Side-by-side comparison · 24 data points
VAT ID validation & automatic tax exemption in Checkout. Boosting merchant efficiency and EU sales!
| OO ‑ EU Tax Exemption Checkout | Tax Rex ‑ Sales Tax Automation | |
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| Tagline | ||
| Description | ||
| Screenshots | images | images |
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| Last updated | — |
US State Sales Tax return Reports & Automated Filing for your store. Easy, Accurate & Time Saving!!!
| Metric | OO ‑ EU Tax Exemption Checkout | Tax Rex ‑ Sales Tax Automation |
|---|---|---|
| Rating | 5.0 ★ | 5.0 ★ |
| Total reviews | 2 | ★ 118 |
| Free plan | Yes | Yes |
| Pricing | Free trial available | Free trial available |
| Built for Shopify | — | — |
| Pricing tiers | 1 tier | ★ 4 tiers |
| Listed features | 5 | 5 |
| Languages | 1 supported | 1 supported |
| Listed since | Feb 2025 | Sep 2021 |
OO ‑ EU Tax Exemption Checkout and Tax Rex ‑ Sales Tax Automation are evenly matched on rating (5.0★ vs 5.0★) — the differentiator comes down to pricing fit, feature breadth, and which app's interaction pattern suits your team's workflow. Pricing entry tiers: OO ‑ EU Tax Exemption Checkout at Free trial available, Tax Rex ‑ Sales Tax Automation at Free trial available. 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 (118 reviews vs 2), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. OO ‑ EU Tax Exemption Checkout's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat. Recommended evaluation path: install both apps' free tiers (where available) and run them in parallel on a small cohort of orders for 7-14 days before committing. The data tables below show the per-feature breakdown — for most merchants the deciding factor will be a single integration or workflow detail that's hard to compare from listing pages alone. 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: OO ‑ EU Tax Exemption Checkout audit • Tax Rex ‑ Sales Tax Automation audit
| Keyword | OO ‑ EU Tax Exemption Checkout | Tax Rex ‑ Sales Tax Automation |
|---|---|---|
| sales tax | Not ranked | #4 |
| sales tax filing | Not ranked | #6 |
| tax filing | Not ranked | #18 |
Both OO ‑ EU Tax Exemption Checkout and Tax Rex ‑ Sales Tax Automation offer paid plans only. OO ‑ EU Tax Exemption Checkout starts at Free trial available; Tax Rex ‑ Sales Tax Automation starts at Free trial available. Compare the per-tier features in the Pricing section above before committing.
OO ‑ EU Tax Exemption Checkout (5.0★, 2 reviews) and Tax Rex ‑ Sales Tax Automation (5.0★, 118 reviews) are essentially tied on rating. Look at review velocity and individual reviewer quotes — both visible on each app's detail page — to differentiate.
It depends on what you're optimizing for. OO ‑ EU Tax Exemption Checkout fits better if you prioritize broader integrations; Tax Rex ‑ Sales Tax Automation 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 (118 reviews vs 2), 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.
OO ‑ EU Tax Exemption Checkout typically suits early-stage and growth-mode stores based on its review-base composition (2 reviews). Tax Rex ‑ Sales Tax Automation aligns more with early-stage and growth-mode stores (118 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. OO ‑ EU Tax Exemption Checkout and Tax Rex ‑ Sales Tax Automation 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 OO ‑ EU Tax Exemption Checkout" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
