Avalara vs Zamp
Avalara
Small, midsize and enterprise businesses, including manufacturers, retailers, software companies, hospitality and accounting firms
2004; Durham, North Carolina, US
Zamp
Growing small to mid-size digital businesses (e-commerce, SaaS, digital services), plus accounting firms serving clients on a referral or white-label basis
Founding year not published; Miami, Florida, US
Avalara and Zamp both handle US sales tax compliance, from calculation to filing and remittance.
Avalara, founded in 2004 in Durham, North Carolina, sells tax compliance software for sales tax, VAT, e-invoicing and duties to 41,000+ customers; Zamp, based in Miami, sells a managed service in which its tax specialists handle nexus tracking, registrations, filing and notices for 1,200+ finance and accounting teams.
Avalara vs Zamp: side by side
“Not published” means the vendor does not state it.
| Avalara | Zamp | |
|---|---|---|
| What it does | Tax compliance: sales and use tax calculation, returns filing and remittance, VAT, e-invoicing, exemption certificates, cross-border duties, business licences and property tax, with AI agents | Managed sales tax compliance: software plus tax specialists handling nexus tracking, registrations, rooftop-level calculation, filing, remittance and notices |
| Best for | Small, midsize and enterprise businesses, including manufacturers, retailers, software companies, hospitality and accounting firms | Growing small to mid-size digital businesses (e-commerce, SaaS, digital services), plus accounting firms serving clients on a referral or white-label basis |
| Founded and HQ | 2004; Durham, North Carolina, US | Founding year not published; Miami, Florida, US |
| Ownership and funding | Not published | Private; US$30m raised in total, latest round led by Acrew Capital with Thomson Reuters Ventures (announced Apr 2026) |
| Customers or users | 41,000+ customers; 6.6 million+ returns filed and 54 billion+ AvaTax API calls in 2025 | 1,200+ finance and accounting teams and over 120 accounting firms; named customers include Crumbl, Oats Overnight, David Protein, Cult Gaia, Tushy, Handwrytten; firms include Withum and Anchin |
| Pricing | Avalara Select sales tax plans for businesses under US$50m revenue: US$79 or US$69 per state a month (US$799 or US$699 a year); larger businesses quoted on volume | Free plan (nexus and exposure assessment, API sandbox); paid U.S. and U.S. + Canada plans scoped per customer, no list prices, no per-transaction fees |
| Deployment and markets | Customers in 75+ countries; VAT, GST, e-invoicing and duties across 190+ markets; offices in the US, Europe, India and Brazil | Cloud platform with managed service; US (50+ states and territories, 13,000+ jurisdictions) and Canada (GST/HST/PST/QST) |
Main differences
Zamp is a managed service, done for you or done with you, with tax specialists; Avalara sells software for sales tax, VAT, e-invoicing, exemption certificates, duties, licences and property tax.
Avalara covers VAT, GST, e-invoicing and duties across 190+ markets; Zamp covers the US, with 13,000+ jurisdictions, and Canada.
Avalara publishes Avalara Select plans from US$69 per state a month for businesses under US$50m revenue; Zamp has a free plan and scopes paid plans to each customer, with no per-transaction fees.
Avalara serves small, midsize and enterprise businesses across many industries; Zamp serves growing small and mid-size digital businesses and over 120 accounting firms.
Which to choose
Choose Avalara if
- You need VAT, e-invoicing or cross-border duties as well as US sales tax, or tax software across many entities and industries
Choose Zamp if
- You are a growing digital business that wants specialists to handle registrations, filings and notices for you
Compare further
Common questions
What is the difference between Avalara and Zamp?+
Avalara sells tax compliance software for sales and use tax calculation, returns filing and remittance, VAT, e-invoicing, exemption certificates, cross-border duties, business licences and property tax, with AI agents. Zamp is a managed sales tax service: software plus tax specialists handling nexus tracking, registrations, rooftop-level calculation, filing, remittance and notices.
How much do Avalara and Zamp cost?+
Avalara Select sales tax plans, for businesses under US$50m in revenue, cost US$79 or US$69 per state a month (US$799 or US$699 a year); larger businesses are quoted on volume. Zamp has a free plan for nexus and exposure assessment; its paid US and US-plus-Canada plans are scoped to each customer, with no per-transaction fees.
Which countries do Avalara and Zamp cover?+
Avalara has customers in 75+ countries and covers VAT, GST, e-invoicing and duties across 190+ markets. Zamp covers US sales tax in 50+ states and territories and 13,000+ jurisdictions, and Canadian GST, HST, PST and QST.
Part of Accountio’s accounting technology coverage.
