move x slightly. Nominal rate (i) Fisher equation ι H Policy rule L r-α'α-γσ 2 α y π* Inflation (π) 23
24 Model and history Korea war, r t rises, M equilibrium. Nominal rate (i) Fisher equation ι H Policy rule M r'-α'α-γσ 2 α y L π* Inflation (π) 24
25 Model and history Raise rates, drop peg, back to L, but fear of escapes. Nominal rate (i) Fisher equation ι H Policy rule r'+... L π* Inflation (π) 25
26 The Radcliffe commission and UK monetary policy in the 1960s 26
27 Radcliffe report, August 1959 to inquire into Britain s monetary and credit mechanism and to make recommendations. Committee on the Working of the Monetary System REPORT Presented to Parliament by the Chancellor of the Exchequer by Command of Her Majesty August 1959 LONDON HER MAJESTY'S STATIONERY OFFICE qnd. 827 Reprinted 1964 PRICE 1 Os. Od. NET 27
28 UK monetary policy in 1950s Policy goal: lower unemployment. Policy tool: fiscal policy and AD management. Role of monetary policy: manage international reserves via bank rate. Criticized for neglecting cheap money and investment. Ceiling on 10-year rate of 2.5%, by refusing to sell bonds at lower price. Increase in bank rate come with maturity of public debt falling, criticised. Intellectual debate on role of monetary policy: liquidity not money, credit policies, interest rates. 28
29 The Radcliffe report s view 1. Monetary policy has many goals. 2. Use international reserves to dampen exchange rate volatility. 3. Money does not matter, liquidity. 4. Monetary policy should actively work through credit controls must have and must consciously exercise a positive policy about interest rates, long as well as short, and about the relationship between them. Setting interest rates, let markets determine maturities. Interest rates have little effect on AD or on money. 29
30 The Bank of England going long Short rate to stabilize exchange rate. Estimate the right level for long interest rates and use issuance of bonds of different maturities, credit controls, bank regulation, bank rate to achieve steady demand for government bonds. Policy: peg i (s) t around an exogenous ι t. Similar to analysis of indeterminacy. Alternative: d(i (s) t ι t ) = ρ(i (s) t ι t )dt + φ ι ( dpt p t ) π dt with a small φ ι and a large extent of smoothing ρ. 30
31 Result Lemma The policy rule for long-term interest rates in equation leads to inflation dynamics as in the proposition with φ = φ ι δ i (s) and x t = ι t δ 0 (s) δ i (s) + δ x (s) If s small, δ 0 (s) and δ x (s) are close to zero, δ i (s) is close to 1, so result from phase diagrams approximately apply. Going long, large s, small δ i (s) 31
32 Difficulties with going long 1. φ ι > δ i (s)ρ for determinacy. Less stringent condition, Taylor principle far from applying. 2. Precise target of x, requires target for ῑ to target x = ῑ δ 0 δ i +δ x. 3. Keeping ε t close to zero hard, too low ι t from debt management conflicts, exogenous shocks large if δ i (s) + δ x (s) < 1. 32
33 The UK in the 1960s UK struggled, interest rates crept up, inflation rose 10 Inflation Treasury bill 10-year bond yield
34 The Bank of Japan s yield curve control,
35 Core CPI 25 (y/y chg., %) FY Source: Ministry of Internal Affairs and Communications, "Consumer Price Index." Shigenori SHIRATSUKA (BOJ) Evolution of Unconventional Conference on May 29,
36 Nominal Interest Rates ( % ) O/N call rate JGB 10-year Sources: Bloomberg; Bank of Japan. Source: Shiratsuka, Shigenori SHIRATSUKA (BOJ) Evolution of Unconventional Conference on May 29,
37 BOJ s Balance Sheet (tril. yen) Assets Others LLR lending, Credit facilities & equities Bills sold Currency in circulation Liabilities and net assets Short-term fund-supplying operations TBs Other liabilities & net assets ETFs, RIETs, & etc. JGBs Reserves Source: Bank of Japan, Monetary Base and the Bank of Japan's Transactions. Source: Shiratsuka, Shigenori SHIRATSUKA (BOJ) Evolution of Unconventional Conference on May 29,
38 Yield Curve Control ( % ) Jul 27, 2016 (bottom) Sep 20, 2016 (One day before introduction of QQE w/ YCC) Sep 28, 2016 (Bottom under QQE w/ YCC) Feb 2, 2017 (Peak under QQE w/ YCC) May 15, 2017 (Latest) Policy rate 0.1% (maturity) Source: Bloomberg. Shigenori Source: SHIRATSUKA Shiratsuka, (BOJ) Evolution of Unconventional Conference on May 29, year JGB yeild Around 0% 40 38
39 The Bank of Japan going long Precise targets for two interest rates, not ceilings. Target slope of the yield curve: d(i (s) t i t ι t ) = ρ(i (s) t i t ι t ) + φ ι ( dpt p t ) π dt Lemma The policy rule for the slope of the yield curve in equation leads to inflation dynamics as in proposition with φ = φ ι /(δ i (s) 1) and x t = ι t δ 0 (s) δ i (s) + δ x (s) 1. 39
40 Theory predictions 1. Now φ > ρ requires: φ ι < The BoJ should commit to increasing its 10-year yield target by less than its overnight interest rate when inflation increases. Stimulating inflation requires steepening the yield curve. 3. Opposite of BoJ policy. Stimulative monetary policy is low short rates, and high long rates. 40
41 Performance so far 41
42 Conclusion 42
43 Conclusion Past decade, central banks went long by talking about long-term interest rates a lot more to evaluate and guide their policies. Historical case studies. Each used long-term interest rate differently. None very successful. Methodologically: link monetary policy and inflation analysis to yield curve models by having shocks follow continuous-time diffusions. 43
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