Our People
Senior tax professionals — bringing deep technical expertise, commercial judgment, and a genuine commitment to client outcomes.
Experience You Can Rely On
OmniTax Professionals is comprised of tax practitioners with significant experience in "Big 4" accounting firms, applying a fresh, independent approach to meeting their clients' needs. Our team brings together specialists across every major area of Australian tax law.
Guided by Three Managing Directors
OmniTax Professionals is led by Abhi Aggarwal, Allan Neilsen, and Stephanie Lam — each with deep "Big 4" experience and decades of combined tax advisory, M&A, and compliance expertise.
Together they set the firm’s direction: senior-led delivery, commercial judgement, and "hands-on" involvement on the issues that matter most to our clients.
Allan Neilsen · Stephanie Lam · Abhi Aggarwal — Managing Directors
Meet the Full TeamMeet the Team
Click any profile to learn more about our team members.
Team profiles are being finalised. Please check back soon.
Join Our Network
We are always interested in connecting with senior tax professionals who share our commitment to independence, excellence, and client-first advisory.
Whether you are an experienced practitioner looking for a new environment, or a specialist seeking collaboration opportunities, we would welcome a conversation.
View Opportunities- Genuine independence — no institutional conflicts
- Direct client relationships at the highest level
- Work on complex, high-value engagements
- Flexible arrangements to suit senior practitioners
Ready to Talk Tax?
Schedule a consultation with our team. Whether you're facing a complex transaction, a compliance requirement, or a governance challenge — we're here to help.