Sales tax questions, answered straight

Yes. Peisner Johnson opened in 1992 and became The Sales Tax People when it officially joined Ampleo in early 2025. Same team, same work.

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Established businesses that sell into many states, including ecommerce, SaaS, retail, manufacturers and distributors, and multi-state service providers. We also support CPAs and accounting firms whose clients need sales tax help.

No. Your CPA stays your CPA. Multi-state sales tax sits outside a lot of CPA practices, so we work alongside yours on the other states.

Often, yes. Keep the software. It files on the settings it's given, and a specialist checks those settings: which states you're registered in, which products it taxes, and the years before you turned it on.

Since South Dakota v. Wayfair in 2018, a state can require you to collect based on your sales into it, by revenue or transaction count, even with no physical presence. Each state sets its own thresholds. For a quick check, try our nexus calculator. For the full picture, a multi-state nexus study takes about 9 days on average (depends on system access).

States can look back at sales from before you registered. If you never registered, many states can look back further, because the clock often doesn't start until you file. Interest can keep adding up the longer it sits, so a specialist sizes those years with you and flags what's worth fixing first.

A VDA lets you come forward to a state about past sales tax on your own terms, usually with a shorter lookback period. If you had obligations in states where you never registered, a VDA is often the cheapest way to fix it. It takes care to approach the right states in the right order, and we'll tell you on the first call whether one fits.

Yes. We do sales tax due diligence on either side of a deal, so you know the exposure before it affects price, timing, or an escrow holdback. For the wider deal, Ampleo's transaction advisory and valuation teams are part of the same family.

Yes. We handle sales tax across the entire United States and Canada. We do nexus studies in all 50 states and work in all 13,000+ state and local jurisdictions.