Zamp provides sales tax compliance software for registrations, calculations, filing, and remittance.
Zamp is a fully managed U.S. sales tax service that handles filings, registrations, notice responses, and nexus tracking for Shopify and multi-channel brands. Best fit for brands selling across many states where finance teams are losing hours to tax work or risking penalties from missed registrations.
What Zamp does for Shopify brands
- Managed filings, registrations & notice responses cut finance time 75-95%
- Proactive nexus monitoring prevents penalties, interest & back-tax liability
- Replaces Avalara, TaxJar, Numeral or manual accountant engagements
- Real-time Shopify order sync with rooftop-accurate tax across channels
- No per-transaction fees, flat managed pricing
Overview
Zamp sells sales tax compliance software with a managed service for U.S. and Canadian sales tax. It handles tax calculations, nexus monitoring, registrations, filings, remittance and state notices, so a merchant does not have to run these tasks in-house.
For Shopify brands
- Zamp connects to Shopify through a listed integration, so sales data can feed its tax calculations and filings.
- Zamp prepares and files sales tax returns, remits payments to states and handles state notices, with the brand's team reviewing as needed.
- Zamp monitors sales by state and alerts the brand at 80% of a state's threshold, then handles the registration paperwork.
How it works
The brand connects its sales platform and Zamp assigns a specialist who handles data migration, account setup and existing state registrations. Zamp then calculates tax, monitors nexus, registers, files and remits, and manages notices. Brands choose a done-for-you model or a done-with-you model where the team reviews and approves prepared work.
- Built for
- Growing small-to-mid-size digital businesses, including e-commerce, SaaS and digital services companies.
- Pricing
- Three plans: Free (nexus assessment, taxability review, expert consultation and API sandbox), U.S., and U.S. + Canada. The U.S. and U.S. + Canada plans are quoted through sales, with an all-inclusive annual contract and no per-transaction fees.
Products
- U.S. Sales Tax Tax calculations, nexus monitoring, registrations, filing, remittance and notice management across U.S. states and territories.
- Canada Sales Tax GST, HST, PST and QST calculations, registrations, threshold monitoring and filings.
- Exemption Cert Management Handling of exemption and resale certificates.
- White-label Service Zamp's sales tax service offered under a partner's brand.
- Sales Tax API API for tax calculations, with a free 30-day sandbox trial.
Integrations
Buyer notes
- Pricing for paid plans is by contacting sales; contracts are annual.
- Support is by phone at 1-866-438-9267 or email at support@zamp.com.
- AICPA SOC2 compliance is in progress.
- A work email is required to sign up (no Gmail or Yahoo).
From Zamp's own site and Shopify App Store listings, as of 2026-10-30.
How much does Zamp cost?
Three plans: Free (nexus assessment, taxability review, expert consultation and API sandbox), U.S., and U.S. + Canada. The U.S. and U.S. + Canada plans are quoted through sales, with an all-inclusive annual contract and no per-transaction fees.
