ZUPCO doubled its fares last month from $4 to $8 for buses and $8 to $16 for commuter omnibuses.
The Zimbabwe dollar has only fallen by $2.85 against the United States dollar since the last increase.
The price of fuel is, however, also going up from tomorrow.
Diesel will go up by $3.00 to $86.36 and petrol will increase from $93.15 to $97.93.
Both petrol and diesel, will, however cost less in United States dollars going down from US$1.09 to US$1.04 for disel and from US$1.28 to US$1.18.