In the 12 months to June 2018, the service grew 41% compared to the previous year, the bank says.
First National Bank expects R1.5 billion to be sent via its eWallet service by December.
First National Bank customers have sent over R33?billion via the bank's mobile wallet since its introduction in 2009.
The operator says it is not going to stop its mobile money offering in SA, despite Vodacom's planned exit from the local mobile money arena.
First National Bank spent big money and time to get its mobile virtual network operator off the ground, it says.
FastVan lets users gather instant quotes, compare prices and book courier, local delivery and removal services tailored to their needs.
Money sent through FNB's mobile money solution topped the R1?billion a month mark for the first time in July.
The next generation of growth in the developing world is the advent of the smartphone, says FNB.
FNB's mobile money solution has shown strong growth since its inception in 2009, the bank says.
Industry optimism and the imminent re-launch of M-Pesa indicate mobile money has its place in the South African sun.
Non-FNB customers can now use FNB's Banking App via eWallet, which requires only a valid South African cellphone number.
The bank's cellphone banking customers can now do their banking while scouting the world of Facebook.