State and local tax laws can be challenging. The complexity and persistent changes in the state and local laws and regulations can create confusion. At Withum, we are relentless in our efforts to keep you up-to-date on the latest changes— create new opportunities before they may turn into challenges.

Turning Challenges into New Opportunities

Planning and Consulting

  • NEXUS Studies
  • Apportionment Analysis
  • Sales Tax Studies
  • Transactional Conformity with Federal Laws

Tax Compliance

  • Multistate Payroll
  • Sales and Use
  • Corporate Tax Reporting
  • Individual Tax Reporting

Audit Defense and Representations

  • Credits and Incentives
  • Voluntary Disclosures


James A. Bartek


Whippany, NJ