Sales Tax Nexus Cleanup
Most small multi-state e-commerce sellers have unknowingly crossed economic nexus thresholds since Wayfair and have no idea they owe back sales tax; a diagnostic-and-cleanup service that finds the exposure, files voluntary disclosure agreements before a state audits them, and sets up ongoing compliance turns a real, growing compliance risk into a high-margin consulting engagement.
The structural driver is unambiguous: Wayfair (2018) created real economic nexus exposure for remote sellers, and states are actively pursuing it. Real firms (Peisner Johnson, plus the consulting arms of Avalara and TaxJar) already prove the model works. Competition exists from those larger players and from CPA firms adding SALT services, but boutique VDA/cleanup work for small and mid-size sellers is underserved because larger firms chase bigger clients. Per-engagement margins are excellent since the main cost is the practitioner's own time plus a small software/subcontractor cost, and the business scales by hiring additional preparers or licensing the diagnostic methodology.
The sale isn't 'sales tax compliance' — it's 'find out before the state does.' Lead with a low-cost nexus exposure assessment (a few hundred dollars) that quantifies the client's specific back-tax and penalty risk; that number is what turns a curious prospect into a paying VDA client. States often waive penalties (and sometimes look-back periods) for sellers who come forward voluntarily, which is the core value proposition to sell.
Demand spikes around year-end/January tax planning and again in Q1 as prior-year sales data becomes available and sellers assess whether they crossed thresholds.
Suits you if
- ✓You have or are willing to build real state and local tax (SALT) knowledge, ideally with a CPA/EA credential or a licensed partner
- ✓You're comfortable with detailed, deadline-driven paperwork across multiple state agencies
- ✓You want a project-based business with schedulable client work rather than always-on availability
Skip it if
- ✕You have no accounting/tax background and aren't willing to partner with a CPA or attorney for licensed work
- ✕You're not comfortable with the liability of advising clients on tax exposure and filings
- ✕You need fast, high-volume transactional work rather than a smaller number of high-value engagements
| Units | Revenue range | Note |
|---|---|---|
| 5 | $22,500–$30,000 | Early validation phase, part-time alongside other work |
| 15 | $67,500–$90,000 | Sustainable solo full-time practice |
| 30 | $135,000–$180,000 | Requires hiring a second preparer or credentialed partner |
Skills: Core skills are state and local tax research, meticulous documentation, and consultative selling to nervous business owners who just learned they may owe back taxes. Credentialing (CPA, EA, or CMI) isn't always legally required for diagnostic work but strongly improves trust and is required in some states for filings.
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