No matter how daily backups are taken – yes, daily as anything less than daily is poor business management – get them checked every six months or so by your newsagency software company. This should be a free service.
There are newsagents in Queensland right now who do not have access to current data either because there were not backing up daily or they had not had their backup checked to ensure the backup was completing.
Losing business data can affect your tax situation, your own financial situation and or what you could sell the business for if you decide to sell.
Contact your software company and arrange to have your backup checked.