This paper examines empirically the causal relationship between budget deficits and trade deficits for Brazil from 1973:1Q through 1991:4Q. This relationship is investigated in the context of Granger's test of causality. The final prediction error criterion, as outlined by Hsiao [1981], is applied in determining the appropriate lag length of the two variables. Empirical results suggested the presence of bilateral causality between trade deficits and budget deficits.