Money Growth Rules in an Emerging Small Open Economy with an informal sector



This paper is concerned with the saddle-path stability of monetary growth rules in a two-country two-sector dynamic stochastic general equilibrium model. Alongside standard features of emerging economies, such as a combination of producer and local currency pricing for exports, fiscal dominance and oil exports, this model also incorporates informal labour and production sectors and examines how these features matter in the context of monetary policy in emerging economies.
We estimate the model on Iran and US data for home and foreign block respectively using Bayesian estimation techniques. Under a benchmark instruments of monetary policy, we show that a Taylor-type money growth rule rather than interest rate, even up to a four period ahead forward-looking has complete stability and determinacy properties in the economy which is also hold regardless of the level of asset market participation, therefore the inverted Taylor principles does not apply in our economy.
Our findings confirm the important propagation channels which are active in the emerging economies and taking into account these features is essential for any policy-related study, such as the stabilizer effect of terms of trade between formal and informal sector, buffer behaviour of informal sector which is dampened in the model of higher informal frictions, disturbance effects of credit constrained household on the business cycle fluctuations and finally, monetary policy shock which is less effective in an environment of high share of informal sector, low informal frictions, high share of limited asset market participations and a trade autarky economy.


1- Ahmed, S., Ahmed, W., Khan, S., Pasha, F., & Rehman, M. (2012). Pakistan economy DSGE model with informality.
2- Anand, R., & Khera, P. (2016). Macroeconomic impact of product and labor market reforms on informality and unemployment in India. International Monetary Fund.
3- Anvari, E., ZARRA, N. M., & FAKHRAEE, E. (2011). Evaluating optimum monetary rule in a dynamic stochastic general equilibrium model using control approach.
4- Batini, N., Levine, P., Lotti, E., & Yang, B. (2011). Informality, frictions and monetary policy. School of Economics Discussion Papers, 711.
5- Benhabib, J., Schmitt-Grohé, S., & Uribe, M. (2001). Monetary policy and multiple equilibria. American Economic Review91(1), 167-186.
6- Bilbiie, F. O. (2008). Limited asset markets participation, monetary policy and (inverted) aggregate demand logic. Journal of Economic Theory140(1), 162-196.
7- Blanchard, O. J., & Kahn, C. M. (1980). The solution of linear difference models under rational expectations. Econometrica: Journal of the Econometric Society, 1305-1311.
8- Boerma, J. (2014). Openness and the (inverted) aggregate demand logic.
9- Carlstrom, C. T., & Fuerst, T. S. (2000). Forward-looking versus backward-looking Taylor rules (No. 0009). Federal Reserve Bank of Cleveland.
10- Carlstrom, C. T., & Fuerst, T. S. (2001). Timing and real indeterminacy in monetary models. Journal of Monetary Economics47(2), 285-298.
11- Castillo, P., & Montoro, C. (2008). Monetary policy in the presence of informal labour markets. Mimeo, Banco Central de Reserva del Peru.
12- Currie, D., & Levine, P. (1993). Rules, reputation and macroeconomic policy coordination. Cambridge University Press. Christiano, L. J., Eichenbaum, M., & Evans, C. L. (2005). Nominal rigidities and the dynamic effects of a shock to monetary policy. Journal of political Economy113(1), 1-45.
13- Christiano, L. J., Trabandt, M., & Walentin, K. (2011). Introducing financial frictions and unemployment into a small open economy model. Journal of Economic Dynamics and Control35(12), 1999-2041.
14- Feizi, M. (2008, December). A new Keynesian small open economy DSGE model in Islamic economic framework: the case of Iran. In Conference on Iran’s Economy at University of Illinois at Urban Champaign (pp. 11-13).
15- Gabriel, V., Levine, P., Pearlman, J., & Yang, B. (2010). An estimated DSGE model of the Indian economy. NIPE WP, 29, 2010.
16- Gali, J., & Monacelli, T. (2005). Monetary policy and exchange rate volatility in a small open economy. The Review of Economic Studies72(3), 707-734.
17- Galí, J., Lópezā€Salido, J. D., & Vallés, J. (2007). Understanding the effects of government spending on consumption. Journal of the European Economic Association5(1), 227-270.
18- Gopinath, G., Itskhoki, O., & Rigobon, R. (2010). Currency choice and exchange rate pass-through. American Economic Review100(1), 304-36.
19- Haider, A., ud Din, M., & Ghani, E. (2012). Monetary policy, informality and business cycle fluctuations in a developing economy vulnerable to external shocks. The Pakistan Development Review, 609-681.
20- Jafari Samimi, A., Tehranchian, A. M., & Ebrahimi, E. (2014). The Effect of Monetary and Non-Monetary Shocks on Inflation and Output in Dynamic Stochastic General Equilibrium Model in Open Economy Condition: Case Study of Iran Economy. Quarterly Journal of Applied Economics Studies in Iran (AESI), 3(10), 1-32.
21- Khera, P. (2016). Macroeconomic Impacts of Gender Inequality and Informality in India. International Monetary Fund.
22- Komijani, A., & Tavakolian, H. (2012). Monetary policy under fiscal dominance and implicit inflation target in Iran: A DSGE approach.
23- Manzoor, D., & Taghipour, A. (2015). A dynamic stochastic general equilibrium model for an oil exporting and small open economy: the case of Iran.
24- Mishra, P., & Montiel, P. (2013). How effective is monetary transmission in low-income countries? A survey of the empirical evidence. Economic Systems37(2), 187-216.
25- Mishra, P., Montiel, P. J., & Spilimbergo, A. (2012). Monetary transmission in low-income countries: Effectiveness and policy implications. IMF Economic Review60(2), 270-302.
26- Paliwal, G. K. (2013). Macroeconomic goals and inflation targeting in India (Doctoral dissertation, University of KOTA, KOTA).
27- Patrick, C. M., & Akanbi, O. A. (2017). The impact of informal economy on the interest rate pass-through: evidence from an ARDL model. African Journal of Economic Review5(2), 130-148.
28- Saxegaard, M., Anand, R., & Peiris, S. J. (2010). An estimated model with macrofinancial linkages for India (No. 10-21). International Monetary Fund.
29- Schneider, F. (2012). The shadow economy and work in the shadow: what do we (not) know?.
30- Smets, F., & Wouters, R. (2002). Openness, imperfect exchange rate pass-through and monetary policy. Journal of monetary Economics49(5), 947-981.
31- Smets, F., & Wouters, R. (2007). Shocks and frictions in US business cycles: A Bayesian DSGE approach. American economic review97(3), 586-606.
32- Soleimani Movahed, M., Afshari, Z., & Pedram, M. (2014). Optimal Policy Rules for Iran in a DSGE Framework (Islamic Musharakah Approach). Journal of Money and Economy, 9(4), 1-30.
33- Uribe, M., & Schmitt-Grohé, S. (2017). Open economy macroeconomics. Princeton University Press.
34- Woodford, M. (2003). Interest and Prices: Foundations of a Theory of Monetary Policy, Princeton University.