So, what is Diagnostax? For those of you who have known who we are for a long time, you might know Diagnostax as tax diagnostic software. More specifically, a system to identify all a client’s: tax advice needs, tax saving opportunities, allowances, incentives and reliefs. But things have evolved and we’re so much more than this now. We're all about helping you to build a sustainable way to grow and deliver your tax consultancy and tax advice services to your clients.