Family, Trust, and Tax Solutions Since 1985

Get to Know Firstax

Rooted in Dallas–Fort Worth, Firstax is led by Enrolled Agents Daniel and David Hartsock, bringing generations of local expertise and personal care to every client.

Our Story: A Family Tradition of Service

From One Office to a Community of Clients Across DFW

Founded in 1985, Firstax began as a small, family-run practice built on a commitment to service and integrity. Today, brothers Daniel and David Hartsock continue that tradition, guiding clients from all walks of life through tax season and beyond. With over 50 years of combined experience, our family has helped thousands of individuals and businesses in Prosper, Frisco, Aledo, Bedford, and the broader Dallas–Fort Worth area navigate tax complexities with confidence. Through every change, our mission remains the same: to make taxes less stressful and to be a reliable, friendly resource in our community.

We're here.  You’ll never feel like just another file in our system.

Meet the Team Behind Your Tax Confidence

Personal Introductions From Daniel & David Hartsock

Daniel Hartsock, EA, and David Hartsock, EA, are brothers and co-owners of Firstax, each licensed by the IRS as Enrolled Agents. Their dedication to accuracy and personal support has earned client trust for decades—whether it’s handling intricate audits, tax planning, or helping clients catch up on years of missed filings. Daniel is known for his attention to detail and his approachable nature, always finding solutions for even the toughest tax scenarios. David specializes in business advisory and enjoys helping clients understand the bigger financial picture; outside of work, he’s active in local volunteering and enjoys coaching youth sports.

Meet the Team

Bilingual accountants committed to your success

Our team combines decades of experience in accounting and tax services with the ability to communicate clearly in English and Spanish (Italian coming soon). We work closely with each client, focusing on clarity, respect, and personalized solutions.

Our Philosophy: Tax Help Without Judgment

Empathy, Discretion, and Relationships That Last

At Firstax, we believe every client deserves to be treated with dignity, regardless of their tax history or current situation. Our mission is to offer clear, honest guidance in a way that removes fear, confusion, and embarrassment from the tax process. We handle every case—whether it’s routine filing, IRS representation, or resolving years of unfiled taxes—with empathy, respect, and total confidentiality. This approach has allowed us to retain 95% of our clients year after year, building lasting relationships rooted in trust and genuine care.

How We Work: Personal Support, Modern Tools

A Simple, Secure Process for DFW and Beyond

Working with Firstax is straightforward—our team guides you step by step, whether you prefer in-person meetings or secure virtual appointments. Here’s what you can expect: