Operational Accounting Systems (o-a-sys) provide customers with integrated business software and web solutions. Through our accredited experts we support, train, develop and manage the complete software solution for all business needs.
To get the right solution, o-a-sys take time to understand your business and the processes you need to manage, creating long term relationships with customers and helping you to do the same.
What's New!
01/01/2012
Join us on 31st January 2012 to see the payroll changes for the 2012/13 tax year...
07/11/2011
Fending off competition from Sage, Advanced Business Solutions and Qtac Payroll Products.
07/11/2011
Ease of use, value for money and overall user satisfaction rank Pegasus Software as one of the top two suppliers in Payroll World’s annual Software User Satisfaction Survey.


