This paper examines the breakdown of the Brazilian government's budget
-balance mechanism, which began in the mid-1980s. The Brazilian govern
ment became unable to balance its budget through tax increases or expe
nditure decreases. Evidence presented in this paper suggests that the
government began to rely on unannounced reductions in the indexed infl
ation compensation on its debt. These reductions can be thought of as
an implicit default on domestically held debt. While the ''temporary a
sset freeze'' of the March 1990 Collor plan was a highly publicized in
stance of such a default, it was not the first.