State Income Tax Services
Specialized state income tax services designed to help private equity firms and portfolio companies manage multi-state compliance, reduce exposure, and support complex transactions.
STATE INCOME TAX SERVICES
Strategic, Multi-State Income Tax Advisory
Insight Tax Advisors provides state income tax services designed to support private equity firms and their portfolio companies operating across multiple jurisdictions. We help organizations manage compliance obligations, evaluate filing positions, and address exposure throughout the investment lifecycle.
Our team brings deep experience with complex entity structures, combined and consolidated filings, apportionment, and transaction-driven state income tax considerations. We work closely with internal tax and finance teams to deliver practical guidance that supports both deal execution and ongoing compliance.
Portfolio Company Income Tax Return Review
Review state income tax returns prepared by third-party firms to identify filing risks, inconsistencies, and missed tax-saving opportunities.
Combined & Consolidated Filing Analysis
Assess entity structures and state rules to determine proper combined or consolidated filing positions and avoid unintended exposure.
PE Management Company Filings
Analyze state filing obligations for PE management entities, including nexus, unitary considerations, and carried interest reporting.
Apportionment & Sourcing Analysis
Evaluate state apportionment methodologies and sourcing positions to ensure defensible reporting and minimize multi-state exposure.
Voluntary Disclosure Agreements
Negotiate VDAs to limit lookback periods, penalties, and interest while resolving historical state income tax liabilities efficiently and strategically.
Who We Support
We partner with internal teams to deliver state income tax compliance solutions that scale alongside business growth and increasing complexity.
Portfolio Companies
Controllers
Finance Teams
Internal Tax Departments
Private Equity Operating Teams
Why Insight for State Income Tax
Senior-level professionals oversee all compliance engagements
Experience managing multi-state compliance environments
Processes designed for accuracy, consistency, and scalability
Alignment with transaction and consulting advisory services
Support tailored to private equity-backed organizations
STATE INCOME TAX LEADERSHIP
Let’s Discuss Your State Income Tax Strategy
Our state income tax professionals bring deep technical expertise and a practical approach built through years of advising private equity firms and their portfolio companies. We support accurate, compliant, and defensible state income tax positions across complex, multi-state environments.
Whether supporting ongoing compliance, evaluating filing positions, or addressing state income tax exposure, our team works closely with internal finance and tax teams to align tax strategy with business operations and investment objectives.
Jim Kelleher
Managing Director & Founder
View Full Bio
Portfolio Company Income Tax Return Review
Insight Tax Advisors reviews state income tax returns prepared by third-party compliance firms to identify filing risks, inconsistencies, and missed tax-saving opportunities. Our reviews focus on accuracy, alignment with state-specific rules, and consistency across jurisdictions.
We assess filing positions, nexus assumptions, apportionment methodologies, and supporting workpapers to uncover potential exposures or refund opportunities. This independent review provides portfolio companies and sponsors with greater confidence in reported positions and financial outcomes.
Combined & Consolidated Filing Analysis
Determining the proper combined or consolidated filing position is critical for multi-entity, multi-state organizations. Insight Tax Advisors evaluates entity structures and applicable state rules to determine appropriate filing methodologies and identify unintended exposure.
Our analysis considers unitary relationships, ownership structures, and state-specific requirements to ensure entities are included or excluded correctly. This helps avoid overpayment, underreporting, and compliance risk stemming from improper filing positions.
PE Management Company Filings
Private equity management companies often face complex state income tax filing obligations separate from portfolio companies. Insight Tax Advisors analyzes state filing requirements for management entities, including nexus, unitary considerations, and carried interest reporting.
We help management companies understand where filings are required, how income should be reported, and how state rules apply to management fee and incentive income. Our work supports accurate reporting and reduces exposure across jurisdictions.
Apportionment & Sourcing Analysis
Apportionment and sourcing rules vary widely by state and can significantly impact tax liabilities. Insight Tax Advisors evaluates apportionment methodologies and income sourcing positions to ensure reporting is accurate and defensible.
Our analysis focuses on identifying inconsistencies, addressing service and intangible sourcing issues, and minimizing exposure in high-tax jurisdictions. We help companies adopt positions that align with state law while reducing multi-state risk.
Voluntary Disclosure Agreements
For companies with historical state income tax exposure, voluntary disclosure agreements (VDAs) provide a structured path to compliance. Insight Tax Advisors negotiates VDAs to limit lookback periods, reduce penalties and interest, and resolve prior-year liabilities efficiently.
We manage the VDA process from exposure analysis through negotiation, filing, and post-agreement compliance. Our experience across jurisdictions helps clients achieve resolution while protecting value and minimizing disruption.

