Client Portal DMA Client Portal – (Existing Clients) Access your tax documents and securely upload your paperwork and notices through our new Client Portal. Simply click the link above to get started. Send Us Your Files With Confidence – (New Clients) Secured by: SendThisFile Schedule an Appointment Newsletters Previous Articles Client Portal Retention Guides Check Your Refund Dedicated, Mindful and Accountable. DMA Accountancy Corporation1400 N. Harbor Blvd., Ste #605 Fullerton, CA 92835 Mon-Thur: 9 a.m.-5:30 p.m. | Fri: 9 a.m. to 4:30 p.m. (714) 462-5290 Translate Website Text How can we help you today? Name Email Address Company Name Subject Message Send