Mierendorf & Co. is excited to announce a new web portal service to be launched for our clients. Onvio, powered by Thomson Reuters, provides next-generation file security with multi-factor authentication to further protect your tax and financial information. An easy dashboard interface allows you to view “To Do” and “Completed” tasks, access documents and upload requested items. Whether from your desktop or handheld device, Onvio, will provide you fast, secure access. Please update your preferred email address if needed.