TDX Group

TDX Group is a Seattle tax and accounting firm serving businesses and nonprofit organizations. It handles entity-formation paperwork, tax preparation and planning, payroll, bookkeeping, compliance, and IRS representation. Consultation requests are accepted by form, phone, or email, and the site says the firm serves clients in all 50 states. Tatiana Dudley founded the firm in 2001, with international tax among its specialties, but the site does not confirm service in Russian.