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Sales & Use Tax Consulting

Sales and use tax rules change fast—and states are enforcing them aggressively. We help you design a practical, defensible compliance strategy: where you must register, what’s taxable, how to configure your systems, and how to respond to notices or audits.

What we do:

  • Nexus analysis (physical/economic/marketplace; home‑rule jurisdictions)
  • Registration strategy and footprint optimization (where to register, when, and how)
  • Product/service taxability reviews and written guidance
  • System configuration: QBO/ERP/POS/ecommerce tax codes, rate mapping, exemptions
  • Exemption and resale certificate programs (collection, storage, testing)
  • Voluntary disclosure agreements (VDAs) and look‑back remediation
  • Notice response, penalty/interest abatement requests
  • Audit readiness and defense (data requests, sampling, reconciliations)
  • Process design and controls (close checklist, reconciliations, calendar)

When you need consulting (beyond routine filings):

  • You sell in multiple states or through marketplaces and aren’t sure where you must file
  • You’re launching new products/services and need taxability answers
  • You received a nexus questionnaire, notice, or audit letter
  • You’re entering/leaving states, restructuring entities, or acquiring a company
  • Your systems don’t match filed returns (recon breaks, rate errors, exemptions)

Our process:

  • Discover: sales channels, systems, states, products/services
  • Analyze: nexus, taxability, and risk; quantify exposure and options
  • Recommend: step‑by‑step plan (registrations, VDAs, configuration)
  • Implement: filings/registrations, system setup, cert program, training
  • Defend/maintain: notices, audits, and periodic taxability/nexus checkups

Deliverables you'll receive:

  • Written nexus and taxability memo with citations
  • Registration/footprint plan and implementation checklist
  • Configuration guide (tax codes, mapping, exemptions) for your systems
  • VDA/audit document package and timeline
  • Ongoing compliance calendar and reconciliation template

Who we serve:

  • Ecommerce and marketplace sellers (Shopify, Amazon, Etsy, etc.)
  • SaaS and service businesses with multi‑state customers
  • Retail/wholesale and manufacturers with mixed footprints
  • Nonprofits with occasional taxable events

Systems we work with:

QuickBooks Online, common POS/ecommerce platforms, and (optionally) Avalara/TaxJar data prep. Secure client portal for document exchange.

Need a defensible sales and use tax strategy—or help with a notice or audit? Contact us to get started or book a quick consult.

Why Choose Cloonan CPA?

  • Personalized Attention for Every Client

    You work directly with William Cloonan, CPA—no call centers, no junior staff. Every client gets tailored advice and responsive support.
  • Virtual CPA Services, Nationwide Reach

    Efficient, secure, and convenient service for small businesses across the U.S.—no matter where you’re located.
  • Small Business Specialist

    With 7+ years of experience serving entrepreneurs and small business owners, we understand your unique challenges and goals.
  • Trusted Experience

    A proven track record of helping clients minimize taxes, stay compliant, and grow their businesses with confidence.

Ready to Get Started?

Schedule a free consult, reach out with questions, or access your secure client portal.