Fully managed sales tax for technology companies—covering subscriptions, usage-based billing, digital products, and remote teams.
Thousands of businesses already switched to Zamp.
Subscriptions, global customers, evolving products, and remote teams create constant change. Sales tax needs to keep up—quietly and reliably.
Your products stay taxed correctly across jurisdictions—even as pricing models, delivery, and services evolve.
Explore sales tax calculation| Product | Type | State | Taxability |
|---|---|---|---|
| Pro plan$49 per seat | SaaS | TX | MappingTaxable |
| API creditsMetered | Usage | WA | MappingTaxable |
| AI seatsAdd-on | Digital | CA | MappingExempt in 2026 |
| OnboardingOne-time | Service | NY | MappingExempt |
Usage-based pricing, mid-cycle plan changes, prorations, credits, and refunds are handled correctly—so tax consistently matches your billing and revenue.
Explore Stripe integrationLine items
Product tax rules are continuously validated, with clear explanations for how and why tax is applied.
Explore the sales tax API
Why it’s taxedTexas treats this as data processing, so 20% of the charge is exempt.Mapped, rule explained.
Compliance is managed for you as you expand across states and countries—with visibility and control at every step.
Explore filing and remittanceDirect access to experienced tax professionals, including former state auditors, when scrutiny or complexity arises.
Explore the managed service
Your specialistZampOnlineBring your states and systems. A sales tax specialist will show you exactly what Zamp takes over.
Connect to leading ERP, billing, and e-commerce platforms — and support custom tech stacks via our API.
ShopifyOrders and refunds
NetSuiteInvoices
StripeSubscriptions
WooCommerceOrders
XeroInvoicesPeople all over the world are buying our product, so it’s good to have somebody who knows what they’re doing.
No, and that is where the complexity lies. SaaS is taxable in states like Tennessee and Vermont, but exempt in others like Michigan, while states like Colorado have specific home-rule jurisdiction variances. Zamp’s engine manages these rules automatically so you don’t have to track legislative changes.
Yes. In many states, having a single remote developer or sales rep creates “physical nexus,” obligating you to collect tax on sales in that state even if you haven’t hit the economic revenue threshold. Zamp monitors both physical and economic triggers to keep you compliant.
Many SaaS companies sell to non-profits or educational institutions that are tax-exempt. Zamp manages the collection and validation of exemption certificates directly, ensuring you don’t charge tax to exempt customers while maintaining the audit trail you need.
Absolutely. Our integrations with platforms like Stripe and Chargebee are designed to handle the dynamic nature of SaaS billing, including upgrades, downgrades, and metered usage, ensuring tax is calculated correctly on every invoice.
Yes. We regularly help SaaS companies identify historical exposure, clean up compliance gaps, and file back returns to get you current. Where VDAs are needed, we connect you with the right resources. Addressing this proactively is always cheaper than waiting for an audit.
Talk to a sales tax specialist about your states, your systems and what we take over.
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