Sales tax is complex. Paying for it shouldn't be.

From first nexus to multi-jurisdiction complexity, invest in a partner that delivers accurate filings, fewer surprises, and real peace of mind as you scale.

Free
Best for teams who want clarity on tax exposure.
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Key features:
Nexus & exposure assessment
One-time nexus analysis
Historical liability exposure estimate
Jurisdiction-by-jurisdiction risk summary
Product taxability review
Taxability classification by product / service
State and country-specific rule application
Review of edge cases (e.g., mixed offerings)
Expert consultation
30-minute session with a senior sales tax professional
Review of current setup, risks, and recommended next steps
API sandbox access
Free, production-grade API trial environment
Test rates, taxability, and edge cases before go-live
Preloaded with all remote-seller state registrations
Rate-limited, 30-day sandbox with automatic cleanup
U.S.
Perfect for teams who need audit-ready compliance while scaling.
Contact sales
All the features of Free, and:
Rooftop-accurate tax calculations
Geospatial rate determination at the address level
Real-time address validation
Product-specific taxability rules
Proactive nexus monitoring & registration
Real-time threshold tracking by state
80% early-warning alerts
Automated state registrations and account setup
Ongoing obligation monitoring
Automated filing & remittance
AI-powered return preparation and submission
Direct ACH remittance to states
Early-filing discount capture
Automatic filing frequency management
End-to-End Notice Management
Daily state portal monitoring
AI-assisted notice classification
Expert response and resolution
Centralized, searchable notice archive
Dedicated U.S. tax expertise
Former state auditors and senior tax specialists
Support for complex scenarios (e.g., marketplaces, drop-ship, new SKUs)
Continuity of ownership and account context
Global
Specifically for teams who need enterprise-grade global compliance.
Contact sales
All the features of U.S., and:
Global VAT & GST calculations
Country-specific rate determination
Buyer location validation
Digital vs. physical product tax logic
Reverse-charge, marketplace, and refund handling
Local currency support
International threshold monitoring
Country-by-country registration thresholds
Expansion alerts before obligations trigger
Unified global liability view
Streamlined global registrations
Guided VAT / GST ID registration workflows
Tax ID tracking and management
Country-specific compliance requirements visibility
Unified international filing & reporting
Multi-country return preparation and submission
Normalized, return-ready transaction data
Central dashboard for deadlines, status, and audit trail
Cross-border tax expertise
VAT / GST specialists with international audit experience
Support for complex entity structures and supply chains
Defensible documentation and regulatory readiness
1,200+ finance and accounting teams have saved thousands of hours with Zamp.

Find the right plan for you.

Zamp is the operating system of sales tax for growing businesses. Our plans scale with your needs.

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Free
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U.S.
Contact sales
Global
Contact sales
Assess and diagnose
One-time nexus assessment
Product taxability assessment
Historical liability exposure analysis
Expert tax consultation
API sandbox environment
Tax calculation and determination
Rooftop-accurate rate calculation
Real-time address validation
Product-level taxability rules
Exemption & resale certificate logic
Reduced rates & tax holidays
VAT / GST rate calculation
Cross-border product classification
Reverse charge handling
Marketplace & platform rules
Refunds & credit note tax logic
Local currency tax support
Nexus and registrations
Ongoing nexus monitoring
80% early-warning alerts
Automated U.S. state registrations
State account setup & portal linking
International VAT / GST threshold monitoring
Country-specific registration requirements
VAT / GST registration & tax ID management
VAT ID validation & reverse-charge eligibility
Filing and remittance
Return preparation
AI-powered filing submission
Direct ACH remittance
Early-filing discount capture
Filing frequency management
Multi-country VAT / GST filings
Centralized global filing calendar
Audit, notices and risk management
Automated state notice monitoring
AI-assisted notice classification
Expert-led notice resolution
Audit support & representation
Centralized notice & audit archive
International audit support
Reporting, reconciliation and close
Liability reporting by jurisdiction
GL-ready reconciliation reports
Audit-ready transaction history
Multi-entity support
Multi-country reporting
Integrations and platform
ERP and accounting integration
sE-commerce and billing integrations
Real-time data sync
API access (production)
Multi-currency settlement support
Support and ownership
Access to tax professionals
Dedicated account manager
Former auditors
End-to-end compliance ownership
White-glove onboarding
Global tax specialist coverage

FAQs.

Still have questions? Call us at 1-866-438-9267 or email us at support@zamp.com.

Why don’t you list fixed prices by state or per filing?

Sales tax complexity varies widely by product mix, number of states, entities, and historical exposure. Flat per-state or per-filing pricing often hides risk and leads to add-ons later. Zamp scopes pricing based on your actual footprint and compliance needs so coverage is complete, predictable, and audit-ready from day one.

Why do the U.S. and Global plans require a conversation with sales?

Sales tax setups differ by business model, jurisdictions, entities, and prior history. A short assessment ensures the right coverage and configuration. In over 80% of companies, we uncover gaps or issues from prior providers that need to be addressed upfront.

Can I get started with Zamp before speaking to sales?

You can explore calculations and taxability in the API sandbox. Full platform access is configured around your products, entities, and integrations to ensure accuracy and audit-ready compliance.

Are plans one-size-fits-all, or tailored to each company?

Plans are designed by stage of growth, then scoped to your specific nexus, jurisdictions, entities, and systems so compliance scales cleanly and defensibly.

What happens if there’s an error or a deadline is missed?

Zamp owns the outcome. Under the Zamp Commitment, if a Zamp-managed calculation or filing results in penalties or interest, Zamp covers the cost. Accuracy, deadlines, and compliance risk are fully backed.

“Zamp’s pricing model allowed me to be confident in the cost I budgeted for sales tax across our portfolio of companies. There have been no surprises.”
 Matthew Rehurek
CFO of The Hedgehog Company