Crude oil prices and the balance of trade: Asymmetric evidence from selected OPEC member countries

The contribution of this article is to assess whether the effects of crude oil price fluctuations on the trade balance are symmetric or asymmetric in the context of an individual oil-exporting country, specifically four OPEC member countries - Iran, Nigeria, Saudi Arabia, and Venezuela. To examine this subject thoroughly, we use three different measures of trade balances such as oil trade balance, non-oil trade balance, and total trade balance, and examine whether oil prices are asymmetrically passed on to the trade balances for those OPEC countries in the long- and short-run. After implementation of the nonlinear autoregressive distributed lag (ARDL) model, we find that changes in oil prices indeed have asymmetric effects on the oil trade balance for all four OPEC countries in the long-run, though not in the short-run. In the case of the non-oil and total trade balance, however, the asymmetry of oil price changes is not detected in both the long- and short-run.