State and local tax compliance,automated by AI
Nexus studies, VDAs, audit defense, taxability, returns, and analytics — all in one platform, built on best practices.
Built for modern tax compliance
50+
States Covered
2000+
Product Codes
24/7
Platform Access
99.9%
Uptime SLA
Comprehensive Platform
Everything you need forstate and local tax compliance
One platform powering advisory firms and the businesses they serve.
- Automated Nexus Studies
Identify tax obligations across all states with AI-powered analysis of business activities.
- VDA Management
Streamline voluntary disclosure agreements with built-in state requirements and templates.
- Product Taxability
Access 2000+ product classifications across all jurisdictions for accurate tax determination.
- Sales & Use Tax Audits
Comprehensive audit defense with line-level analysis and automated workpaper generation.
- Compliance Tracking
Monitor deadlines, track exposure, and maintain audit-ready documentation in real time.
- Tax Return Summaries
Automated return preparation with detailed summaries and filing support across all jurisdictions.
Built for modern tax teams
Fast Implementation
Get started in minutes, not months
Enterprise Security
SOC 2 compliant infrastructure
Team Collaboration
Add unlimited team members
Audit Ready
Maintain complete documentation
Ready to modernize yourtax compliance?
Transform how you manage state and local taxes with modern technology built for today's needs.
Advisory Firms
See how L3i can help you scale your tax practice and deliver more value to clients.
Schedule a DemoFor Businesses
Get matched with a trusted advisory firm to manage your tax compliance through L3i.
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