Zamp review
A broad sales-tax automation platform with calculation, filing, and managed compliance.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Zamp is a managed sales-tax compliance platform for growing digital businesses, including e-commerce, SaaS, and digital services companies. It combines rooftop-accurate tax calculation, real-time address validation, product-level taxability rules, nexus monitoring, registrations, filing, remittance, notice management, and audit support. Its web and API access suit teams that need either an operational compliance service or custom tax workflows embedded in their own products.
The plan structure covers different stages of tax assessment and ongoing compliance. Free includes one-time nexus analysis, historical liability exposure estimates, product taxability review, a 30-minute expert consultation, and a rate-limited API sandbox. Assess and diagnose adds one-time nexus and product taxability assessments, historical liability analysis, expert consultation, and an API sandbox environment. The U.S. tier adds calculations, nexus monitoring and registration, automated filing and remittance, notice management, and dedicated U.S. tax expertise. U.S. + Canada includes those U.S. capabilities plus Canadian GST, HST, PST, and QST calculations, registrations, filing, reporting, and cross-border tax expertise. A 30-day trial is available, while the pricing model is contact sales.
Platform fit is a major strength. Zamp integrates with Shopify, BigCommerce, Adobe Commerce, WooCommerce, Stripe, Amazon, eBay, Etsy, QuickBooks Online, Xero, NetSuite, Microsoft Business Central, Chargebee, Cin7, and Checkout Champ. The API supports calculations, transactions, address validation, registrations, and filings. Businesses seeking automated U.S. or Canadian sales-tax operations should consider Zamp, especially when managed filing, notices, and audit support matter. Teams wanting a self-serve paid checkout or compliance coverage outside its supported tax scope should compare alternatives.
Zamp pros and cons
- Where it wins
- Covers 13,000+ jurisdictions with rooftop-accurate calculations
- Automates nexus monitoring, registration, filing, and remittance
- Connects with major commerce, accounting, ERP, and billing platforms
- Where it doesn't
- Paid plans use a contact-sales pricing model
- The API sandbox is rate-limited and limited to 30 days
- Focuses on sales-tax and related Canadian tax compliance
Zamp fact sheet, pricing and score →
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