Diane Colbert

About Diane Colbert

Senior‑level indirect tax leader with deep expertise overseeing U.S. and Canadian Sales & Use Tax compliance, audit defense, voluntary disclosures, and tax technology across complex, multi‑entity organizations.I currently own enterprise indirect tax functions supporting multi‑jurisdictional operations, partnering closely with Finance, Accounting, Legal, and business leadership to manage risk, improve compliance accuracy, and modernize tax processes. My background spans SaaS and large corporate environments, with hands‑on experience implementing and optimizing tax engines including Vertex and Avalara.Throughout my career, I’ve led teams, advised on mergers and acquisitions, managed state and provincial audits, and driven process improvements through automation and outsourcing. I’m known for combining strong technical judgment with practical business partnership, clear communication, and a collaborative leadership style.Core focus areas include:• Indirect / Sales & Use Tax Strategy & Governance• Multi‑Jurisdictional Compliance (U.S. & Canada)• Audit Defense, Voluntary Disclosures & Controversy• Tax Technology & Automation (Vertex, Avalara)• FAS 5 Exposure Analysis & Risk Management• M&A Support & Integration• Team Leadership, Hiring & MentorshipOpen to Senior Manager or Director‑level opportunities in enterprise or growth‑stage organizations. Hybrid (Jacksonville, FL area) or fully remote.

Experience

1. Principal, Sales Tax

   Dun & Bradstreet

   Jul 2025 — Present · Jacksonville, FL, US

   Own the enterprise indirect tax function, overseeing U.S. and Canadian Sales & Use Tax compliance, tangible personal property filings, and business licenses- Serve as primary point of contact for all indirect tax audits, managing inquiries, responses, and resolution with taxing authorities- Lead exemption certificate management strategy, strengthening documentation standards and audit readiness- Provide advisory support to business units on taxability, transactions, and operational initiatives- Partner cross‑functionally with income tax, accounting, and legal teams to align compliance and risk management.

Education

• Adelphi University

  BBA, Management

• St. John's University, The Peter J. Tobin College of Business

  MBA, Finance

Skills

• Internal Controls
• Tax Returns
• Finance
• Tax
• Internal Audit
• Sales Tax
• Financial Analysis
• Tax Preparation
• Accounting
• Accounts Receivable
• Sarbanes-Oxley Act
• Auditing
• Financial Reporting
• Account Reconciliation
• General Ledger
• Income Tax