Our story

Our story

— A Foundation Built on 25 Years of Trust

We replace rigid corporate templates with deeply personalized financial support. Backed by twenty years of proven, real-world experience.

Tatiana Dudley

Founder & managing partner

Tatiana Dudley

Founder & managing partner

Tatiana built this firm on a simple but powerful belief: tax compliance should never be a source of anxiety for business owners. With over 25 years of expertise specializing in business entities and international tax, she saw firsthand how standard, reactive accounting leaves entrepreneurs confused and overwhelmed. Instead of just recording financial history, Tatiana partners with her clients to help them truly understand the tax implications of their decisions, transforming complex regulations into a clear, predictable strategy that actively supports their growth.

As a professional authorized to represent taxpayers directly before the IRS, Tatiana acts as a dedicated shield between you and the tax authorities. Whether you are navigating an unexpected audit or need proactive compliance to avoid one entirely, she takes the heavy administrative burden completely off your shoulders. She also brings specialized expertise to uniquely complex situations—from guiding US taxpayers working overseas to helping non-US founders manage their American business activities with total confidence and absolute peace of mind.

365

365

Days of proactive, year-round guidance — not just during tax season.

Days of proactive, year-round guidance — not just during tax season.

365

Days of proactive, year-round guidance — not just during tax season.

1:1

Direct, personalized partnership, carefully tailored to your business goals.

1:1

Direct, personalized partnership, carefully tailored to your business goals.

1:1

Direct, personalized partnership, carefully tailored to your business goals.

Our team

Our team

The People in Your Corner

The People in Your Corner

The People in Your Corner

Alexander

IT & Security Lead

Nina

Payroll & State Tax Specialist

Nina

Payroll & State Tax Specialist

Anna

Sales Tax & Payroll Specialist

Anna

Sales Tax & Payroll Specialist

Valeriya

Multi-state tax advisor

Tetiana

Accounting & Administration Lead

Tetiana

Accounting & Administration Lead

Katherine

Communications Coordinator

At large agencies, your business is often passed down to inexperienced clerks or automated software. We operate differently. When you work with us, your tax strategy is actively managed by this core team of specialists. You always have a direct line to the people in your corner.

At large agencies, your business is often passed down to inexperienced clerks or automated software. We operate differently. When you work with us, your tax strategy is actively managed by this core team of specialists. You always have a direct line to the people in your corner.

TDX Group

TDX Group

Est. 2001 — Seattle, WA

Request a Consultation

We are currently accepting new client inquiries for the 2026 tax season.

Direct Contact

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Request a Consultation

We are currently accepting new client inquiries for the 2026 tax season.

Direct Contact

By submitting, you agree to our Terms and Privacy Policy.

Request a Consultation

We are currently accepting new client inquiries for the 2026 tax season.

By submitting, you agree to our Terms and Privacy Policy.