This study investigated the complex interrelationships between fiscal policy, monetary policy,
trade policies and economic growth in Nigeria, employing a comprehensive econometric analysis
using the Autoregressive Distributed Lag (ARDL) model. By analyzing quarterly time series data
spanning from 1981 to 2023, the research explores both the long-run equilibrium relationships
and short-run dynamics among the key macroeconomic policy variables and economic
performance indicators. The results of the ARDL bounds test indicate a significant cointegrating
relationship, suggesting that fiscal, monetary, and trade policies are jointly associated with longterm economic growth in Nigeria. The empirical findings reveal that fiscal and monetary policies
exert a positive and statistically significant impact on economic growth. Specifically, increased
government spending and prudent monetary management such as appropriate money supply and
interest rate adjustments have contributed to improved macroeconomic performance. In contrast,
trade policies were found to have a negative impact on economic growth, which may reflect
challenges such as trade imbalances, poor implementation of trade agreements, and over-reliance
on imports. Furthermore, the error correction mechanism (ECM) analysis shows a high speed of
adjustment; indicating that short-term deviations from the long-run equilibrium are corrected
relatively quickly, further confirming the stability of the underlying relationships. This study offers
valuable insights for policymakers, emphasizing the need for better coordination and consistency
among fiscal, monetary, and trade policy measures. It also contributes to the body of literature
examining the nexus between macroeconomic policy frameworks and economic development,
providing practical guidance for enhancing Nigeria’s policy effectiveness and long-term growth
prospects.