Sales tax, VAT & GST
United StatesCanada
Small businesses
About Zamp
About page: 3165 Center St., Unit 2, Miami, FL 33133 — roster Miami confirmed. Founder Rohit Bhadange. Plans Free / U.S. / U.S. + Canada feature matrices published; no fixed $ by state or per filing (sales scopes). Zamp Commitment covers penalties/interest if Zamp-managed calc/filing causes them.
Metrics conflict across pages: about cites $300M+ remitted / 100K+ on-time filings; homepage $400M+ / 150K+ — keep source-specific. Secondary directories sometimes say NY HQ — use official Miami address.
AI-powered return prep & notice classification; Apr 2026: AI agents with tax/legal pros. Not roster-flagged AI-native.
Highlights
- Free assessment/sandbox; U.S. and U.S.+Canada managed plans
- Rooftop-accurate geospatial calculation
- Penalty/interest commitment on Zamp-managed errors