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Inflation Dynamics and Monetary Policy in India: A New Keynesian Phillips Curve Perspective

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  • Bhavesh Salunkhe
  • Anuradha Patnaik

Abstract

The present study estimates various specifications of the New Keynesian Phillips Curve (NKPC) models for India over 1996Q2 to 2017Q2 using Consumer Price Index (CPI) and Wholesale Price Index (WPI) inflation, separately. The empirical results suggest that the data support all the specifications of the Phillips curve models based on both the CPI and WPI inflations. However, the backward looking and hybrid models provide robust results for both the inflation indices. While the forward-looking behaviour dominates the CPI inflation trajectory, the backward-looking behaviour greatly influences the trajectory of WPI inflation. Also, a small-to-moderate degree of persistence is evident in both the CPI and WPI inflation. The output gap, which mainly represents the demand side pressures, turns up the major force determining both the CPI and WPI inflations. Besides the output gap, real effective exchange rate (reer), international crude oil price inflation, global non-fuel commodity price inflation and rainfall have a modest impact on the CPI and WPI inflations. JEL Classification: E12, E52, C36, C14

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  • Bhavesh Salunkhe & Anuradha Patnaik, 2019. "Inflation Dynamics and Monetary Policy in India: A New Keynesian Phillips Curve Perspective," South Asian Journal of Macroeconomics and Public Finance, , vol. 8(2), pages 144-179, December.
  • Handle: RePEc:sae:smppub:v:8:y:2019:i:2:p:144-179
    DOI: 10.1177/2277978719861186
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    1. Hansen, Lars Peter, 1982. "Large Sample Properties of Generalized Method of Moments Estimators," Econometrica, Econometric Society, vol. 50(4), pages 1029-1054, July.
    2. Fuhrer, Jeffrey C, 1997. "The (Un)Importance of Forward-Looking Behavior in Price Specifications," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 29(3), pages 338-350, August.
    3. Rudd, Jeremy & Whelan, Karl, 2005. "New tests of the new-Keynesian Phillips curve," Journal of Monetary Economics, Elsevier, vol. 52(6), pages 1167-1181, September.
    4. Glenn D. Rudebusch, 2002. "Assessing Nominal Income Rules for Monetary Policy with Model and Data Uncertainty," Economic Journal, Royal Economic Society, vol. 112(479), pages 402-432, April.
    5. Robert King & Alexander L. Wolman, 1999. "What Should the Monetary Authority Do When Prices Are Sticky?," NBER Chapters, in: Monetary Policy Rules, pages 349-404, National Bureau of Economic Research, Inc.
    6. Jeff Fuhrer & George Moore, 1995. "Inflation Persistence," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 110(1), pages 127-159.
    7. Marvin Goodfriend & Robert G. King, 1997. "The New Neoclassical Synthesis and the Role of Monetary Policy," NBER Chapters, in: NBER Macroeconomics Annual 1997, Volume 12, pages 231-296, National Bureau of Economic Research, Inc.
    8. N. Gregory Mankiw & Ricardo Reis, 2002. "Sticky Information versus Sticky Prices: A Proposal to Replace the New Keynesian Phillips Curve," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 117(4), pages 1295-1328.
    9. Mark Gertler & Jordi Gali & Richard Clarida, 1999. "The Science of Monetary Policy: A New Keynesian Perspective," Journal of Economic Literature, American Economic Association, vol. 37(4), pages 1661-1707, December.
    10. Ben S. Bernanke & Julio J. Rotemberg (ed.), 1997. "NBER Macroeconomics Annual 1997," MIT Press Books, The MIT Press, edition 1, volume 1, number 026252242x, April.
    11. Richard H. Clarida & Mark Gertler, 1997. "How the Bundesbank Conducts Monetary Policy," NBER Chapters, in: Reducing Inflation: Motivation and Strategy, pages 363-412, National Bureau of Economic Research, Inc.
    12. Jeremy Rudd & Karl Whelan, 2006. "Can Rational Expectations Sticky-Price Models Explain Inflation Dynamics?," American Economic Review, American Economic Association, vol. 96(1), pages 303-320, March.
    13. Galí, Jordi & Gertler, Mark, 1999. "Inflation Dynamics: A Structural Economic Analysis," CEPR Discussion Papers 2246, C.E.P.R. Discussion Papers.
    14. Mankiw, N Gregory, 2001. "The Inexorable and Mysterious Tradeoff between Inflation and Unemployment," Economic Journal, Royal Economic Society, vol. 111(471), pages 45-61, May.
    15. Chengsi Zhang & Denise R. Osborn & Dong Heon Kim, 2008. "The New Keynesian Phillips Curve: From Sticky Inflation to Sticky Prices," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 40(4), pages 667-699, June.
    16. Lawrence J. Christiano & Martin Eichenbaum & Charles L. Evans, 2005. "Nominal Rigidities and the Dynamic Effects of a Shock to Monetary Policy," Journal of Political Economy, University of Chicago Press, vol. 113(1), pages 1-45, February.
    17. Kamiar Mohaddes & Mehdi Raissi, 2014. "Does Inflation Slow Long-Run Growth in India?," Cambridge Working Papers in Economics 1440, Faculty of Economics, University of Cambridge.
    18. Roberts John M., 2005. "How Well Does the New Keynesian Sticky-Price Model Fit the Data?," The B.E. Journal of Macroeconomics, De Gruyter, vol. 5(1), pages 1-39, September.
    19. Abbas, Syed K. & Bhattacharya, Prasad Sankar & Sgro, Pasquale, 2016. "The new Keynesian Phillips curve: An update on recent empirical advances," International Review of Economics & Finance, Elsevier, vol. 43(C), pages 378-403.
    20. Calvo, Guillermo A., 1983. "Staggered prices in a utility-maximizing framework," Journal of Monetary Economics, Elsevier, vol. 12(3), pages 383-398, September.
    21. Sbordone, Argia M., 2002. "Prices and unit labor costs: a new test of price stickiness," Journal of Monetary Economics, Elsevier, vol. 49(2), pages 265-292, March.
    22. Raghuram G. Rajan, 2016. "The Fight against Inflation: A Measure of our Institutional Development," Working Papers id:10954, eSocialSciences.
    23. Lucas, Robert E, Jr, 1973. "Some International Evidence on Output-Inflation Tradeoffs," American Economic Review, American Economic Association, vol. 63(3), pages 326-334, June.
    24. Gali, Jordi & Gertler, Mark & Lopez-Salido, J. David, 2001. "European inflation dynamics," European Economic Review, Elsevier, vol. 45(7), pages 1237-1270.
    25. A. W. Phillips, 1958. "The Relation Between Unemployment and the Rate of Change of Money Wage Rates in the United Kingdom, 1861–1957," Economica, London School of Economics and Political Science, vol. 25(100), pages 283-299, November.
    26. Gali, Jordi & Gertler, Mark & David Lopez-Salido, J., 2005. "Robustness of the estimates of the hybrid New Keynesian Phillips curve," Journal of Monetary Economics, Elsevier, vol. 52(6), pages 1107-1118, September.
    27. Patra, Michael Debabrata & Khundrakpam, Jeevan Kumar & Gangadaran, Sivaramakrishnan, 2017. "The quest for optimal monetary policy rules in India," Journal of Policy Modeling, Elsevier, vol. 39(2), pages 349-370.
    28. Julio J. Rotemberg & Michael Woodford, 1997. "An Optimization-Based Econometric Framework for the Evaluation of Monetary Policy," NBER Chapters, in: NBER Macroeconomics Annual 1997, Volume 12, pages 297-361, National Bureau of Economic Research, Inc.
    29. Takatoshi Ito & Kiyotaka Sato, 2008. "Exchange Rate Changes and Inflation in Post‐Crisis Asian Economies: Vector Autoregression Analysis of the Exchange Rate Pass‐Through," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 40(7), pages 1407-1438, October.
    30. Jeremy Rudd & Karl Whelan, 2007. "Modeling Inflation Dynamics: A Critical Review of Recent Research," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 39(s1), pages 155-170, February.
    31. Newey, Whitney & West, Kenneth, 2014. "A simple, positive semi-definite, heteroscedasticity and autocorrelation consistent covariance matrix," Applied Econometrics, Russian Presidential Academy of National Economy and Public Administration (RANEPA), vol. 33(1), pages 125-132.
    32. Kapur, Muneesh & Behera, Harendra, 2012. "Monetary Transmission Mechanism in India: A Quarterly Model," MPRA Paper 70631, University Library of Munich, Germany.
    33. Mazumder, Sandeep, 2011. "The stability of the Phillips curve in India: Does the Lucas critique apply?," Journal of Asian Economics, Elsevier, vol. 22(6), pages 528-539.
    34. Goyal, Ashima & Tripathi, Shruti, 2015. "Separating shocks from cyclicality in Indian aggregate supply," Journal of Asian Economics, Elsevier, vol. 38(C), pages 93-103.
    35. Batini, Nicoletta & Jackson, Brian & Nickell, Stephen, 2005. "An open-economy new Keynesian Phillips curve for the U.K," Journal of Monetary Economics, Elsevier, vol. 52(6), pages 1061-1071, September.
    36. Naveen Srinivasan & Vidya Mahambare & M. Ramachandran, 2006. "Modelling Inflation in India: A Critique of the Structuralist Approach," Journal of Quantitative Economics, Springer;The Indian Econometric Society (TIES), vol. 4(2), pages 45-58, July.
    37. repec:nca:ncaerj:v:10:y:2014:i:1:p:117-203 is not listed on IDEAS
    38. Pami Dua & Upasna Gaur, 2010. "Determination of inflation in an open economy Phillips curve framework: the case of developed and developing Asian countries," Macroeconomics and Finance in Emerging Market Economies, Taylor & Francis Journals, vol. 3(1), pages 33-51.
    39. Jordi Galí & Tommaso Monacelli, 2005. "Monetary Policy and Exchange Rate Volatility in a Small Open Economy," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 72(3), pages 707-734.
    40. repec:nbr:nberre:0126 is not listed on IDEAS
    41. Ball, Laurence & Chari, Anusha & Mishra, Prachi, 2016. "Understanding Inflation in India," India Policy Forum, National Council of Applied Economic Research, vol. 12(1), pages 1-45.
    42. Yun, Tack, 1996. "Nominal price rigidity, money supply endogeneity, and business cycles," Journal of Monetary Economics, Elsevier, vol. 37(2-3), pages 345-370, April.
    43. Yash P. Mehra, 2004. "The output gap, expected future inflation and inflation dynamics: another look," Working Paper 04-06, Federal Reserve Bank of Richmond.
    44. Fischer, Stanley, 1977. "Long-Term Contracts, Rational Expectations, and the Optimal Money Supply Rule," Journal of Political Economy, University of Chicago Press, vol. 85(1), pages 191-205, February.
    45. Timothy Cogley & Argia M. Sbordone, 2008. "Trend Inflation, Indexation, and Inflation Persistence in the New Keynesian Phillips Curve," American Economic Review, American Economic Association, vol. 98(5), pages 2101-2126, December.
    46. Patra, Michael Debabrata & Khundrakpam, Jeevan Kumar & George, Asish Thomas, 2014. "Post-Global Crisis Inflation Dynamics in India: What has changed?," India Policy Forum, National Council of Applied Economic Research, vol. 10(1), pages 117-203.
    47. Taylor, John B, 1980. "Aggregate Dynamics and Staggered Contracts," Journal of Political Economy, University of Chicago Press, vol. 88(1), pages 1-23, February.
    48. Jagadish Prasad Sahu, 2013. "Inflation dynamics in India: A hybrid New Keynesian Phillips Curve approach," Economics Bulletin, AccessEcon, vol. 33(4), pages 2634-2647.
    49. Christina D. Romer & David H. Romer, 1997. "Reducing Inflation: Motivation and Strategy," NBER Books, National Bureau of Economic Research, Inc, number rome97-1.
    50. Kushal Banik Chowdhury & Nityananda Sarkar, 2017. "Is the Hybrid New Keynesian Phillips Curve Stable? Evidence from Some Emerging Economies," Journal of Quantitative Economics, Springer;The Indian Econometric Society (TIES), vol. 15(3), pages 427-449, September.
    51. Fuhrer, Jeffrey C., 2010. "Inflation Persistence," Handbook of Monetary Economics, in: Benjamin M. Friedman & Michael Woodford (ed.), Handbook of Monetary Economics, edition 1, volume 3, chapter 9, pages 423-486, Elsevier.
    52. Michael Debabrata Patra & Muneesh Kapur, 2012. "A monetary policy model for India," Macroeconomics and Finance in Emerging Market Economies, Taylor & Francis Journals, vol. 5(1), pages 18-41, March.
    53. Charles Goodhart & Boris Hofmann, 2005. "The Phillips Curve, the IS Curve and Monetary Transmission: Evidence for the US and the Euro Area," CESifo Economic Studies, CESifo Group, vol. 51(4), pages 757-775.
    54. Kapur, Muneesh, 2013. "Revisiting the Phillips curve for India and inflation forecasting," Journal of Asian Economics, Elsevier, vol. 25(C), pages 17-27.
    55. Rotemberg, Julio J, 1982. "Sticky Prices in the United States," Journal of Political Economy, University of Chicago Press, vol. 90(6), pages 1187-1211, December.
    56. Michael Debabrata Patra & Partha Ray, 2010. "Inflation Expectations and Monetary Policy in India: An Empirical Exploration," IMF Working Papers 2010/084, International Monetary Fund.
    57. Abbas, Syed Kanwar & Sgro, Pasquale M., 2011. "New Keynesian Phillips Curve and inflation dynamics in Australia," Economic Modelling, Elsevier, vol. 28(4), pages 2022-2033, July.
    58. Gali, Jordi & Gertler, Mark, 1999. "Inflation dynamics: A structural econometric analysis," Journal of Monetary Economics, Elsevier, vol. 44(2), pages 195-222, October.
    59. Sbordone, Argia M., 2005. "Do expected future marginal costs drive inflation dynamics?," Journal of Monetary Economics, Elsevier, vol. 52(6), pages 1183-1197, September.
    60. Lucas, Robert Jr., 1972. "Expectations and the neutrality of money," Journal of Economic Theory, Elsevier, vol. 4(2), pages 103-124, April.
    61. Paul, Biru Paksha, 2009. "In search of the Phillips curve for India," Journal of Asian Economics, Elsevier, vol. 20(4), pages 479-488, September.
    62. Sophocles N. Brissimis & Nicholas S. Magginas, 2008. "Inflation Forecasts and the New Keynesian Phillips Curve," International Journal of Central Banking, International Journal of Central Banking, vol. 4(2), pages 1-22, June.
    63. Roberts, John M, 1995. "New Keynesian Economics and the Phillips Curve," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 27(4), pages 975-984, November.
    64. Jondeau, Eric & Le Bihan, Herve, 2005. "Testing for the New Keynesian Phillips Curve. Additional international evidence," Economic Modelling, Elsevier, vol. 22(3), pages 521-550, May.
    65. John B. Taylor, 1999. "Monetary Policy Rules," NBER Books, National Bureau of Economic Research, Inc, number tayl99-1.
    66. Lucas, Robert Jr, 1976. "Econometric policy evaluation: A critique," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 1(1), pages 19-46, January.
    67. Mehra Yash P, 2004. "The Output Gap, Expected Future Inflation and Inflation Dynamics: Another Look," The B.E. Journal of Macroeconomics, De Gruyter, vol. 4(1), pages 1-19, December.
    68. Singh, B. Karan & Kanakaraj, A. & Sridevi, T.O., 2011. "Revisiting the empirical existence of the Phillips curve for India," Journal of Asian Economics, Elsevier, vol. 22(3), pages 247-258, June.
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    3. Behera, Harendra Kumar & Patra, Michael Debabrata, 2022. "Measuring trend inflation in India," Journal of Asian Economics, Elsevier, vol. 80(C).
    4. Anuradha Patnaik, 2022. "Measuring Demand and Supply Shocks From COVID-19: An Industry-Level Analysis for India," Margin: The Journal of Applied Economic Research, National Council of Applied Economic Research, vol. 16(1), pages 76-105, February.
    5. Angeline B. Rohoia & Parmendra Sharma, 2021. "Do Inflation Expectations Matter for Small, Open Economies? Empirical Evidence from the Solomon Islands," JRFM, MDPI, vol. 14(9), pages 1-18, September.
    6. Vijay Victor & Joshy Joseph Karakunnel & Swetha Loganathan & Daniel Francois Meyer, 2021. "From a Recession to the COVID-19 Pandemic: Inflation–Unemployment Comparison between the UK and India," Economies, MDPI, vol. 9(2), pages 1-19, May.

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    More about this item

    Keywords

    Phillips curve; inflation; output gap; new Keynesian;
    All these keywords.

    JEL classification:

    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian; Modern Monetary Theory
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • C36 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Instrumental Variables (IV) Estimation
    • C14 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Semiparametric and Nonparametric Methods: General

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