This study examines the empirical relationship between trade liberalization and tax revenue in Pakistan for the period 1982-2013. Estimation results based on ARDL model show that there exists positive relationship between trade liberalization and total tax revenue in Pakistan over the study period. The coefficient of lagged error term (ECM_t–1) in short-run model is negative and significant suggesting speed of con-vergence to equilibrium. The coefficient (–0.3119) implies that deviation from the long-term equilibrium is corrected by 31.19% over one year. Sound and stable trade policy along with favourable environment are needed that promotes import of raw material, capital and intermediate goods which enhances trade in the country leading to enhancement of tax collection in Pakistan.

Agbeyegbe, T. D., J. Stotsky and A. WoldeMariam (2006), Trade liberalization, exchange rate changes, and tax revenue in Sub-Saharan Africa. Journal of Asian Economics, Volume 17(2), pp. 261-284.       
http://dx.doi.org/10.1016/j.asieco.2005.09.003

Basirat, M., F. Aboodi and A. Ahangari (2014), Analyzing the effect of economic variables on total tax revenues in Iran. Asian Economic and Financial Review, Volume 4(6), pp. 755-767.

Cagé, J. and L. Gadenne (2012), The fiscal cost of trade liberalization. Paris School of Economics Working Paper # 2012-27.

Chaudhry, I. S. and F. Munir (2010), Determinants of low tax revenue in Pakistan. Pakistan Journal of Social Sciences (PJSS), Volume 30(2), pp. 439-452.

Dickey, D. A. and W. A. Fuller (1979), Distribution of estimators for autoregressive time series with unit root. Journal of the American Statistical Association, Volume 74(366a), pp. 427-431.           
http://dx.doi.org/10.1080/01621459.1979.10482531

Dioda, L. (2012), Structural Determinants of Tax Revenue in Latin America and the Caribbean, 1990-2009. United Nations, ECLAC Sub Regional Headquarters in Mexico.

Dornbusch, R. (1992), The case for trade liberalization in developing countries. Journal of Economic Perspectives, Volume 6(1), pp. 69-85.  
http://dx.doi.org/10.1257/jep.6.1.69

Geng, N. (2008), Trade Liberalization, Market Efficiency and Productivity Growth: A Smooth Transition Approach on Indian Firms. Department of Economics, UCSC.

Ghani, Z. (2011), A Cross Country Analysis of Tax Performance with Special Focus on Pakistan’s Tax Effort. Master’s Degree Project, Swedish Business School at Orebro University.

Glenday, G. (2002), Trade liberalization and customs revenues: Does trade liberalization lead to lower customs revenues? The case of Kenya. Journal of African Finance and Economic Development, Volume 5(2), pp. 89-125.

Greenaway, D., W. Morgan and P. Wright (2002), Trade liberalization and growth in developing countries. Journal of Development Economics, Volume 67(1), pp. 229-244.           
http://dx.doi.org/10.1016/S0304-3878(01)00185-7

Gupta, A. S. (2007), Determinants of tax revenue efforts in developing countries. IMF Working Paper # WP/07/184.

Immurana, M, I. and A. M. Rahman (2013), The impact of trade liberalization on tax revenue in Ghana: A cointegration analysis. Africa Development and Resources Research Institute Journal, Volume 3(3), pp. 1-19.

Karagöz, K. (2013), Determinants of tax revenue: Does sectoral composition matter? Journal of Finance, Accounting and Management, Volume 4(2), pp. 50-63.

Keen, M. and J. E. Ligthart (2002), Coordinating tariff reduction and domestic tax reform. Journal of International Economics, Volume 56(2), pp. 489-507. 
http://dx.doi.org/10.1016/S0022-1996(01)00123-4

Mahmood, H. and A. R. Chaudhary (2013), Impact of FDI on tax revenue in Pakistan. Pakistan Journal of Commerce and Social Sciences, Volume 7(1), pp. 59-69.

Manni, U. H. and M. N. I. Afzal (2012), Effect of trade liberalization on economic growth of developing countries: A case of Bangladesh economy. Journal of Business, Economics and Finance, 1(2), pp. 37-44.

Marchant, M. A. and W. M. Snell (1997), Macroeconomic and International Policy Terms. The University of Kentucky Cooperative Extension Service, USA.

Mushtaq, S., K. Bakhsh and S. Hassan (2012), Estimating impact of trade liberalization on tax revenue in Pakistan. Journal of Agriculture and Social Sciences, Volume 8(4), pp. 148-150.

Newman, C., J. Rand and F. Tarp (2013), Trade liberalization, Supply Chains and Productivity. Nordic Conference in Development Economics, Bergen, June 2013.

Nwosa, P. I., M. O. Saibu and O. O. Fakunle (2012), The effect of trade liberalization on trade tax revenue in Nigeria. African Economic and Business Review, Volume 10(2), pp. 28-43.

Pesaran, M. Hashem, Yongcheol Shin and Richard J. Smith (2001), Bounds testing approaches to the analysis of level relationships. Journal of Applied Econometrics, Volume 16(3), pp. 289-326. http://dx.doi.org/10.1002/jae.616

Phillips, P. C. B. and P. Perron (1988), Testing for a unit root in time series regression. Biometrika, Volume 75(2), pp. 335-346.        
http://www.jstor.org/stable/2336182

Pritchett, L. and G. Sethi (1994), Tariff rates, tariff revenue, and tariff reform: Some new facts. The World Bank Economic Review, Volume 8(1), pp. 1-16.          
http://dx.doi.org/10.1093/wber/8.1.1

Tanzi, V. (1989), The impact of macroeconomic policies on the level of taxation and the fiscal balance in developing countries. International Monetary Fund Staff Papers, Volume 36(3), pp. 633-656. http://dx.doi.org/10.2307/3867050

Topalova, P. and A. Khandelwal (2011), Trade liberalization and firm productivity: The case of India. The Review of Economics and Statistics, Volume 93(3), pp. 995-1009. http://dx.doi.org/10.1162/REST_a_00095

Utkulu, U. and D. Ozdemir (2004), Does trade liberalization cause a long-run economic growth in Turkey. Economics of Planning, Volume 37, pp. 245-266. http://dx.doi.org/10.1007/s10644-005-8080-8

Velaj, E. and L. Prendi (2014), Tax revenue – The determinant factors – The case of Albania. European Scientific Journal, Special Edition Volume 1 (September), pp. 525-531.