Tax Compliance Shopify Apps – Market Share Breakdown
(Updated September 2026) See which tax compliance Shopify apps dominate installs and how their share has shifted over time. This keyword page shows the full market share table, monthly share trends for the leaders, and a country-level breakdown so you can compare global vs regional dominance.
Tax Compliance Shopify Apps — Full Market Share Table
All tracked tax compliance Shopify apps ranked by current install share, with change vs 30 days ago and Leader / Climbing / Declining / Stable status — filterable by country and date range.
| # | App | Market Share | Change | Status |
|---|---|---|---|---|
| 1 |  Numeral Sales Tax | 67.03% | 10.56 | Climbing |
| 2 |  TnC: Terms and Conditions Box | 17.90% | 3.01 | Declining |
| 3 |  RA Term and Condition Checkbox | 7.24% | 2.29 | Declining |
| 4 |  Sidr ‑ Sales Tax Automation | 4.22% | 4.51 | Declining |
| 5 |  Invoice Hero | 2.51% | 0.98 | Climbing |
| 6 |  TaxCloud Sales Tax Automation | 0.31% | 0.16 | Declining |
| 7 |  Quaderno: Taxes & E‑Invoicing | 0.24% | 0.11 | Declining |
| 8 |  Terms and Conditions checkbox | 0.16% | 0.19 | Declining |
| 9 |  Sales Tax Automation by TaxRex | 0.13% | 0.11 | Declining |
| 10 |  Termzy ‑ I Agree To Terms | 0.08% | 1.11 | Declining |
Showing 1-10 out of 23
Key Insights:
- Numeral Sales Tax holds 67.0% share of tax compliance app installs — 49.1pp ahead of TnC: Terms and Conditions Box (17.9%).
- Top 3 apps (Numeral Sales Tax, TnC: Terms and Conditions Box, RA Term and Condition Checkbox) account for 92.2% of all tax compliance install share — a concentrated market.
- Numeral Sales Tax is gaining share fastest this month (+10.56pp) — the largest single gainer among the top tax compliance apps by share.
- Sidr ‑ Sales Tax Automation is losing share fastest (-4.51pp) — could indicate a churning user base or a stronger challenger gaining ground.
Tax Compliance Shopify Apps — Market Share Over Time
Monthly market share trajectory for the top 5 tax compliance Shopify apps over the past year — see who's gaining or losing install share month by month.
Charts Data
| App | Apr 2026 | May 2026 | Jun 2026 | Jul 2026 | Aug 2026 | Sep 2026 |
|---|---|---|---|---|---|---|
| Numeral Sales Tax | — | 46.0% | 55.7%9.66 | 71.6%15.89 | 71.8%0.26 | 78.0%6.16 |
| TnC: Terms and Conditions Box | — | 13.8% | 21.3%7.52 | 15.4%5.88 | 20.1%4.66 | 11.1%8.95 |
| RA Term and Condition Checkbox | — | 26.4% | 9.7%16.75 | 6.2%3.47 | 3.5%2.7 | 6.5%2.96 |
| Sidr ‑ Sales Tax Automation | — | 4.5% | 8.9%4.44 | 3.6%5.25 | 2.8%0.87 | 3.2%0.39 |
| Invoice Hero | — | 1.4% | 1.6%0.16 | 2.2%0.6 | 0.6%1.56 | 0.6%0.01 |
Key Insights:
- Numeral Sales Tax's share expanded from 46.0% → 78.0% over the charted period.
- Of the top 5 tracked tax compliance apps, 1 grew share and 4 lost share — leader is widening the gap.
Top Tax Compliance Shopify Apps by Country
Per-country market share rankings for tax compliance Shopify apps across 5 markets — see which apps lead in each country and where regional leaders diverge from the global leader.
| # | 🌎 Worldwide |  United States |  India |  China |  United Kingdom |
|---|---|---|---|---|---|
| 1 | | | | | |
| 2 | | |  |  | |
| 3 | | | | | |
| 4 | | | | | |
| 5 | | | | | |
Key Insights:
- Numeral Sales Tax leads tax compliance apps in 2 of 4 tracked markets (United States, China).
- Numeral Sales Tax leads worldwide, but 2 of 4 tracked markets crown a different leader — TnC: Terms and Conditions Box in India, TnC: Terms and Conditions Box in United Kingdom.
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Top 5 Apps in Tax Compliance
- Numeral Sales Tax — Leads tax compliance apps with 78.0% install share, rated 4.5★ — gaining share this month.
- Sidr ‑ Sales Tax Automation — Holds 3.2% of tax compliance app install share, rated 5.0★ — gaining share this month.
- RA Term and Condition Checkbox — Holds 6.5% of tax compliance app install share, rated 4.9★ — gaining share this month.
- TnC: Terms and Conditions Box — Holds 11.1% of tax compliance app install share, rated 4.9★ — losing share this month.
- Quaderno: Taxes & E‑Invoicing — Holds 0.1% of tax compliance app install share, rated 5.0★ — losing share this month.
Tax Compliance Shopify Apps — Frequently Asked Questions
1. Which tax compliance app has the highest market share on Shopify?
Numeral Sales Tax dominates the tax compliance category on Shopify with 67.0% of installs — 49.1pp ahead of TnC: Terms and Conditions Box. This is a clear leader by share, so most merchants default to it unless they have a niche-fit reason to pick differently.
2. How is market share calculated for tax compliance Shopify apps?
For tax compliance (a keyword page), market share is rank-weighted — apps at position #1 carry roughly 40× the weight of apps at position #22, and apps beyond #22 are excluded. Each app's weighted score is divided by the total weighted score across the keyword to give the share %. This reflects Shopify search behaviour: most installs come from the top of the results.
3. Which tax compliance apps are gaining market share on Shopify?
Numeral Sales Tax is gaining tax compliance app market share fastest this month, up +10.56pp versus 30 days ago. Switch the table sub-tab to "Market Share Changes" to see all gainers ordered by movement.
4. Which tax compliance apps are losing market share on Shopify?
Sidr ‑ Sales Tax Automation has lost the most market share this month among tax compliance apps (-4.51pp). Sort the table by Change (Low to High) to see the full list of decliners.
5. Which countries drive the most tax compliance Shopify app installs?
United States drives the largest share of tax compliance app installs at 86.5%, followed by Canada at 2.4% and Australia at 2.2%. Use the country picker on the third card to compare market leaders by country.
6. How many tax compliance apps does ShopDigest track on Shopify?
ShopDigest tracks 96 tax compliance apps on the Shopify App Store. Market share, rankings, and review data refresh weekly so you can track competitive shifts as they happen.
