Comply vs Sidr ‑ Sales Tax Automationfor Shopify (2026)
Comply and Sidr ‑ Sales Tax Automation are both Shopify apps in the Finances and Taxes categories, but they cater to entirely different markets and compliance requirements. Comply focuses exclusively on Spanish tax obligations, specifically Verifactu, TicketBAI (coming soon), and SII, automating the generation of compliant invoices and data submission to Hacienda. Sidr, on the other hand, is a US-based solution that automates US sales tax reporting and filing, handling nexus tracking, registration, and accurate tax reports. The key difference lies in their geographical focus and regulatory adherence. Comply is designed for Spanish merchants needing to comply with Spain's stringent fiscal regulations. Sidr addresses the complexities of US sales tax across different states, offering nexus tracking and automated filing services. User sentiment also differs significantly. Comply has no ratings or reviews, while Sidr boasts a perfect 5/5 rating with 52 reviews, indicating strong user satisfaction with Sidr's service in the US market.
At a Glance
Comply
0 reviews
Sidr ‑ Sales Tax Automation
52 reviews
Detailed Overview
Comply
Con Comply, tu punto de venta opera conforme a las obligaciones fiscales vigentes en España.
Key Features
- Facturas con QR y firma digital: Documentos válidos según normativa fiscal.
- Envío seguro de datos a Hacienda: Cumple con Verifactu y TicketBAI(próximamente)
- Gestión de errores: Detecta y corrige facturas rechazadas o envíos incompletos.
- Panel fiscal Shopify: Visualiza, filtra y exporta todas tus facturas facilmente.
Sidr ‑ Sales Tax Automation
Sidr Tax is a US-based fully managed US sales tax solution. Automate your sales tax returns.
Key Features
- Autofile: Fully automate your sales tax filing and always stay on schedule.
- Economic Nexus Dashboard: Know exactly when you need to start collecting taxes.
- Accurate Tax Reports: Sales tax calculations always up to date and export ready.
- Registration: Obtain sales tax permit for you at the right time.
- Chat Support: Have questions? Chat with us and we respond as soon as we can.
Feature Comparison
| Rating | 0/5 | 5/5 |
Rating Comply0/5 Sidr ‑ Sales Tax Automation5/5 | ||
| Reviews | 0 | 52 |
Reviews Comply0 Sidr ‑ Sales Tax Automation52 | ||
| Geographical Focus | Spain | United States |
Geographical Focus ComplySpain Sidr ‑ Sales Tax AutomationUnited States | ||
| Compliance Standard | Verifactu, TicketBAI (soon), SII | US Sales Tax |
Compliance Standard ComplyVerifactu, TicketBAI (soon), SII Sidr ‑ Sales Tax AutomationUS Sales Tax | ||
| Automation Scope | Invoice Generation, QR Codes, Digital Signatures, Data Submission | Reporting, Filing, Nexus Tracking, Registration |
Automation Scope ComplyInvoice Generation, QR Codes, Digital Signatures, Data Submission Sidr ‑ Sales Tax AutomationReporting, Filing, Nexus Tracking, Registration | ||
| Support | Resolution de Incidencias | Chat and Email Support |
Support ComplyResolution de Incidencias Sidr ‑ Sales Tax AutomationChat and Email Support | ||
| Target Merchant | Spanish merchants operating Shopify POS | US merchants needing sales tax automation |
Target Merchant ComplySpanish merchants operating Shopify POS Sidr ‑ Sales Tax AutomationUS merchants needing sales tax automation | ||
| Value Proposition | Automated Spanish tax compliance | Fully managed US sales tax solution |
Value Proposition ComplyAutomated Spanish tax compliance Sidr ‑ Sales Tax AutomationFully managed US sales tax solution | ||
Our Verdict
The choice between Comply and Sidr ‑ Sales Tax Automation is straightforward and depends entirely on the merchant's location and tax obligations. If a merchant operates in Spain and needs to comply with Spanish fiscal regulations like Verifactu and SII, Comply is the only option of the two. The lack of reviews is a risk that the merchant needs to consider and investigate further before installing the app.
Conversely, if a merchant operates in the United States and needs help with US sales tax reporting and filing, Sidr is the clearly superior choice, given its high rating and numerous positive reviews. Sidr's comprehensive features, including nexus tracking and automated filing, make it a valuable tool for US merchants. Without any user feedback to draw from, it is impossible to recommend Comply unless it is the only solution available for Spanish tax compliance in Shopify.
Common Questions
Which app is easier to use?
Based on the available information, it is difficult to determine which app is easier to use. Sidr's numerous positive reviews might indicate a smoother user experience, but Comply offers a control panel for managing invoices.
Which app is more reliable?
Sidr is likely more reliable given its positive reviews. The lack of reviews for Comply makes it difficult to assess its reliability.
Does Comply support US sales tax?
No, Comply is designed exclusively for Spanish tax compliance and does not support US sales tax.
Does Sidr support Spanish tax regulations?
No, Sidr is a US-based solution and does not support Spanish tax regulations like Verifactu and TicketBAI.
Which app is better for a merchant selling both in Spain and the US?
A merchant selling in both Spain and the US would need *both* apps (or alternatives). Comply would handle the Spanish tax obligations, and Sidr would manage the US sales tax requirements. These apps focus on completely different jurisdictions.
Get More From Your Shopify Store
Run audits for SEO, CRO, PageSpeed, and AI visibility. Get a clear report and actionable fixes.
Try Fix My Store