Last week the country outlawed the multi-currency regime and re-introduced the local dollar which was demonitised in 2008 after reaching astronomical levels of hyperinflation.
People are sceptical of the Zimbabwean dollar yet to be printed but represented by the bond notes and the interim currency, the RTGS dollar.
Appearing before the parliamentary portfolio committee of finance and economic development on Monday, minister Mthuli Ncube said the move was yielding positive results.
"What we have at the moment is fiscal discipline of the highest quality and the results speak for themselves," he said.
"If you go back to 2008, it is the exact opposite. We had no fiscal discipline."
But prices of goods and services in many shops have not dropped as projected. And President Emmerson Mnangagwa said he would crack down on retailers.
"Those businesses that have not lowered prices, we are planning something for them. Their rod is being prepared," he said at the opening of a highway road in Chiredzi.