بررسی اثر شوک مالیات بر عایدی سهام و سپرده‌های بانکی در چارچوب تعادل عمومی پویای تصادفی کینزی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دکتری اقتصاد

2 استادیار گروه اقتصاد، دانشگاه میبد

3 استادیار گروه اقتصاد، دانشگاه گنبد کاووس

10.22034/epj.2022.17952.2297

چکیده

امروزه اکثر کشورها مخارج خود را از طریق درآمدهای مالیاتی تامین مالی می‌کنند. در ایران طی سال‌های گذشته معافیت و مشوق‌های مالیاتی به بخش‌های مختلف اقتصادی اعطا شده است. سود سپرده‌های بانکی و عایدات سهام از جمله این موارد می‌باشند. علی‌رغم این‌که معافیت مالیاتی در راستای تحقق برخی اهداف مد نظر قرار می‌گیرد، برقراری آن موجب کاهش درآمد دولت می‌شود. به دنبال کاهش درآمدهای نفتی کشور در سال‌های اخیر یکی از مباحث نوین که در بین اقتصاددانان و سیاستمداران مطرح است وضع مالیات بر عایدات سهام و سود سپرده‌های بانکی می‌باشد. نظریه‌های متناقضی در مورد تاثیر وضع مالیات بر سود سپرده و نحوه اثرگذاری آن بر تولید وجود دارد. در مورد وضع مالیات بر عایدات سهام نیز نظرات متضادی در مورد تاثیری که مالیات بر سود سهام بر رفتار شرکت و در نتیجه بر عملکرد اقتصادی دارد وجود دارد. بر اساس دیدگاه جدید، مالیات از سود تقسیمی بر هزینه نهایی سرمایه تأثیر نمی‌گذارد و در نتیجه بر تصمیمات سرمایه‌گذاری تأثیری ندارد. بر اساس دیدگاه قدیمی، مالیات بر سود سهام تحریف‌کننده است و هزینه حقوق صاحبان سهام را افزایش می دهد. در این راستا هدف از مطالعه حاضر بررسی تاثیرات وضع مالیات بر عایدات سهام و سود سپرده بانکی بر متغیرهای کلان اقتصادی با رویکرد تعادل عمومی تصادفی پویا (DSGE) طی سال‌های 1398-1370 می‌باشد. نتایج نشان‌گر آن است که با وضع مالیات بر عایدی سهام، میزان سرمایه‌گذاری مولد کاهش یافته و شرکت‌ها در تامین مالی با مشکل مواجه شده و میزان سرمایه آن‌ها کاهش می‌یابد و به دنبال آن تولید با کاهش روبرو ﻣﯽﮔﺮدد. با وضع مالیات بر سپرده‌های بانکی نیز نتایج مشابهی حاصل ﻣﯽﮔﺮدد به طوری که تولید از حالت با ثبات خود کاهش می‌یابد و دیدگاه قدیمی تایید ﻣﯽﮔﺮدد.

کلیدواژه‌ها


عنوان مقاله [English]

Investigating the Effects of Stock Earnings and Bank Deposits Tax Shocks in the Context of Keynesian Dynamic Stochastic General Equilibrium

نویسندگان [English]

  • Ahmad Gholami 1
  • Ehsan Salimi 2
  • Bagher Adabi Airouzjaee 3
1 PhD of Economics, Tehran University, Tehran, Iran
2 Assistant Professor of Economics, Meybod University, Meybod, Iran
3 Assistant Professor of Economics, Gonbad Kavous University, Gonbad Kavous, Iran
چکیده [English]

Introduction: In most countries, government expenditures are provided from tax revenues. But, in Iran, government budget depends on oil revenues. In other words, various economic activities in Iran such as bank deposits interest and stock earnings are tax-exempt. Although tax exemption pursues some goals, it reduces government revenues. In recent years, after severe sanctions against Iran's oil exports and a sharp drop in government oil revenues, increasing tax revenues has become one of the main alternatives to offset the decline in the oil revenues. On the other hand, the increased participation of investors in the stock market in recent years has provided a good opportunity for the government to increase its revenues in order to reduce budget deficits. Dividends and interests on bank deposits can be considered as new tax bases. It is reported that the Iranian National Tax Administration and the Ministry of Economic Affairs and Finance intend to levy taxes on bank deposits interests and dividends, but this plan has not yet been implemented. Therefore, it is necessary to study this issue. In this regard, the purpose of this study is to investigate the effects of taxlng stock earnings and bank deposit interests on macroeconomic variables with a dynamic stochastic equilibrium (DSGE) approach.
Methodology: This research investigated the effects of stock earnings and bank deposits tax shocks in the context of Keynesian dynamic stochastic general equilibrium (DSGE) approach during the years 1991-2019. The economic model in this study includes households, manufacturing enterprises, banks, government as fiscal policymakers and the central bank as monetary policymakers. Intermediary firms operate in a monopoly competition framework, and the Kalvo pricing method is used to express price rigidity. The purpose of using this method is to avoid model's rapid adjustment in response to shocks. The problem with analyzing stochastic dynamic general equilibrium models is that equilibrium equations are nonlinear, so linearization is necessary. For linearization, Taylor’s expansion method is applied. The linearized logarithm equations of household demand for stocks show that the amount of investment in the financial market depends on income, future price expectations and the expected dividends. To solve stochastic general equilibrium models, the parameters of the calibration model must be quantified. The conventional method to quantify the parameters is the calibration method. It is believed that the corresponding tax policy has not yet been implemented in Iran. Also, because of poor statistical data, this study uses the calibration method instead of Bayesian method. In this method, the parameters of the model are selected in such a way that the best match is achieved between the predicted moments of the model and the real data moments of the Iranian economy.
Results and Discussion: The results show that taxation on bank deposit interests reduces the amount of bank reserves. Then, as a result, banks request higher rate for lending, and the amount of loan demand is reduced. Ultimately, the influx of cash into the production sector and investment decreases. The results of this model are consistent with Gondolfi's theory (1982) that states savings decrease due to increased interests on bank deposits. Note that the government tax revenues increase with the imposition of a tax on bank deposits, but it soon deviates from its stable amount and then begins to decrease. This is due to the transfer of resources to other financial markets which are tax-exempt. Furthermore, with the introduction of stock income tax, the demand for stock will decrease, so does the amount of productive investment. This makes companies face financing difficulties. With reduced level of total production, the disposable income of shareholders and consumption will be reduced. Although, government tax revenues increase after the implementation of the stock tax, after a few periods, the dividends and stock prices as well as the amount of government revenues from the stock income decrease, and the tax revenues move towards a stable amount.
Conclusion: According to the results of this research, it can be concluded that, if the purpose of deposit taxation is to expand the government taxes, instability should be prevented in parallel markets by implementing pre-determined policies. One of these policies is to expand the tax base by imposing a tax on other financial markets such as the foreign exchange, gold, and housing markets. On the other hand, taxation on stock markets increases the amount of liquidity in the economy and transfers path of liquidity. If liquidity is directed to the deposit (in the absence deposit tax), the process of moving to a stable position will proceed more rapidly. This is because companies are financed with bank loans and financing problems are partially solved. If liquidity is diverted to speculative activities, however, it will have detrimental effects on the economy.

کلیدواژه‌ها [English]

  • Stock gain tax
  • Deposit tax
  • Tax base
  • Stochastic dynamic equilibrium model
Bahrami, J. and Goreishi, N. (2011). "Analyzing the Monetary Policy in Iran Economy by Using a Dynamic Stochastic General Equilibrium Model" .Journal of Economics and Modeling 5(13): 1-20.
Bayat, M. Afsari, Z. and Tavakolian, H. (2016). "Monetary Policy and Stock Price Index in DSGE Models Framework". Quarterly Journal of Fiscal and Economic Policy 24(78): 171-206.
Calvo, G.A. (1983). "Staged Prices in a Utility-Maximizing Framework". Journal of Monetary Economics 12: 383-398.
Chiorazzo, V. and Milani, C. (2011). "The Impact of Taxation on Bank Profits: Evidence from EU Banks". Journal of Banking & Finance 35: 3202-3212.
Dib, A. (2010). Banks, Credit Market Friction, and Business Cycles, Bank of Canada.
Dixit, A. K. and Stiglitz, J. E. (1977). "Monopolistic Competition and Optimum Product Diversity". The American Economic Review 67: 297-308.
Ebrahimi, S. (2014). "Structure of Financial Market in Iran: Bank-Based or Market-Based". Quarterly Journal of Fiscal and Economic Policy 1(4): 25-44.
Fakrhosseini, S. (2011). "Stochastic Dynamic General Equilibrium Approach for Monetary Business Cycles of Iran's Economy". Journal of Economics and Modeling 1(3): 1-28.
Gandolfi. E. (1982). "Inflation, Taxation, and Interest Rates". Journal of American Finance Association 37(3): 797-807.
Gerali, A. and Neri, S. and Sessa, L. and Signoretti, F.M. (2010). "Credit and Banking in a DSGE Model for Euro Area". Working Paper 740.
Gholami, A. and Abasinejad, H. (2018). "Implementation of Value-Added Tax on Iran Banking Services: An Application of DSGE Model". Journal of Money and Economy 11(3): 283-303.
Habermeier, K. and Kirilenko, A. (2003). "Securities Transaction Taxes and Financial Markets". IMF Staff Papers 50: 165-80.
Hollander, H. and Liu, G. (2013). "The Equity Price Channel in a New-Keynesian DSGE Model with Financial Frictions and Banking". Stellenbosch Economic Working Papers.
Johannesen, N. (2014). "Tax Evasion and Swiss Bank Deposits". Journal of Public Economics 111: 46-62.
Junior, C. and Sampaio, A. (2014). "Tax Reduction Policies of the Productive Sector and Its Impacts on Brazilian Economy". Working Paper No. 36.
Kavand, H. (2009). Explanation the Effects of Oil Revenues and Monetary Policies in the form of a Real Business Cycles Model in Iranian Economy, PhD. Thesis, Economic Faculty, University of Tehran.
Keen, M. (2011). "Rethinking the Taxation of the Financial Sector". CESifo Economic Studies 57: 1-24.
Khodadadi, F. (2018). "Taxation on Bank Deposits Interest with Emphasis on Allocation Efficiency". 12th Conference on Tax and Fiscal Policies in Iran, Tehran.
Khodadadkashi, F. and Jani, S. (2015). "Feasibility Study of Introducing Iranian Bank Deposit Interest Tax with Emphasis on Allocative Efficiency". Tax Journal 23(26): 9-26.
Khodaverdizadeh, S. and Dashtbani, Y. (2019). "Designing a System Model of Accountability in Tax System of the Islamic Republic of Iran (Case Study of Mazandaran Province Tax Affairs Directorates)". Journal of Tax Research 27(43): 7-34.
Komijani, A. and Tavakolian, H. (2012). "Monetary Policy under Fiscal Dominance and Implicit Target Inflation in the form of Dynamic Stochastic Equilibrium Model for the Iranian Economy". Journal of Economic Modeling Research 8: 87-117.
Lim, G.C. and McNelis, P.D. (2008(. Computational Macroeconomics for the Open Economy, Cambridge, The MIT Press. p. 231.
Matheson, T. (2011). "Taxing Financial Transactions: Issues and Evidence". IMF Working Paper 11-54.
Nisticò, S. (2010). "Stock Market Conditions and Monetary Policy in a DSGE Model for the U.S.". Marco Fanno Working Papers from Dipartimento di Scienze Economiche.
Rahmani, A. Samadi, S. and Bakhshi Dastjerdi, R. (2019). "An Examination of the Effect of Fiscal Policy Shock on Stock Market in: A DSGE Approach". Quarterly Economic Strategy 8(29): 81-110.
Restrepo, F. (2018). "The Effects of Taxing Bank Transactions on Bank Credit and Industrial Growth: Evidence from Latin America". Journal of International Money and Finance: 1-53.
Salahmanesh, S. Arman, A. Anvari, E. and Pourjavan, A. (2018). "The Estimation of Capital Market Dynamisms in Iran’s Real Sector Economy in a DSGE Model". Quarterly Journal of Quantitative Economics 15(1): 147-179.
Schulmeister, S. Schratzenstaller, M. & Picek, O. (2008). "A General Financial Transaction Tax: Motives, Revenues, Feasibility and Effects". Oesterreichisches Institut fuer Wirtschaftsforschung WP 3/2008.
Shahmoradi, A. Haqiqi, I. and Zahedi, Z. (2011). "Impact Analysis of Energy Price Reform and Cash Subsidy Payment in Iran: CGE Approach". Journal of Economic Research and Policies 19(57): 5-30.
Song, F. and Zhang, J. (2005). "Securities Transaction Tax and Market Volatility". The Economic Journal 115: 1103-20.
Woodford, M. (2003). Interest and Prices: Foundations of a Theory of Monetary Policy, Princeton University Press, Princeton.