A Malian former general working for the International Organisation of la Francophonie (OIF), Siaka Sangare, , announced the decision in Lome.
"The current state of the voters list is good enough for the 2015 vote," Sangare said.
The French-speaking nations group has worked with election organisers to address opposition complaints that election lists included numerous duplicates, potentially favouring President Faure Gnassingbe.
The president, who took over when his father died after 38 years in power, is favourite to secure a third term having already won elections in 2005 and 2010.
OIF's Sangare admitted that the list was not perfect but it has been approved by representatives of all the candidates.
"I think the list is satisfactory,’’ he said.
The vote was originally scheduled for April 15 but was delayed by 10 days after the Economic Community of West African States (ECOWAS) called for the lists to be revised.
The updated list has just over 3.5 million potential voters. The last census, carried out in 2010, showed that Togo's population was around 6 million.
One of the problems found was that over 24,500 voter cards bore exactly the same number but had different names.
Experts also found that 291,907 cards had been linked to polling stations that did not correspond to where voters had registered.