Business & Tech RRA says billing machines increasing tax base by Jean de la Croix Tabaro September 8, 2014 by Jean de la Croix Tabaro September 8, 20148:31 am Barely six months after the introduction of Electronic Billing Machines, Rwanda revenue authority (RRA) says the results are impressive. Speaking at this year’s tax payers’ day celebration on Saturday, the… 0 FacebookTwitterPinterestEmail