Side-by-side comparison · 24 data points
US State Sales Tax return Reports & Automated Filing for your store. Easy, Accurate & Time Saving!!!
| Tax Rex ‑ Sales Tax Automation | Zamp Tax | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed | ||
| Last updated | — | — |
| Metric | Tax Rex ‑ Sales Tax Automation | Zamp Tax |
|---|---|---|
| Rating | 5.0 ★ | — |
| Total reviews | 109 | 0 |
| Free plan | Yes | Yes |
| Pricing | Free trial available | Free |
| Built for Shopify | — | — |
| Pricing tiers | 4 tiers | — |
| Listed features | 5 | 5 |
| Languages | 1 supported | 1 supported |
| Listed since | Sep 2021 | Apr 2026 |
Based on the data on this page, Tax Rex ‑ Sales Tax Automation is the stronger choice for most Shopify App Store merchants — 5.0★ vs Zamp Tax's 0.0★ is a meaningful gap that usually reflects real product or support quality differences across the user base. Pricing entry tiers: Tax Rex ‑ Sales Tax Automation at Free trial available, Zamp Tax at Free. Check each app's tier structure for the capacity limits you actually need before deciding — the headline number is the same shape, but the gating shape per tier (apps, orders, integrations) varies. Tax Rex ‑ Sales Tax Automation has the larger user base (109 reviews vs 0), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Zamp Tax's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat. Recommended by store size: small/early-stage merchants who need fast install and low risk should default to Tax Rex ‑ Sales Tax Automation; mid-market and enterprise merchants with specific feature requirements should evaluate both — Zamp Tax's 0-review base may include the workflow context that matches your specific use case better than Tax Rex ‑ Sales Tax Automation's broader-but-shallower coverage. This verdict is generated from the live marketplace data on this page — rating, review count, pricing tier, and category position all refresh from the canonical Shopify App Store listing every 24 hours. AppRanks does not accept payment to influence comparison outcomes; the methodology is documented on the About page and applies identically to every pair on the site.
Read each app's audit: Tax Rex ‑ Sales Tax Automation audit • Zamp Tax audit
| Keyword | Tax Rex ‑ Sales Tax Automation | Zamp Tax |
|---|---|---|
| registration | #10 | Not ranked |
| customer service automation | #18 | Not ranked |
| customer support automation | #22 | Not ranked |
Both Tax Rex ‑ Sales Tax Automation and Zamp Tax offer paid plans only. Tax Rex ‑ Sales Tax Automation starts at Free trial available; Zamp Tax starts at Free. Compare the per-tier features in the Pricing section above before committing.
It depends on what you're optimizing for. Tax Rex ‑ Sales Tax Automation fits better if you prioritize rating consistency; Zamp Tax is the call if you need the larger user base. Read both apps' detail pages on AppRanks for the full feature breakdown, install counts, and recent listing changes.
Both apps are one-click installs from the Shopify App Store marketplace. Tax Rex ‑ Sales Tax Automation has more onboarding documentation maturity (109 reviews vs 0), which usually translates to better-tested setup wizards and quicker time-to-value. AppRanks doesn't measure setup time directly — read the recent reviews on each app's detail page for merchant-reported install experience.
Tax Rex ‑ Sales Tax Automation typically suits early-stage and growth-mode stores based on its review-base composition (109 reviews). Zamp Tax aligns more with early-stage and growth-mode stores (0 reviews). Larger review bases generally mean the app has been load-tested at scale — relevant if you're processing high order volume or handling enterprise compliance requirements.
Migration support varies by app and category. Tax Rex ‑ Sales Tax Automation and Zamp Tax both publish their export options on their marketplace listing pages (or in their support docs); some apps offer one-click import from competitors, others require CSV. The fastest check: search "import from Zamp Tax" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
