Practical 2026 multistate sales tax rules for mapping nexus, sourcing, exemptions, filings, and audit risk
5 sections · 10 lessons
Define the sales footprint, then determine physical and economic nexus, marketplace collection responsibility, and the registration steps that turn liability into an active filing setup.
3 lessonsApply sourcing rules and state rate treatment to representative shipments, then build a defensible taxability matrix for goods, services, and software.
2 lessonsValidate exemption and resale certificates, then compute monthly use tax accruals from purchase data and fixed assets.
2 lessonsPrepare the filing cycle, reconcile liabilities to the general ledger, and complete the return package and remittance process.
2 lessonsEvaluate audit-ready records, voluntary disclosure options, and the penalty and interest exposure tied to unresolved exposure.
1 lessonStarting with how a client’s sales footprint turns into states to monitor, this course builds a working view of multistate sales and use tax compliance for small and mid-size businesses. It focuses on the decisions accountants make in real files: where nexus starts, who collects through marketplaces, what is taxable, how certificates and use tax are handled, and how returns, audits, and penalties are defended. By the end, learners have a practical framework for current 2026 U.S. compliance work.
The course covers nexus analysis, marketplace facilitator rules, origin and destination sourcing, and state-by-state taxability of goods, services, and software. It also covers exemption and resale certificates, use tax accruals, registration and filing cycles, return preparation and reconciliation, audit response, voluntary disclosure agreements, and penalty exposure.
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Three findings from decades of learning research shaped how every Fenzo lesson is built.
Average pass rate · Freeman et al., PNAS 2014
What the science says
Students in lecture-only classes are 1.5× more likely to fail.
How Fenzo does it
Every Fenzo lesson is interactive. No passive reading or watching, ever.
You work through itAI does it for you
Skill retention over time · with vs. without practice
What the science says
Offloading thinking to AI erodes the very skills you’re trying to build.
How Fenzo does it
Fenzo makes you do the thinking — guided, but never done for you.
Retrieval practiceRe-reading
Long-term recall · retrieval vs. re-reading
What the science says
Recalling information beats re-reading it for building durable understanding.
How Fenzo does it
Lessons weave in quizzes and recall prompts, so it sticks.