Cuba will have to assume the complex process of the currency unification without the help of international financial institutions, with very limited international reserves and at a time of low economic growth. Though the increase of the fiscal deficit has not been announced, it would seem inevitable in the short term to mitigate the impacts of the currency unification. The most probable forecast for after “zero day” is an increase of inflation. What would remain to be done is to assess its magnitude, permanence in time and distribution among the different markets and sectors.