Tax compliance takes more than the right tools.It also takes the right experience.
Tax CSA is the expert-led team that closes the gap between your software and real compliance.
Certified Implementation Partner — Avalara
100+ Years Combined Sales Tax Experience
100% US-Based, Expert-Led Team
Serving Start-ups to Fortune 1000
Most companies bought tax software expecting compliance.
What they got was a powerful tool that takes real expertise to run well - and that expertise usually isn't sitting inside the company.
The platforms are more capable than ever. But the rules keep multiplying, audits keep happening, and the gap between what your software can do and what your team has bandwidth to handle keeps widening. Tax sits with one overloaded person. Certificates expire. States send notices. And nobody fully owns the in-between.
That gap is exactly what Tax CSA exists to close.
Core Services
Expert help across every stage of your compliance journey.
Tax Technology
Tax CSA implements, recalibrates, and supports leading tax platforms including sales tax calculation engines, returns filing, exemption certificate management, and use tax. From choosing the right tax engine to getting more from the one you already have, we help companies make their tax technology actually work.
Tax Technology
Tax CSA implements, recalibrates, and supports leading tax platforms including sales tax calculation engines, returns filing, exemption certificate management, and use tax. From choosing the right tax engine to getting more from the one you already have, we help companies make their tax technology actually work.
Advisory & Registrations
Sales tax questions rarely come with simple answers. Tax CSA helps companies navigate nexus, registrations, voluntary disclosure agreements (VDA), marketplace requirements, audits, and the everyday compliance questions that come with running a complex business.
Advisory & Registrations
Sales tax questions rarely come with simple answers. Tax CSA helps companies navigate nexus, registrations, voluntary disclosure agreements (VDA), marketplace requirements, audits, and the everyday compliance questions that come with running a complex business.
Exemption Certificate Management
Is the certificate valid? When does it expire? Who's tracking it? Tax CSA manages your exemption certificates end-to-end from requesting, validating and renewing certificates, to cleaning up existing records and keeping them organized. Accurate, audit-ready documentation when you need it.
Exemption Certificate Management
Is the certificate valid? When does it expire? Who's tracking it? Tax CSA manages your exemption certificates end-to-end from requesting, validating and renewing certificates, to cleaning up existing records and keeping them organized. Accurate, audit-ready documentation when you need it.
What makes Tax CSA different.
Insider knowledge, working for you.
Former Avalara employees with 100+ years of combined experience — expert-led, US-based, and deeply familiar with the platforms your business runs on. The people who helped build today's leading tax technology now use that knowledge to close your compliance gaps.
Compliance you can defend.
Clean records, accurate exemptions, and the right platform configuration — so when a state auditor calls, your team has answers, not a scramble. Tax CSA builds compliance programs that hold up under scrutiny.
Implementation and everything after.
White-glove service from day one through the long term. Tax CSA provides a dedicated US-based point of contact, hands-on support, and ongoing health checks — staying closely involved as your business grows and your compliance needs evolve.
“Tax CSA exists because there's a gap nobody else was filling. Companies bought the software. They hired the vendors. And then they were left to figure out the hard part on their own. We built this firm to be the proficient team that stays — the people who actually close the gap between what the tools can do and what the business needs.”
Meet The Team
Leadership
“Tax CSA exists because there's a gap nobody else was filling. Companies bought the software. They hired the vendors. And then they were left to figure out the hard part on their own. We built this firm to be the proficient team that stays — the people who actually close the gap between what the tools can do and what the business needs.”
Meet The Team
Deep expertise across the platforms your business already uses.
Trusted PartnersStrategic technology relationships that support tax compliance, exemption certificate management, and platform operations.
