Investigating a threshold effect in Twin Deficit Hypothesis: Evidence from the BRICS Economies

Tochukwu Timothy Okoli, Devi Datt. Tewari, Kehinde Damilola Ileasanmi and Evan Lau

Cogent Economics & Finance, 2021, vol. 9, issue 1, 1886451

Abstract: Over the years, empirical evidence on twin-deficit hypothesis has been inconsistent. While some support it, others affirm the prevalence of the Ricardian Equivalence. This study therefore examines a nonlinear/threshold relationship between the deficits among the BRICS economies using the Panel ARDL (1, 1) model with a quarterly data spanning from 2000q1 to 2019q4. The efficient estimator of PMG based on the Hausman test shows that twin divergence holds among the BRICS market up to a certain threshold beyond which the hypothesis holds. This suggests that BRICS countries face a dampening effect of fiscal/current deficits on their current account/fiscal deficits to a point after which further increases in either of the deficits will significantly raise the other. The static fixed effect technique and second-order U-shaped test reveal a consistent result. The speed of adjustment to long-run steady state for the current account deficits and the fiscal deficits models are 27.4 and 52.5 per cents respectively, at 5 per cent significance level. However, higher growth shocks and interest rate lead to divergence of the deficits while exchange rate and trade openness dampen it. Fiscal deepening and management within a bound were recommended as the panacea for twin-deficit problems.

Date: 2021
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DOI: 10.1080/23322039.2021.1886451

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