About us

Who We Are

Advanced Tax Team is a one-stop shop for individuals and businesses. From tax preparation to tax resolution and everything in between, we offer our clients a wide variety of services. That includes tax debt negotiations, bookkeeping, tax return filings, and much more. What sets us apart from our competitors is our exceptional client approach. Our friendly staff treats each case as if it were our own. We work carefully with our clients to resolve their back tax problems and empower them with strategies to avoid future tax issues.

Mission & Vision

To provide taxpayers with a tax and bookkeeping firm they can depend on for life. To treat each client like family and to bring peace of mind in the area of personal and business finances.

Meet the Team

We are a team of dedicated professionals, ready to do whatever it takes to exceed our clients’ expectations.

 Justin Shields

Justin Shields

CEO - Operations

After over 15 years in the tax industry, Justin Shields has developed an innate focus on the client’s overall experience. That includes accuracy in the work and keeping clients informed on the progress of their files. Justin‘s passion for taxation is the client’s results, as well as their overall experience, from innovative solution strategies to knowledgeable and friendly service.

Concepcion Katherine Cosio

Concepcion Katherine Cosio

Enrolled Agent

Katherine is a driven tax professional with a strong background in preparing diverse tax returns for individuals, small businesses, and corporations. She holds a Master’s Degree in Business Administration with concentration in Taxation. Additionally, she is an IRS Enrolled Agent licensed to represent taxpayers before the Internal Revenue Service.

Salvador Agito

Salvador Agito

Tax Relief Specialist

Salvador is a dedicated law graduate who is set to pursue his bar in 2025. Meanwhile, he has been actively preparing tax returns for individuals and businesses. Over the years, Salvador has developed a deep understanding of Tax Resolution, delving into the complexities of tax laws to assist clients in achieving optimal outcomes. His passion lies in guiding clients through the intricacies of tax regulations, ensuring they benefit from the most favorable tax liabilities available to them.

Brittney Donahue

Brittney Donahue

Administrative Assistant

Brittney Donahue is a dedicated team member with a degree in accounting and 8 years of experience as a tax professional. She’s an efficient multitasker and an adept problem solver. So, she enjoys the chaos of tax season every year. Her special talent lies in paying attention to detail while keeping the big picture in focus.

Stephanie Jones

Stephanie Jones

Client Relations

Stephanie Jones has been committed to excellence in client relations for over 13 years. She has two associate’s degrees and a unique blend of organizational and interpersonal skills. Stephanie goes above and beyond to keep things in order behind the scenes. She’s a client favorite! She looks forward to building a great relationship with more of our clients.

Jenna Mendez

Jenna Mendez

Intake Specialist

Jenna Mendez holds a master’s degree and has been delivering excellence in client relations for over 10 years. She has a flair for evaluating the needs of others and coordinating further action. Our clients benefit from her natural aptitude for identifying priorities. She eagerly awaits meeting our new clients.

What others say about us

Advanced Tax Team made it easy by filing back tax returns and working with the IRS on my behalf. They settled a payment plan with the IRS that I can actually afford. They’re my tax firm for life.

I called Advanced Tax Team when I received an IRS notice. They prepared all my back tax returns. I owed a lot, but they worked with the IRS and significantly lowered my debt. Thank you, Advanced Tax Team!

I’m so glad I found Advanced Tax Team. I owed back taxes and the IRS started taking them from my paycheck. Advanced Tax Team got them to stop the garnishment immediately, then negotiated with the IRS to reduce what I owed.

My business got behind on payroll taxes. The IRS could’ve taken everything I worked my whole life for. I called Advance Tax Team. They worked with the IRS to keep it open and running. I’m so grateful!

*Results May Vary